Texture, Stress, and MicrostructureThis is an RSS file. You can use it to subscribe to this data in your favourite RSS reader, such as GoogleReader, or to display this data on your own website or blog. Subscribe to this data using MyMedWorm.Subscribe to this data using GoogleReader.Subscribe to this data using Bloglines.Subscribe to this data using MyYahoo.

Get the very latest Swine Flu news via the MedWorm Swine Flu RSS news feed - updated hourly from thousands of authoritative health and news sources.

• Contents
• Discussions

Pages: 1  2  3  4  

Statistical Analysis of Misorientation Distributions From Growth Selection Experiments in Iron–3% SiEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The frequency of occurrence of differently misoriented grain boundaries in growth selection experiments in silicon–iron was reported by Ibe and Lücke and has been the basis of many texture models. However, this pattern of behaviour bears much similarity to misorientation frequencies calculated from random textures. A comparison of the experimental and computed frequency distribution shows that there are statistically significant differences and therefore that some possibilities for growth selection do exist (Source: Texture, Stress, and Microstructure)
Source: Texture, Stress, and Microstructure - November 3, 2009 Category: Materials Science Source Type: journals

Microstructure and Texture of in Situ Heavily Drawn Cu–Nb CompositesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Heavily cold drawn in situ Cu–Nb composites have been investigated by transmission electron microscopy (TEM) and X-ray analysis. Dislocation density in the copper matrix has been shown to change only slightly in the investigated drawing ratio range because of the development of stage IV of deformation. In Nb filaments dislocation density in the investigated range at first increases with deformation and then drops at the highest drawing ratio. At intermediate deformation niobium grains consist of fine blocks separated by low-angle dislocation boundaries. At drawing, fibre texture develops in both phases, with 〈...
Source: Texture, Stress, and Microstructure - November 3, 2009 Category: Materials Science Source Type: journals

Influence of Rolling Temperature on the Perfection Degree of Recrystallization Cube Texture in NickelEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The effect of the rolling temperature on the deformation texture and the perfection degree of a cube texture in pure-nickel thin tape were investigated. The kinetics of primary recrystallization was studied on samples that had undergone rolling at different temperatures and the temperature of the onset of secondary recrystallization was determined. Regularities of the structure formation in the samples are discussed. It is established that the cube texture with the maximum sharpness is produced in the samples rolled at room temperature. (Source: Texture, Stress, and Microstructure)
Source: Texture, Stress, and Microstructure - November 3, 2009 Category: Materials Science Source Type: journals

Effect of Zonal Isolation on the Kinetics of Sintering a Particulate BodyEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
This paper describes the so-called meso-scale simulations of sintering a particulate body. Computations were made using 3D structure-imitation computer model of evolution of a powder compact during sintering. It was demonstrated, that in powder bodies the effect of zonal isolation (forming separate groups of particles during sintering) determines features of shrinkage and internal structure of a compact. In case of the diffusion- viscous flow of particles the fact was proved that the zonal isolation is predetermined by ratio of viscosity and free surface energy. It was verified, that there is a critical value of the above ...
Source: Texture, Stress, and Microstructure - November 3, 2009 Category: Materials Science Source Type: journals

Quantification of Minor Texture Components by Hard X-RaysEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Non-destructive methods to determine the volume fraction of minor texture components with very low reflection intensities are presented. The methods are based on polycrystalline diffraction of hard X-rays from synchrotron sources. By focusing the X-rays and scanning the specimen, it is shown that volume fractions as low as 10-9 can be registered, provided that the crystallographic orientations of such volume elements are far away from any major texture component. Simultaneously, the spatial resolving power is of the order 0.03 μm3. The relevance of such methods for nucleation studies and trace analysis is outlined. (...
Source: Texture, Stress, and Microstructure - November 3, 2009 Category: Materials Science Source Type: journals

Recrystallization in a Hot Deformed Al-Mg-Si Alloy: The Effect of Fine PrecipitatesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The recrystallization of an Al-Mg-Si alloy deformed by plane strain compression at 400°C and 1 s-1 has been studied. Fine particles are found to have a significant influence on the development of recrystallization textures. Annealing at 400°C, in the presence of Al-Fe-Si particles located on boundaries, results in a weak recrystallization texture. There is a clear indication that grain nucleation is associated with abnormal subgrain growth. The occurrence of this recovery process is analyzed by taking into account the particle pinning pressure and the orientation dependence of boundary energy and mobility. The cu...
Source: Texture, Stress, and Microstructure - November 3, 2009 Category: Materials Science Source Type: journals

Microtexture Studies of PST and PZT Ceramics and PZT Thin Film by Electron Backscatter Diffraction PatternsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Crystallographic orientations of twelve different lead scandium tantalate (PST) ceramics, two lead zirconate titanate ceramics (PZT) and one PZT thin film were investigated by the technique of electron backscatter diffraction (EBSD) in the scanning electron microscope. The PST ceramics were processed under different conditions of temperature and annealing. Crystal orientations in the bulk ceramics were examined and the results were plotted in microtexture pole- and inverse pole-figures. Local texture and misorientation between adjacent grains in certain selected regions of the ceramics were also examined. To compare the re...
Source: Texture, Stress, and Microstructure - November 3, 2009 Category: Materials Science Source Type: journals

On The Peculiarities of X-Ray Determination of Crystallographic Texture in Samples After Testing Wear ResistanceEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
A peculiar relief generally appears on the sample surface while testing wear resistance, which impairs the results of texture analysis by X-ray diffraction methods. The main reason for this is screening influence of the surface roughness on the X-ray passing through. From model representations, the influence on the screening of the relief parameters and the characteristic angle of reflection of X-rays is shown. Distribution of the parameters of a relief that actually forms is analyzed. A computer-assisted method of calculation of pole figures that excludes the screening effect is suggested. As an example of the method of a...
Source: Texture, Stress, and Microstructure - November 3, 2009 Category: Materials Science Source Type: journals

Effective Elastic Properties of Textured Cubic PolycrystalsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
A general scheme for the solution of problem of averaging elastic properties of textured polycrystals is suggested which is based on the algebraic methods of description of elastic properties. (Source: Texture, Stress, and Microstructure)
Source: Texture, Stress, and Microstructure - November 3, 2009 Category: Materials Science Source Type: journals

Pole Figure Inversion Using Finite Elements Over Rodrigues SpaceEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Using finite elements over Rodrigues space, methods are developed for the formation and inversion of pole figures. The methods take advantage of the properties of Rodrigues space, particularly the fact that geodesics corresponding to pole figure projection paths are straight lines. Both discrete and continuous pole figure data may be inverted to obtain orientation distribution functions (ODFs) in Rodrigues space, and we include sample applications for both types of data. (Source: Texture, Stress, and Microstructure)
Source: Texture, Stress, and Microstructure - November 3, 2009 Category: Materials Science Source Type: journals

PrefaceEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
(Source: Texture, Stress, and Microstructure)
Source: Texture, Stress, and Microstructure - November 3, 2009 Category: Materials Science Source Type: journals

Depth Resolved Strain and Phase Mapping of Dissimilar Friction Stir Welds Using High Energy Synchrotron RadiationEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The strain and phase distribution in a dissimilar friction stir weld of AA6082-T6 to AA2024-T3 is investigated non-destructively. The measurements are performed using a novel depth resolved strain and phase mapping technique. The technique is based on the use of a focussed high energy synchrotron beam, a novel spiral slit system, and an area detector system. Through thickness measurements of the residual strain along the weld centre show strong variations with changes of sign. The strain scans across the weld exhibit a strong asymmetry in particular for the longitudinal strain component. A depth resolved strain mapping acr...
Source: Texture, Stress, and Microstructure - November 3, 2009 Category: Materials Science Source Type: journals

Tensile Deformation Induced Texture Transformation in Austenitic Stainless SteelEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Texture patterns of the starting ώ and transformed α structural phases were obtained from AISI 304 stainless steel sheets subjected to varying levels of tensile deformation using high energy X-ray diffraction in combination with the texture enhanced Rietveld method. The use of this method allows the simultaneous determination of the orientation distribution functions (ODF) of both phases, even for small α-martensite fractions of the order of 5%. The texture patterns are analyzed in terms of the crystallographic orientation relation between the starting and transformed phases and the preferential form...
Source: Texture, Stress, and Microstructure - November 3, 2009 Category: Materials Science Source Type: journals

Torsion Texture Measurements With High-Energy Synchrotron Radiation on NiAlEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Diffraction with high-energy synchrotron radiation is a new experimental method to determine textures of materials, which due to the special properties of this radiation, in the future may have advantages in terms of accuracy of local texture measurements in comparison to established methods like Electron back scatter diffraction (EBSD). In the present study NiAl polycrystals with two different initial textures have been deformed in torsion at 727°C and 1000°C and their texture development has been measured with highenergy synchrotron radiation. Torsion enables the study of texture formation with strain as well a...
Source: Texture, Stress, and Microstructure - November 3, 2009 Category: Materials Science Source Type: journals

Full Stress Tensor Determination in A textured Aerospace Aluminium Alloy Plate Using synchrotron X-Ray DiffractionEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Triaxial strain scanning has been performed on a 7mm thick 7150-aluminium alloy Variable Polarity Plasma Arc (VPPA) weld using synchrotron X-rays. It has been demonstrated that the use of specific advantageous (hkl) peaks that occur in this highly textured aerospace alloy plate permits fast deep measurements in reflection as well as in transmission. The sin⁡2ψ method was also utilised to monitor the variation in deviatoric stress component (σ11−σ33) across the weld in both the test-piece and a comb like reference specimen used to map the changes in stress-free lattice spacings over the we...
Source: Texture, Stress, and Microstructure - November 3, 2009 Category: Materials Science Source Type: journals

Use of Synchrotron Diffraction Data for Describing Crystal Structure and Crystallographic Phase Analysis of R-Phase NiTi Shape Memory AlloyEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The objective of the present article is to use the third generation synchrotron X-ray source at the European Synchrotron Research Facility (ESRF) in Grenoble, which make available X-ray beams of higher energy and much higher intensity than laboratory X-ray sources, for describing crystal structure of the R-phase in 50.75 at.% Ti–47.75 at.% Ni–1.50 at.% Fe ternary alloy. The synchrotron diffraction data of R-phase were analyzed using the Rietveld refinement with GSH description. The results showed that no significant improvement in fit is found when the inversion center is removed from the P3¯ mode...
Source: Texture, Stress, and Microstructure - November 3, 2009 Category: Materials Science Source Type: journals

Influence of Grain Number on Graphite Quantitative Texture StudyEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The present work is devoted to the study of the grain number influence on the quantitative texture analysis and on the values of averaged elastic properties. Number of grains does not influence mathematical definition of orientation distribution function (ODF) (Bunge, H.J. (1982). Texture Analysis in Material Science. Butterworths, London; Matthies, S., Vinel, G.W. and Helming, K. (1987). Standard Distributions in Texture Analysis. Akademie-Verlag, Berlin.); nevertheless, intuitively clear that, averaging procedure implies a ‘‘large’’ number of grains to make sense. In the present work we applied the already sugges...
Source: Texture, Stress, and Microstructure - November 3, 2009 Category: Materials Science Source Type: journals

Applications on High-Energy X-Rays to Stress Measurements of Thermal Barrier CoatingsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
High-energy X-rays from a synchrotron radiation source, SPring-8, were applied to the stress measurements of thermal barrier coating (TBC). The specimen had a zirconia top coat on a bond coat of NiCoCrAlY sprayed on the substrate of Ni-base super alloys. The stress in the bond coat was measured through the top coat using the diffraction of Ni3Al 311 by high-energy X-rays with an energy of 72 keV. The sin2ψ method was used to determine the stress value. A specially designed furnace with a wide beryllium window was developed to conduct in-situ measurements of the internal stress in the bond coating at the room tempera...
Source: Texture, Stress, and Microstructure - November 3, 2009 Category: Materials Science Source Type: journals

High-Energy X-Rays: A tool for Advanced Bulk Investigations in Materials Science and PhysicsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The combination of these techniques is a strong issue for the construction and development of future instruments. (Source: Texture, Stress, and Microstructure)
Source: Texture, Stress, and Microstructure - November 3, 2009 Category: Materials Science Source Type: journals

High-Resolution Imaging of Texture and Microstructure by the Moving Detector MethodEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
In order to describe texture and microstructure of a polycrystalline material completely, crystal orientation g={ϕ1Φϕ2} must be known in all points x={x1 x2 x3} of the material. This can be achieved by locationresolved diffraction of high-energy, i.e. short-wave, X-rays from synchrotron sources. Highest resolution in the orientation- as well as the location-coordinates can be achieved by three variants of a detector “sweeping” technique in which an area detector is continuously moved during exposure. This technique results in two-dimensionally continuous images which are sec...
Source: Texture, Stress, and Microstructure - November 3, 2009 Category: Materials Science Source Type: journals

Hot-Extruded and Cold-Rolled Textures of the Matrix Aluminum in Deformation Processed Two-Phase Nb/Al Metal-Metal CompositesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
In this article, the powder metallurgy technique combined with flat hot-extrusion and cold rolling processes was employed to fabricate 10 and 20vol.%Nb/Al metal–metal composite sheets. The hot-extruded and coldrolled textures of the matrix aluminum in these metal–metal composite sheets were investigated by three dimensional orientation distribution functions (ODFs) analysis. The results show that the extrusion mode and large second phase particulate metal, Nb, have strong influence on the development of the extrusion and cold rolling textures in composites’ matrix. The matrix Al forms β-fiber textures afte...
Source: Texture, Stress, and Microstructure - November 3, 2009 Category: Materials Science Source Type: journals

Intensity Correction in Texture Measurement of Polycrystalline Thin Films by X-Ray DiffractionEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The tilting of a specimen may not only result in defocusing effect, but also in a change of irradiated volume during texture measurement for thin films and coatings by using X-ray diffraction. The influence on diffraction intensity has to be considered in order to obtain an accurate result of texture analysis. The effect of irradiated volume can be formulated as a function of the thickness and the linear absorption of a studied film material, the tilt angle of the specimen and the Bragg angle of diffraction, and then eliminated. In view of that the preparation of a randomly oriented specimen would be difficult, a simple an...
Source: Texture, Stress, and Microstructure - November 3, 2009 Category: Materials Science Source Type: journals

Effect of Gravity on the Kinetics of Consolidation of Powder BodiesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Physical mathematical model of sintering powders is suggested with respect to the influence of gravitation on sintering kinetics. Structure genesis and evolution in sintered glass-based particulate bodies is investigated both in computer simulations and “in situ”. (Source: Texture, Stress, and Microstructure)
Source: Texture, Stress, and Microstructure - November 3, 2009 Category: Materials Science Source Type: journals

Using Individual Spectra Simulation for the Study of Pole Figures ErrorsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Crystallographic texture is described by pole figures. In this paper, we continue to study experimental pole figure errors. In other words it can be named pole figure measurement errors. These errors are connected with the experimental procedure and do not depend on any further computations. In our previous works it was shown that the qualitative behaviour of pole figure measurement errors is similar to peak width determination errors. To check this conclusion a set of diffraction spectra were measured for Mg + 4.5%Al + 1%Zn sample on the spectrometer for quantitative texture analysis (SKAT) at FLNP, JINR, Dubna. T...
Source: Texture, Stress, and Microstructure - July 8, 2009 Category: Materials Science Source Type: journals

The Texture of a Slate From Nantlle, Caernarvon, North WalesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
A specimen of Cambrian slate from the slate belt in North Wales has been thinned by the ion bombardment technique to produce an ultrathin section with the specimen plane normal to the cleavage plane. This specimen has been investigated with the electron microscope by electron transmission. Selected area diffraction patterns allow identification of individual sheet silicate grains. The pole figures of the basal planes of two sheet silicate minerals, muscovite and chlorite, have been measured with an X-ray pole-figure goniometer and both show an elongated maximum normal to the slaty cleavage, with orthorhombic symmetry. Whil...
Source: Texture, Stress, and Microstructure - June 30, 2009 Category: Materials Science Source Type: journals

The Spherical Sample Method in Neutron Diffraction Texture DeterminationEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Neutron diffraction proves advantageous as compared to X-ray diffraction in texture analysis because of the lower absorption coefficient for a broad variety of materials especially metals. The spherical sample method is recommended because it yields the most reliable results and it does not require great preparational efforts. The fundamental difference between the spherical sample method in X-ray and in neutron diffraction is discussed. (Source: Texture, Stress, and Microstructure)
Source: Texture, Stress, and Microstructure - June 30, 2009 Category: Materials Science Source Type: journals

Texture of MetalsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
A condensed review of casting, deformation, and annealing textures of polycrystalline metals and alloys is presented. It is intended to provide an informative but simplified reference for researchers, engineers, and students who are seeking quick information on the development of textures in various metal objects, and for those who are primarily interested in the textures of non-metallic materials, but wish to acquire a general background knowledge on the texture formation in metals. (Source: Texture, Stress, and Microstructure)
Source: Texture, Stress, and Microstructure - June 30, 2009 Category: Materials Science Source Type: journals

Texture Control and the Yield Anisotropy of Plane Strain Magnesium ExtrusionsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The textures developed in magnesium, annealed after both hot and cold extrusion under essentially plane strain conditions, have been qualitatively accounted for in terms of the operative deformation modes. It is found that the main features of both textures are explained by the operation of {101¯2} and {101¯1} twinning together with basal slip, but there is an important component of the hot extrusion annealing texture not found in the cold extrusions texture which can only be explained by the action of {101¯0} or {101¯1} slip. (Source: Texture, Stress, and Microstructure)
Source: Texture, Stress, and Microstructure - June 30, 2009 Category: Materials Science Source Type: journals

X-Ray Analysis of a Quartz Fabric From the Sambagawa Crystalline Schist, JapanEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
An X-ray fabric analysis of quartz grains from the Sambagawa crystalline schist, Japan, whose c-axis fabric (optically measured) was regarded as corresponding to an ultimate steady-state pattern of preferred orientation of c-axes developed by the approximately non-rotational two-dimensional strain under the Sambagawa metamorphicconditions, has been made by a texture goniometer for reflection. It has been clarified that [0001] and [101¯] directions are preferably oriented in the plane of the longest and shortest principal axes of the strain ellipsoid of mean strain of the system concerned and at the angles of ca. 35...
Source: Texture, Stress, and Microstructure - June 30, 2009 Category: Materials Science Source Type: journals

Anisotropy in Some Soft Magnetic MaterialsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Orientation distribution data are presented for low carbon steel and silicon iron after different rolling and annealing schedules. Magnetic properties which depend solely on orientation can be well described using such distributions. A general analysis is demonstrated by which other properties may be divided into two components which are respectively dependent and independent of orientation. An example of this, a.c. power loss, is considered in detail. It is shown that the orientation-dependence of power loss derives entirely from the hysteresis component. The classical eddy current loss together with an ‘anomalous&...
Source: Texture, Stress, and Microstructure - June 30, 2009 Category: Materials Science Source Type: journals

The Development of Rolling Textures in Low-Carbon SteelsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The crystallite orientation distribution analysis was applied to the study of the development of the rolling textures in low-carbon steels. It was found that the constraining effect of the grain boundary remarkably influences the rolling textures of polycrystalline iron. This enhances the crystal rotations, which would not be expected to occur in single crystals; and grains having the {110}〈112〉 orientations are forced to rotate about the 〈111〉axes lying in the sheet normal direction toward the {110}〈110〉 orientations. This is the origin of the 〈111〉 fiber textur...
Source: Texture, Stress, and Microstructure - June 30, 2009 Category: Materials Science Source Type: journals

Topographic Arrangement of Crystallite Orientations in Rolled CopperEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
In single and polycrystalline copper rolled to a reduction of 95 %, the topographic arrangements of crystallite orientations were determined over large areas by means of electron microscopy. Correlated data on orientation, diffraction site, and transmission pictures in three cross-sections perpendicular to the normal, rolling and transverse directions were obtained and evaluated. These results were complemented by X-ray studies of the texture. The rolled polycrystalline structure consists of roughly disc-shaped regions of uniform orientation which are fairly strongly misoriented with respect to each other. The planes ...
Source: Texture, Stress, and Microstructure - June 30, 2009 Category: Materials Science Source Type: journals

A System of FORTRAN for Three-Dimensional Texture AnalysisEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
A system of FORTRAN programmes is being described which allows most of the standard problems of three-dimensional texture analysis to be easily carried out. It requires about 25 K memory space and it may easily be enlarged by incorporating further subroutines. (Source: Texture, Stress, and Microstructure)
Source: Texture, Stress, and Microstructure - June 30, 2009 Category: Materials Science Source Type: journals

Texture Development in Ferritic Stainless Steel SheetEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Two grades of ferritic stainless steels (495 and 410.types) containing about 13 % chromium have been processed by cold rolling with intermediate and final anneals. The development of textures has been followed and the plastic anisotropy of the annealed sheet has been assessed. Processing conditions for the development of anisotropy favourable for deep drawing applications have been defined for the 405 type stainless steel. The evolution of the favourable {554} 〈225〉 texture component appears to be progressive throughout the processing. It is particularly well-developed after two moderate cold rolling re...
Source: Texture, Stress, and Microstructure - June 30, 2009 Category: Materials Science Source Type: journals

The Development of the Rolling Texture of Iron Determined by Neutron-DiffractionEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The development of the rolling texture of a low carbon steel was investigated by neutron diffraction calculating three-dimensional orientation distribution functions. The textures consist of two limited fibre axis components A and B centered about (1¯1¯1)[1¯21]+5∘ and (001)[1¯10] respectively with an angle of rotation of about 70∘. For rolling degrees larger than 50% the intensity of the fibre axis component A is being modulated so as to favour the orientation (1¯1¯2)[1¯10]. The texture may be considered as inverse to the low concentration brass texture i...
Source: Texture, Stress, and Microstructure - June 30, 2009 Category: Materials Science Source Type: journals

Oriented Nucleation in Low-Carbon SteelsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The preferred orientations in hot-rolled, cold-rolled (70 % reduction), and annealed low-carbon steels (capped and aluminium-killed grades) have been investigated. Particular attention has been paid to the factors that control texture formation during annealing. (Source: Texture, Stress, and Microstructure)
Source: Texture, Stress, and Microstructure - June 30, 2009 Category: Materials Science Source Type: journals

Automatic Drawing of Stereographic NetsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The present paper describes a computer program for the automatic tracing of new stereographic nets aimed at the description of pole figures. (Source: Texture, Stress, and Microstructure)
Source: Texture, Stress, and Microstructure - June 30, 2009 Category: Materials Science Source Type: journals

Earing in Deep-Drawing SteelsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The variations of the fourth-order coefficients of the crystallite orientation distribution function, with rolling reduction have been determined after cold-rolling and annealing for a deep-drawing quality rimming steel and an aluminium-killed steel. These coefficients influence drawability and earing behaviour and by the manipulation of the coefficients in the distribution function of a 60% cold-rolled and annealed rimming steel, a hypothetical non-earing sheet texture has been derived. By comparison with the actual sheet texture those textural components which most affect earing behaviour are identified. (Source: Te...
Source: Texture, Stress, and Microstructure - June 30, 2009 Category: Materials Science Source Type: journals

Cyclic Textures in Aluminium WiresEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Three-dimensional orientation distribution functions were calculated from neutron diffraction pole figures of unwound cylinders taken at different distances from the centre of cold drawn Al-wires. Their features change from the axially symmetric type at the very centre of the wire towards a texture near to the rolling type at the surface. Relations between the three-dimensional function and ordinary fibre texture pole figures were used to study the dependence of the textures on certain processing variables for cold drawn as well as recrystallized wires. (Source: Texture, Stress, and Microstructure)
Source: Texture, Stress, and Microstructure - June 30, 2009 Category: Materials Science Source Type: journals

Comments on the Determination of Wire TexturesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
(Source: Texture, Stress, and Microstructure)
Source: Texture, Stress, and Microstructure - June 30, 2009 Category: Materials Science Source Type: journals

Description of Orientation Distributions of Cubic Crystals by Means of 3-D Rotation CoordinatesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
A method has been described to represent orientations and orientation distributions of cubic crystals by means of a 3-dimensional orientation space which is formed by the repeatedly discussed rotation coordinates (axis and angle of rotation). Special emphasis has been given to the problem of multi-valency of the representation due to the cubic symmetry, to the description of scattering around an ideal orientation and to the numerical evaluation of these orientation coordinates by means of rotation matrices. (Source: Texture, Stress, and Microstructure)
Source: Texture, Stress, and Microstructure - June 30, 2009 Category: Materials Science Source Type: journals

A Test of the Refinement Procedure for Determining the Crystallite Orientation Distribution: Polyethylene TerephthalateEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
A test of the refinement procedure for improving the crystallite orientation distribution function is presented for a fiber texture sample of polyethylene terephthalate. This is a particularly difficult example because the triclinic unit cell offers no simplification due to symmetry, and the pole figures are sharply peaked. The analysis employed 17 observed pole figures and an additional 29 unobserved pole figures reconstructed from the crystallite orientation distribution function. After three cycles of refinement, in which the maximum value of the coefficient was increased from 6 to 16, the standard deviations, σq...
Source: Texture, Stress, and Microstructure - June 30, 2009 Category: Materials Science Source Type: journals

The Nucleation of Recrystallisation and the Development of Textures in Heavily Compressed Iron-Carbon AlloysEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Quantitative studies of textures developed in compressed iron–0.02%C and iron–0.14%C alloys before and after annealing have allowed theoretical predictions based on homogeneous plasticity theory to be assessed. It is concluded that qualitatively the theory is very good but predicts rates of texture development rather higher than those observed. The prediction of the theory that orientations on a line joining [110] and [411] should have a tendency to split into two components on deformation and form transition bands, which may be important in nucleating recrystallisation, has been confirmed by the re...
Source: Texture, Stress, and Microstructure - June 30, 2009 Category: Materials Science Source Type: journals

Authors' Reply to Comments on the Determination of Wire TexturesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
(Source: Texture, Stress, and Microstructure)
Source: Texture, Stress, and Microstructure - June 30, 2009 Category: Materials Science Source Type: journals

Using Individual Spectra Simulation for the Study of Pole Figures ErrorsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Crystallographic texture is described by pole figures. In this paper, we continue to study experimental pole figure errors. In other words it can be named pole figure measurement errors. These errors are connected with the experimental procedure and do not depend on any further computations. In our previous works it was shown that the qualitative behaviour of pole figure measurement errors is similar to peak width determination errors. To check this conclusion a set of diffraction spectra were measured for Mg + 4.5%Al + 1%Zn sample on the spectrometer for quantitative texture analysis (SKAT) at FLNP, JINR, Dubna. T...
Source: Texture, Stress, and Microstructure - June 25, 2009 Category: Materials Science Source Type: journals

Texture and Grain Size Control During Annealing of an Al-SiC Composite MaterialEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The effects of different heat treatments on the recrystallized texture and grain size of 90% cold rolled aluminium reinforced by 2vol% SiC whiskers have been studied. Annealing temperatures in the range 250-510°C and 3 heating rates (25, 80, 400°C/min) were used. The recrystallization textures were determined by neutron diffraction and the grain sizes were measured by optical microscopy. It was found that the recrystallization textures are rotated cube textures ({100} <013 >) and the strength depends strongly on annealing temperature, (T) and heating rat...
Source: Texture, Stress, and Microstructure - June 10, 2009 Category: Materials Science Source Type: journals

Defocusing in the Reflexion Technique for the Determination of Preferred Orientation Using EDXRDEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The defocusing effect in the reflexion technique for the determination of the preferred orientation using energy-dispersive x-ray diffraction (EDXRD) method is studied experimentally. The measurements show that the defocusing effect is dependent on the Bragg angle, the receiving slit width, the reflexion hkl and the metallurgical condition of the specimen. The defocusing correction or at least the optimizing of the measuring geometry is found to be necessary in quantitative texture measurements. (Source: Texture, Stress, and Microstructure)
Source: Texture, Stress, and Microstructure - June 10, 2009 Category: Materials Science Source Type: journals

Quantitative Determination of Preferred Orientation by Energy-Dispersive X-Ray DiffractionEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The use of energy-dispersive X-ray diffraction for quantitative determination of preferred orientations in polycrystalline specimens is analysed. The method is applied to determinations of rolling texture and fibre texture. The adaptability of the method to in situ studies is demonstrated by observations of texture changes simultaneous with the deformation of a specimen in a tension test. (Source: Texture, Stress, and Microstructure)
Source: Texture, Stress, and Microstructure - June 10, 2009 Category: Materials Science Source Type: journals

Effect of Crystal Rotation on Earing in Cup Drawing of Highly Textured MaterialsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
In this paper, a numerical model taking into account of crystal rotation is presented to predict earing in cup drawing. The model is based on the Continuum Mechanics of Textured Polycrystals and the assumption of plane strain. Ear profiles have been predicted for some common crystallographic orientations in face-centered cubic metals and highly textured sheets. It was shown that the major trends of the predicted profiles for both the single crystals and highly textured sheets were consistent with experimental results. The effect of crystal rotation on earing was shown to be insignificant for the predicted ear profiles. How...
Source: Texture, Stress, and Microstructure - June 10, 2009 Category: Materials Science Source Type: journals

Texture Investigations by Neutron Time-of-Flight DiffractionEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
For the majority of isotopes the thermal neutron absorption cross section is two or more orders lower than that for X-rays. This makes neutron diffraction well-suited for bulk texture investigations. Some characteristics of neutron diffraction are discussed. The principles of neutron time-of-flight diffraction are described. The pole figure determination by means of TOF technique is considered. The main parameters of the present Dubna texture facility are given. Further developments of the experimental technique are considered. The application of the TOF technique for inverse pole figure measurement is discussed as an appr...
Source: Texture, Stress, and Microstructure - June 10, 2009 Category: Materials Science Source Type: journals