{"title":"On the Rolling Texture Reversal in Fcc Metals","authors":"W. Truszkowski","doi":"10.1155/TSM.1.141","DOIUrl":"https://doi.org/10.1155/TSM.1.141","url":null,"abstract":"As all factors governing the process of the development of texture are strongly dependent on stacking fault energy, a marked influence ofSFE on the wire texture and rolling texture characteristics should be expected. This relationship has been established for wires by English and Chin. Using their own experimental data, as well as those from literature, they plotted the amount of (100) wire texture component against v/Gb, being SFE, G the shear modulus, and b the Burgers vector, as shown in Figure 1. The most important conclusion drawn by the authors from this relationship is that the general trend toward larger proportions of (100) with reduced SFE is reversed for the lowest values of v/Gb. At the same time they come to the con","PeriodicalId":413822,"journal":{"name":"Texture, Stress, and Microstructure","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121099261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"On The Ideal Orientations of Rolling Textures for FCC Polycrystals","authors":"Y. Zhou, K. Neale, L. Toth","doi":"10.1155/TSM.14-18.1055","DOIUrl":"https://doi.org/10.1155/TSM.14-18.1055","url":null,"abstract":"The textures that develop during rolling are among the most important \u0000factors affecting the properties of rolled sheets, as well as their behaviour in subsequent \u0000forming processes. For FCC polycrystals, the main ideal orientations of \u0000rolling textures are cube, Goss, brass, copper, Taylor and S. The behaviour of \u0000these ideal orientations during rolling are investigated in this paper. Analytical \u0000and numerical results for the stress states, slip distributions, lattice rotation fields \u0000and orientation developments are obtained using a rate-sensitive crystal plasticity \u0000model. The rate-sensitive results are compared with those obtained from the classical \u0000rate-independent Bishop and Hill theory. Comparisons are also made with \u0000the experimental observations reported by Hirsch and Lucke.","PeriodicalId":413822,"journal":{"name":"Texture, Stress, and Microstructure","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121106378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Modelling of Texture Development and Deformation Mechanisms in a Ti20V Alloy Using a Self Consistent Polycrystal Approach","authors":"S. Mercier, L. Toth, A. Molinari","doi":"10.1155/TSM.25.45","DOIUrl":"https://doi.org/10.1155/TSM.25.45","url":null,"abstract":"Modellisations of the deformation texture development in a Ti20V alloy (20 volumic % Vanadium) during rolling have been carried out using the viscoplastic self consistent model of Molinari and Toth (1994). The model parameters and the slip and twinning systems were identified from experimental data. The experimental texture evolution is well reproduced with only a small contribution of the twinning activity.","PeriodicalId":413822,"journal":{"name":"Texture, Stress, and Microstructure","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116543087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A Sixth Order Inverse PotentialFunction for Incorporation ofCrystallographic Texture IntoPredictions of Properties ofAluminium Sheet","authors":"J. Savoie, S. Macewen","doi":"10.1155/TSM.26-27.495","DOIUrl":"https://doi.org/10.1155/TSM.26-27.495","url":null,"abstract":"In order to simulate adequately the formability of sheet, it is necessary to generate a yield criterion \u0000that takes into account the anisotropy of the crystallographic texture. This yield function must be in \u0000a form that can be used easily in finite element analysis. In addition, the formulation should allow the \u0000possibility to update the yield surface during simulation to take into account the texture evolution. This \u0000work investigates the use of a sixth-order strain rate potential that, when differentiated with respect \u0000to the strain rate, gives the components of stress. A method is given to solve the non-convexity problems \u0000that can arise when the proposed analytical sixth-order function is used. Examples are given for one \u0000cold rolled and one annealed aluminium sheet.","PeriodicalId":413822,"journal":{"name":"Texture, Stress, and Microstructure","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131409106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"THE DETERMINATION OF ORIENTATION DISTRIBUTION FUNCTION FROM INCOMPLETE POLE FIGURES AN EXAMPLE OF A COMPUTER PROGRAM","authors":"J. Jura, J. Pośpiech","doi":"10.1155/TSM.3.1","DOIUrl":"https://doi.org/10.1155/TSM.3.1","url":null,"abstract":"The use of incomplete pole figure data for \u0000defining the orientation distribution function (ODF) in \u0000a polycrystalline material is of great practical importance, \u0000because it enables the use of experimental data \u0000from a simplified measurement. The present paper provides \u0000the source text of a computer program for calculating \u0000the coefficients of ODF series expansion, Clμυ. The data for computations are in the incomplete pole figures of rhombic symmetry as determined by the \u0000back reflection or transmission technique for crystalline \u0000solids of the cubic system. Also described is the \u0000numerical method of determining the coefficients Clμυ, \u0000and the results so obtained are discussed.","PeriodicalId":413822,"journal":{"name":"Texture, Stress, and Microstructure","volume":"191 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131448891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Texture Evolution During the Biaxial Stretching of FCC SheetMetals","authors":"Y. Zhou, K. Neale","doi":"10.1155/TSM.22.87","DOIUrl":"https://doi.org/10.1155/TSM.22.87","url":null,"abstract":"Using a rate-sensitive crystal plasticity model together with the full constraint Taylor theory, the \u0000formation of textures during biaxial stretching of FCC sheet metals is investigated in detail. Three-dimensional \u0000lattice rotation fields, orientation evolution and polycrystalline texture development are \u0000simulated for the entire range of biaxial strain ratio. The investigation discloses the paths of orientation \u0000development and respective stable end orientations, as well as the relation between the evolution paths \u0000and the biaxial strain ratio. Our results show that the formation of textures depends mainly on the \u0000behaviour of the α- and βρ fibres in biaxial stretching. The strain ratio affects the composition of the βρ-fibre, as well as the flow direction and velocity of orientations towards and along α and βρ, and thus results in different biaxial-stretching textures. The predictions of FCC biaxial-stretching textures are compared with experimental observations reported in literature. Finally, we discuss the influence of complex strain paths on texture formation.","PeriodicalId":413822,"journal":{"name":"Texture, Stress, and Microstructure","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131491957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Prediction of Plastic Properties of Polycrystalline Aggregates of BCC Metals Deforming by Pencil Glide","authors":"P. R. Morris, S. Semiatin","doi":"10.1155/TSM.3.113","DOIUrl":"https://doi.org/10.1155/TSM.3.113","url":null,"abstract":"The Bishop and Hill-type isostrain analysis for the deformation of BCC crystals by pencil glide has been re-examined. Expressions have been derived for slip-plane orientations and shears for simultaneous slip along four directions. The expressions for shears, in conjunction with expressions for the stress states previously calculated by Piehler and Backofen, permit comparison of external and internal work, which must be equal for the active stress state. Additional relations are introduced which must be satisfied for simultaneous operation of three slip systems. These relations permit a straightforward computational procedure for determining possible stress states, and insure that external and internal work are equal. If for a possible stress state involving activation of three slip directions, the shear stress on the supposedly inactive system is less than the yield stress, that stress state is active.","PeriodicalId":413822,"journal":{"name":"Texture, Stress, and Microstructure","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127577541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A TEST OF THE REFINEMENT PROCEDURE FOR DETERMINING THE CRYSTALLITE ORIENTATION DISTRIBUTION: POLYETHYLENE TEREPHTHALATE","authors":"W. R. Krigbaum, A. Vasek","doi":"10.1155/TSM.1.9","DOIUrl":"https://doi.org/10.1155/TSM.1.9","url":null,"abstract":"A test of the refinement procedure for improving the crystallite orientation distribution function is presented for a \u0000fiber texture sample of polyethylene terephthalate. This is a particularly difficult example because the triclinic unit \u0000cell offers no simplification due to symmetry, and the pole figures are sharply peaked. The analysis employed 17 \u0000observed pole figures and an additional 29 unobserved pole figures reconstructed from the crystallite orientation \u0000distribution function. After three cycles of refinement, in which the maximum value of the coefficient was increased \u0000from 6 to 16, the standard deviations, σq and σw, of the plane-normal and crystallite orientation distributions were \u0000reduced by about a factor of 3. The refined crystallite orientation distribution function indicates that the c-axis \u0000tends to align along the fiber axis for this polyethylene terephthalate sample.","PeriodicalId":413822,"journal":{"name":"Texture, Stress, and Microstructure","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127612096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Modified Maximum Entropy Method (MMEM) in QTA for Lower Symmetry Polycrystalline Aggregates","authors":"Y. D. Wang, J. Z. Xu, Z. Liang","doi":"10.1155/TSM.26-27.103","DOIUrl":"https://doi.org/10.1155/TSM.26-27.103","url":null,"abstract":"A new algorithm of quantitative texture analysis (QTA), which is called the modified maximum entropy method (MMEM), has been proposed and applied to determination of textures in polycrystalline samples of lower crystal symmetry with overlapping diffraction peaks (Wang and Xu, 1995a). By introducing directly the maximum entropy principle into the least square procedure of pole figure inversion (Bunge, 1969), then both minimizing the differences between experimental and postulated pole figure data, and maximizing entropy may be satisfied simultaneously. Thus, the maximum entropy principle is applied to the entire process of QTA in frame of the harmonic method (HM). The detailed comparisons among the three pole figure inversion methods, i.e. the traditional HM, the primary maximum entropy method (MEM) and the MMEM, are given through a model example of simulated fiber texture. It is shown that the precise and stable solution of inverse pole figure for the polycrystalline samples with smooth or sharp textures will be obtained by the MMEM even using a less number of pole figures. The minimum range of polar angle and the least number of pole figures, which are needed in the QTA for pretended tetragonal materials by the MMEM, are discussed in detail.","PeriodicalId":413822,"journal":{"name":"Texture, Stress, and Microstructure","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127633633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"On Orientation Changes Accompanying Slip and Twinning","authors":"W. Hosford","doi":"10.1155/TSM.2.175","DOIUrl":"https://doi.org/10.1155/TSM.2.175","url":null,"abstract":"The purpose of this note is to make a few observations on several analyses of lattice \u0000rotation by slip and by twinning in deformation.","PeriodicalId":413822,"journal":{"name":"Texture, Stress, and Microstructure","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133244377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}