Texture gradient simulations for extrusion and reversible rolling of FCC metals |
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| Institution: | 1. Department of Materials Science and Engineering, Sharif University of Technology, P.O. Box 11365-9466, Azadi Avenue, 14588 Tehran, Iran;2. Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, ON, Canada;3. Institute for Nanoscience and Nanotechnology, Sharif University of Technology, P.O. Box 11365-9466, Azadi Avenue, 14588 Tehran, Iran;1. Graduate School of Engineering, Hokkaido University, Sapporo, 060-8628, Japan;2. Institute of Materials Research, Tohoku University, Sendai, 980-8577, Japan;3. National Institute for Fusion Science, Gifu, 509-5202, Japan;1. Department of Materials Engineering, Isfahan University of Technology, Isfahan, 4156–83111, Iran;2. Department of Materials Science and Engineering, Shahrood University of Technology, Shahrood, 3619995161, Iran;1. Department of Inorganic Chemistry, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia;2. Department of Physical Chemistry, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia;3. Department of Chemistry, University of SS Cyril and Methodius in Trnava, J. Herdu 2, 917 01 Trnava, Slovakia;1. Department of Crop and Soil Sciences, Washington State University, Pullman, WA, 99164, USA;2. USDA-ARS Western Wheat Quality Laboratory, E-202 Food Quality Building, Washington State University, Pullman, WA, 99164-6394, USA;3. USDA-ARS Wheat Health, Genetics, and Quality Research Unit, Pullman, WA, 99164, USA |
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| Abstract: | A texture simulation method is described for some complex plane strain deformation paths during hot shaping of FCC metals. The method employs both finite element calculations and a polycrystal plasticity model based on the Relaxed-Constraints (RC) Taylor hypothesis and a viscoplastic constitutive law. We have considered the {111}<110> slip systems and the {100}, {110}, {112} <110> non-octahedral slip systems. The finite element codes simulate the strain paths of material flow during a shaping process. The local velocity gradients, expressed in the macroscopic reference coordinates, are rewritten in the local flow line coordinates using a kinematic analysis for steady-state flow. Secondly, for the different deformation paths, the RC polycrystal plasticity model is used to numerically simulate the local deformation texture evolutions as a function of depth. Texture simulations are carried out for two deformation processes combining hot compression and shear: extrusion and reversible rolling. For extrusion, the simulated pole figures and ODFs show the typical texture variations through the thickness of an extruded 6082 aluminium alloys, i.e. (β-fibre in the centre and a TD rotated copper component near the surface. It is shown that hot reversible rolling should develop a strong pure shear texture {001}<110> near the surface. |
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