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The heterogeneous deformation of a polycrystalline aggregate under severe plastic deformation was reproduced with finite element analysis by using single-crystal plasticity to characterize the evolution process of the heterogeneity. Finite element analyses of a periodic polycrystalline aggregate were carried out to simulate the deformation process corresponding to the multi-pass equal-channel angular extrusion process, which reached over 250% of the macroscopic logarithmic accumulated plastic strain. The numerical results were analyzed from multi-scale perspectives: the macroscopic response, evolution of the crystallographic orientation, and deformation state of the microstructure. This study addressed the importance of finite element discretization to reproduce the heterogeneous deformat

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Keyword: crystal plasticity, severe plastic deformation, texture, finite element analysis

Date published: 2016-06-23

Publisher: Japan Institute of Metals

Journal:

• MATERIALS TRANSACTIONS (ISSN: 13459678) vol. 57 issue. 9 p. 1404-1410

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Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.2320/matertrans.MH201514

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Updated at: 2024-01-05 22:11:48 +0900

Published on MDR: 2023-02-28 12:01:35 +0900