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Hole expansion of twinning-induced plasticity steel

Title
Hole expansion of twinning-induced plasticity steel
Authors
Xu, LuBarlat, FLee, MG
POSTECH Authors
Barlat, F
Date Issued
Jun-2012
Publisher
TMS
Abstract
Fracture in the hole expansion test for a high-Mn twinning-induced plasticity (TWIP) steel sheet sample was investigated. The test results showed that cracking always occurred along the rolling direction (RD). The fracture behavior of the material was rationalized in terms of strain-rate sensitivity, yield surface shape and damage-producing MnS stringers aligned along the RD. In addition, according to the macroscopic constitutive modeling results, work hardening was shown to be almost isotropic for this material. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
Keywords
TWIP steel; Hole expansion; Constitutive modeling; Fracture; Shear; ANISOTROPIC YIELD FUNCTIONS; SHEET
URI
http://oasis.postech.ac.kr/handle/2014.oak/16391
ISSN
1359-6462
Article Type
Article
Citation
SCRIPTA MATERIALIA, vol. 66, no. 12, page. 1012 - 1017, 2012-06
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BARLAT FREDERIC GERARDBARLAT, FREDERIC GERARD
Ferrous & Energy materials Technology
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