Revisit the role of deformation twins on the work-hardening behaviour of twinning-induced plasticity steels
Revisit the role of deformation twins on the work-hardening behaviour of twinning-induced plasticity steels
复制标题
重新审视变形孪晶对孪生塑性钢加工硬化行为的作用
DOI：
10.1016/j.scriptamat.2017.08.017
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发表时间：
2018-01-01
影响因子：
6
通讯作者：
Huang, M. X.
中科院分区：
文献类型：
--
作者：
Luo, Z. C.;Huang, M. X.
本研究发现，在373 K和473 K下变形的孪生诱导塑性（TSTK）钢的加工硬化率和位错密度与在298 K下变形的相当，但在373和473 K下变形孪晶被相当程度地禁止。动态应变时效（DSA）引起的高位错密度是导致T373钢在373和473 K下高加工硬化率的主要机制。结果表明，T400钢在不形成形变孪晶的情况下也能获得较高的加工硬化率。(C)2017 Acta Materialia Inc.由爱思唯尔有限公司出版。保留所有权利。
The present study found that the work-hardening rate and dislocation density in a twinning-induced plasticity (TWIP) steel deformed at 373 K and 473 K are comparable to that deformed at 298 K, but deformation twins are considerably prohibited at 373 and 473 K. High dislocation density induced by dynamic strain aging (DSA) is the dominant mechanism responsible for the high work -hardening rate of TWIP steels at 373 and 473 K. It indicates that TWIP steels can also achieve high working-hardening rate without the formation of deformation twins. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.