Effect of twinning and dynamic recrystallization on the high strain rate rolling process
Effect of twinning and dynamic recrystallization on the high strain rate rolling process
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DOI：
10.1016/j.scriptamat.2010.07.029
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发表时间：
2010-11-01
影响因子：
6
通讯作者：
Tian, J.
中科院分区：
文献类型：
--
作者：
Zhu, S. Q.;Yan, H. G.;Tian, J.
采用高应变速率轧制（HSRR）技术成功制备出具有优异力学性能的超细晶ZK60镁合金板材。HSRR的实现是由于优先启动孪晶和随后的动态再结晶（DRX），以抑制竞争裂纹的启动。随着应变速率的提高，组织的均匀性得到改善。高强度和高延展性是由细化晶粒和DRX引起的低位错和孪晶密度共同作用的结果。(C) 2010材料学报Elsevier Ltd.出版。版权所有。
High strain rate rolling (HSRR) was successfully used to produce ultrafine-grained ZK60 magnesium alloy sheets with superior mechanical properties. The achievement of HSRR is attributed to the preferred initiation of twinning and the subsequent dynamic recrystallization (DRX) to inhibit competitive crack initiation. The microstructural homogeneity is improved as the strain rate rises. High strength and ductility of the HSRRed sheet result from the effects of the refined grains and the low dislocation and twinning densities caused by DRX. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.