Annealing strengthening in a dilute Mg-Zn-Ca sheet alloy
Annealing strengthening in a dilute Mg-Zn-Ca sheet alloy
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DOI：
10.1016/j.scriptamat.2015.06.002
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发表时间：
2015-10-01
影响因子：
6
通讯作者：
Nie, J. F.
中科院分区：
文献类型：
--
作者：
Zeng, Z. R.;Zhu, Y. M.;Nie, J. F.
低合金镁薄板合金，Mg-0.3Zn-0.1Ca（at.%），在加热过程中不表现出任何硬化响应。然而，在80-200摄氏度下的退火处理，在拉伸中的一些塑性应变之后，导致显著的强化而不是软化效果。通过电子背散射衍射和扫描透射电镜分析，发现强化效应是由于GP区对滑移基底位错的钉扎作用以及溶质原子向位错的偏聚所致。(C)2015 Acta Materialia Inc.由爱思唯尔有限公司出版。保留所有权利。
Magnesium sheet alloy of dilute composition, Mg-0.3Zn-0.1Ca (at.%), does not exhibit any hardening response during heating. However, an annealing treatment at 80-200 degrees C, after some plastic strain in tension, leads to a remarkable strengthening, rather than softening, effect. By using electron backscattered diffraction and scanning transmission electron microscopy, it is found that the strengthening effect is caused by the pinning of gliding basal dislocations by GP zones and possibly solute atoms segregated to the dislocations. (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.