Mechanical properties and microstructure of AZ31 Mg alloy processed by two-step equal channel angular extrusion
Mechanical properties and microstructure of AZ31 Mg alloy processed by two-step equal channel angular extrusion
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DOI：
10.1016/j.matlet.2004.09.061
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发表时间：
2005-08
影响因子：
3
通讯作者：
Li Jin;D. Lin;D. Mao;Xiaoqin Zeng;W. Ding
中科院分区：
文献类型：
--
作者：
Li Jin;D. Lin;D. Mao;Xiaoqin Zeng;W. Ding
采用一种新的等通道转角挤压（ECAE）工艺--两步ECAE工艺，对AZ 31镁合金的组织和性能进行了控制。结果表明，该合金在453 K下进行第二步ECAE时，晶粒细化，动态回复和再结晶不完全，获得了0.5 μm的超细晶粒，塑性和屈服应力均显著提高。
A new equal channel angular extrusion (ECAE) processing, two-step ECAE, was applied to control the microstructure and mechanical properties of AZ31 Mg alloy. The ultra-fine grain size of 0.5 μm has been produced, and both the ductility and yield stress of the alloy were significantly increased after the processing, which is ascribed to grain refinement as well as incomplete dynamic recovery and recrystallization during the second-step ECAE at 453 K.