Superplastic behavior of extruded Mg–9RY–4Zn alloy containing long period stacking ordered phase

Superplastic behavior of extruded Mg–9RY–4Zn alloy containing long period stacking ordered phase
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DOI：
10.1016/j.msea.2013.04.005
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发表时间：
2013-08
期刊：
Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
影响因子：
6.4
通讯作者：
Zhe Leng;Jinghuai Zhang;Lin Huayi;P. Fei;Li Zhang;Shujuan Liu;Milin Zhang;R. Wu
Zhe Leng;Jinghuai Zhang;Lin Huayi;P. Fei;Li Zhang;Shujuan Liu;Milin Zhang;R. Wu
中科院分区：
材料科学1区
文献类型：
--
作者：
Zhe Leng;Jinghuai Zhang;Lin Huayi;P. Fei;Li Zhang;Shujuan Liu;Milin Zhang;R. Wu

文献摘要

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在长周期堆垛有序相强化Mg-9 RY-4 Zn合金中观察到超塑性现象。最大延伸率达到720%。主要的超塑性机制是晶格扩散控制的晶界滑动（GBS）。合金通过腔聚结失效。讨论了LPSO相在超塑性变形中的独特作用。
Superplastic phenomenon is observed in a long period stacking ordered (LPSO) phase strengthened Mg–9RY–4Zn alloy. The maximum elongation of 720% is achieved. The predominant superplastic mechanism is lattice-diffusion-controlled grain boundary sliding (GBS). The alloy fails through cavity coalescence. The unique role of LPSO phase in superplastic deformation is discussed.