High-strength Mg93.96Zn2Y4Sr0.04 alloy with long-period stacking ordered structure

被引：28

作者：

Zhang, Jinshan ^{[1
]}

Chen, Changjiu ^{[1
]}

Cheng, Weili ^{[1
]}

Bian, Liping ^{[1
]}

Wang, Hongxia ^{[1
]}

Xu, Chunxiang ^{[1
]}

机构：

[1] Taiyuan Univ Technol, Coll Mat Sci & Engn, Taiyuan 030024, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2013年 / 559卷

基金：

中国国家自然科学基金;

关键词：

Maguesium alloy; Long-period stacking ordered (LPSO) structure; Equal channel angular pressing (ECAP); Dislocation pile-up; MECHANICAL-PROPERTIES; MAGNESIUM ALLOY; ZN; MICROSTRUCTURE; PHASE;

D O I：

10.1016/j.msea.2012.08.120

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The deformation behavior and microstructure evolution of a high-strength Mg93.96Zn2Y4Sr0.04 (at%) alloy with long-period stacking ordered (LPSO) structure subjected to equal channel angular pressing (ECAP) were systematically investigated. The results showed that, after equal channel angular pressing, the alloy exhibited excellent mechanical properties with ultimate tensile strength of 408 and 375 MPa at ambient and elevated temperatures, respectively. Such excellent mechanical properties could be attributed to the long-period stacking ordered structure, dislocation pile-up in the bent LPSO structure and appearance of subboundaries induced by dislocation tangles in the X-phase. These findings are expected to provide the in-depth insights into methods for optimizing the mechanical properties of magnesium alloys with LPSO structure. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：416 / 420

页数：5

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