Development of High-Performance Mg Alloy via Introducing Profuse Long Period Stacking Ordered Phase and Stacking Faults

被引：18

作者：

Jiao, Yufeng ^{[1
,2
]}

Zhang, Jinghuai ^{[1
]}

Jing, Yongbin ^{[3
]}

Xu, Chi ^{[1
]}

Liu, Shujuan ^{[4
]}

Zhang, Li ^{[1
]}

Xu, Longjiang ^{[1
]}

Zhang, Milin ^{[1
]}

Wu, Ruizhi ^{[1
]}

机构：

[1] Harbin Engn Univ, Coll Mat Sci & Chem Engn, Key Lab Superlight Mat & Surface Technol, Minist Educ, Harbin 150001, Peoples R China

[2] Jiamusi Univ, Coll Mat Sci & Engn, Jiamusi 154007, Peoples R China

[3] Harbin Med Univ, Dept Orthoped, Affiliated Hosp 2, Harbin 150001, Peoples R China

[4] Harbin Inst Technol, Dept Mat Phys & Chem, Harbin 150001, Peoples R China

来源：

ADVANCED ENGINEERING MATERIALS | 2015年 / 17卷 / 06期

基金：

中国国家自然科学基金; 黑龙江省自然科学基金;

关键词：

ZN-ZR ALLOY; MECHANICAL-PROPERTIES; HIGH-STRENGTH; MAGNESIUM ALLOYS; MICROSTRUCTURE; EXTRUSION; PRECIPITATION; TEMPERATURE; RESISTANCE;

D O I：

10.1002/adem.201400369

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Due to low density and other features, magnesium (Mg) alloys are becoming one of key engineering structural materials for aerospace and automotive industries. In the meantime, conventional Mg alloys are limited because of their low mechanical properties, especially at high temperatures. In this study, a new Mg-12Ymm-4Zn (Ymm=Y-rich misch metal, wt%) extruded alloy was prepared by water-cooled mold casting and hot extrusion, and its ultimate tensile strength (UTS) and tensile yield strength (TYS) could reach 314 and 231MPa at 300 degrees C, which were slightly lower than those at room temperature (338 and 278MPa). To date, there is rare report on such high strength for Mg alloys at 300 degrees C, and it has been confirmed that introducing a large volume fraction of long-period stacking ordered (LPSO) phase in combination with nano-spaced stacking faults (SFs) is an effective pathway to develop deformed Mg alloys with high strength at elevated temperatures.

引用

页码：876 / 884

页数：9

共 42 条

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