Effect of Cu/Zn on microstructure and mechanical properties of extruded Mg-Sn alloys

被引：14

作者：

Pan, Hucheng ^{[1
]}

Fu, He ^{[1
]}

Ren, Yuping ^{[1
]}

Huang, Qiuyan ^{[2
]}

Gao, Zhengyuan ^{[2
]}

She, Jia ^{[2
]}

Qin, Gaowu ^{[1
]}

Yang, Qingshan ^{[3
]}

Song, Bo ^{[4
]}

Pan, Fusheng ^{[2
,3
]}

机构：

[1] Northeastern Univ, Key Lab Anisotropy & Texture Mat, Minist Educ, Shenyang 110819, Peoples R China

[2] Chongqing Univ, Natl Engn Res Ctr Magnesium Alloys, Chongqing 400044, Peoples R China

[3] Chongqing Acad Sci & Technol, Chongqing 401123, Peoples R China

[4] Southwest Univ, Fac Mat & Energy, Chongqing 400715, Peoples R China

来源：

MATERIALS SCIENCE AND TECHNOLOGY | 2016年 / 32卷 / 12期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Magnesium alloys; Alloying; Indirect extrusion; Mechanical properties; HIGH-STRENGTH; GRAIN-SIZE; TENSILE PROPERTIES; MN ADDITION; BEHAVIOR; TEXTURE; CA; CE; EVOLUTION; DUCTILITY;

D O I：

10.1080/02670836.2015.1115604

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, the effect of Cu and Zn addition on mechanical properties of indirectly extruded Mg-2Sn alloy was investigated. Mg-2Sn-0.5Cu alloy exhibits a moderate yield strength (YS) of 225 MPa and an ultimate strength of 260 MPa, which are much higher than those of the binary Mg-2Sn alloy, and the elongation (EL) evolves as similar to 15.5%. Mechanical properties of the Mg-2Sn-0.5Cu alloy are deteriorated with more 3 wt-% Zn addition, and YS and EL are reduced as 160 MPa and similar to 10%. The detailed mechanism is discussed according to the work-hardening rate and strengthening effect related to the grain sizes, second phases and macro-textures. Grain refinement and proper texture are believed to play a critical role in both strength and ductility optimisation.

引用

页码：1240 / 1248

页数：9

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