Effect of Sn and Y addition on the microstructural evolution and mechanical properties of hot-extruded Mg-9Li-3Al alloy

被引：24

作者：

Guo, J. ^{[1
,2
]}

Chang, L. L. ^{[1
,2
]}

Zhao, Y. R. ^{[1
,2
]}

Jin, Y. P. ^{[1
,2
]}

机构：

[1] Shandong Univ, Sch Mat Sci & Engn, Jinan 250061, Shandong, Peoples R China

[2] Shandong Univ, Minist Educ, Key Lab Liquid Solid Struct Evolut & Proc Mat, Jinan 250061, Shandong, Peoples R China

来源：

MATERIALS CHARACTERIZATION | 2019年 / 148卷

基金：

中国国家自然科学基金;

关键词：

Mg-Li-Al alloys; Microstructure; Hot-extrusion; Strengthening; MG-LI ALLOYS; AS-CAST; TEXTURE EVOLUTION; HEAT-TREATMENT; PHASE; BEHAVIOR; DEFORMATION; STRENGTH;

D O I：

10.1016/j.matchar.2018.11.030

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Mg-9Li-3Al (wt%) alloys with addition of Sn and Y were prepared by vacuum melting followed by hot-extrusion process. Microstructure evolution of Mg-9Li-3Al alloys with Sn and Y addition was characterized by using optical microscopy, scanning electrical microscopy, transmission electrical microscopy, X-ray diffraction and mechanical properties were examined by tensile test. MgLi2Sn and MgLi2Al particles are observed in Mg-9Li-3Al-2Sn alloys and significant strength improvement is obtained due to precipitation hardening. The ultimate tensile strength (UTS) of Mg-9Li-3Al-2Sn is 251 MPa, which is the highest among all the studied Mg-9Li-3Al alloys, while the highest elongation (43.8%) at room temperature is obtained in Mg-9Li-3Al-2Y.

引用

页码：35 / 42

页数：8

共 39 条

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