Effects of Sc Addition and Annealing Treatment on the Microstructure and Mechanical Properties of the As-rolled Mg-3Li alloy

材料科学技术（英）, 2011, 27(8): 753-758.

Effects of Sc Addition and Annealing Treatment on the Microstructure and Mechanical Properties of the As-rolled Mg-3Li alloy

^1, , ^2, , ^3, , ^4, , ^5,

1.School of Materials Science and Engineering, Shenyang Aerospace University, Shenyang 110136, China

2.School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China

3.School of Materials Science and Engineering, Shenyang Aerospace University, Shenyang 110136, China／Department of Mechanical Engineering, Wayne State University, Detroit, MI 48202, USA

4.School of Materials Science and Engineering, Shenyang Aerospace University, Shenyang 110136, China

5.School of Materials Science and Engineering, Shenyang Aerospace University, Shenyang 110136, China

基金项目: This work is financially supported by the National Natural Science Foundation of China(50801048) the Aero Science Foundation of China(2007ZF54016)

关键词：镁合金 , 退火处理 , ISC , 力学性能 , 冷轧 , 再结晶温度 , 治疗 , 加法

Effects of Sc Addition and Annealing Treatment on the Microstructure and Mechanical Properties of the As-rolled Mg-3Li alloy

Keywords： Mg-Li-Sc alloy , Annealing , Microstructure , Mechanical properties ,

The microstructures and mechanical properties of the as-rolled Mg-3Li and Mg-3Li-1Sc （wt%） alloys before and after annealing treatment have been investigated. Results show that the grains are refined evidently and the recrystallization temperature is improved for more than 100℃by adding 1 wt% Sc into the Mg-3Li alloy. After complete recrystallization, both the strength and ductility of the Mg-3Li alloy are improved evidently with the addition of minor Sc. The brittle fracture tendency of Mg-3Li-ISc alloy also reduces obviously.

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