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

J Mater Sci Technol ›› 2011, Vol. 27 ›› Issue (8): 753-758.

• Regular Papers • Previous Articles Next Articles

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

Guiying Sha, Xiaoguang Sun, Teng Liu, Yuhong Zhu, Tao Yu

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) Department of Mechanical Engineering, Wayne State University, Detroit, MI 48202, USA

Received:2010-11-11 Revised:2010-12-15 Online:2011-08-30 Published:2011-08-30
Contact: Guiying Sha
Supported by:
the National Natural Science Foundation of China (Grant No. 50801048) and the Aero Science Foundation of China (Grant No. 2007ZF54016)

Abstract

Abstract: 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°C 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-1Sc alloy also reduces obviously.

Key words: Mg-Li-Sc alloy, Annealing, Microstructure, Mechanical properties

Guiying Sha, Xiaoguang Sun, Teng Liu, Yuhong Zhu, Tao Yu. Effects of Sc Addition and Annealing Treatment on the Microstructure and Mechanical Properties of the As-rolled Mg-3Li alloy[J]. J Mater Sci Technol, 2011, 27(8): 753-758.

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

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