电磁搅拌对Mg-8Li-3Al合金显微组织和力学性能的影响

马蕾娟; 郝海; 姚磊; 谷松伟; 董汉伟; 张兴国

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电磁搅拌对Mg-8Li-3Al合金显微组织和力学性能的影响
Effects of Electromagnetic Stirring on Microstructure and Mechanical Properties of Mg-8Li-3Al Alloy
2009年29卷第12期页码：1144-1147
纸质出版日期： 2009 ，
DOI：

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[1]马蕾娟,郝海,姚磊,谷松伟,董汉伟,张兴国.电磁搅拌对Mg-8Li-3Al合金显微组织和力学性能的影响[J].特种铸造及有色合金,2009,29(12):1144-1147+1076.

Ma Leijuan, Hao Hai, Yao Lei, et al. Effects of Electromagnetic Stirring on Microstructure and Mechanical Properties of Mg-8Li-3Al Alloy[J]. Special Casting & Nonferrous Alloys, 2009,29(12):1144-1147.
[1]马蕾娟,郝海,姚磊,谷松伟,董汉伟,张兴国.电磁搅拌对Mg-8Li-3Al合金显微组织和力学性能的影响[J].特种铸造及有色合金,2009,29(12):1144-1147+1076. DOI：

Ma Leijuan, Hao Hai, Yao Lei, et al. Effects of Electromagnetic Stirring on Microstructure and Mechanical Properties of Mg-8Li-3Al Alloy[J]. Special Casting & Nonferrous Alloys, 2009,29(12):1144-1147. DOI：

摘要

研究了不同强度的电磁搅拌对Mg-8Li-3Al合金显微组织和力学性能的影响。结果表明

电磁搅拌能改善凝固过程的传热传质

细化枝晶

提高合金的抗拉强度、伸长率和硬度。当施加的电磁场电压为100V时

Mg-8Li-3Al合金的显微组织细小均匀

室温抗拉强度、伸长率和硬度（HB）分别达到212.9MPa、10.5%和71.3

合金的组织和力学性能达到最佳。

Abstract

Effects of electromagnetic stirring on microstructure and mechanical properties of Mg-8Li-3Al alloy were investigated.The results show that tensile strength

elongation and hardness of the alloy are obviously improved by electromagnetic stirring as a result of refining dendrite through improving heat transfer and mass transfer during solidification.With 100V electromagnetic voltage

ambient tensile strength

elongation and hardness of the Mg-8Li-3Al alloy with uniformly fine structure reach 212.9MPa

10.5% and 71.3

respectively.