Heat Treatment of Metals ›› 2025, Vol. 50 ›› Issue (5): 168-174.DOI: 10.13251/j.issn.0254-6051.2025.05.026

• PROCESS RESEARCH • Previous Articles     Next Articles

Effect of solution treatment on microstructure and properties of WE43 rare earth magnesium alloy

Xiang Yuxin, He Jianli, Wang Zhihai, Liu Jinlin   

  1. School of Materials Science and Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
  • Received:2024-11-05 Revised:2025-03-28 Published:2025-06-25

Abstract: As-extruded WE43 rare earth magnesium alloy was solution treated at 525 ℃ for 4-12 h. The effect of solution time on the microstructure, mechanical properties, and corrosion resistance of the WE43 magnesium alloy was studied by means of optical microscope (OM), scanning electron microscope (SEM), compression test and electrochemical test. The results show that after solution treatment, the second phase in the alloy is basically dissolved into the magnesium alloy matrix, and only a part of the Mg-RE phase with high temperature stability is discontinuously distributed along the grain boundary. Compared to the as-extruded alloy, the solution treated alloy exhibits enhanced compressive strength and yield strength, albeit with reduced hardness. The mechanical properties and corrosion resistance of the alloy are optimized after solution treatment for 8 h.

Key words: WE43 rare earth magnesium alloy, solution treatment, microstructure, mechanical properties, corrosion resistance

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