Heat Treatment of Metals ›› 2023, Vol. 48 ›› Issue (7): 237-244.DOI: 10.13251/j.issn.0254-6051.2023.07.040

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Research progress on laser surface melting treatment of magnesium alloys

Zhang Xi1, Wen Jinhao1, Wu Bingbing1, Xie Fang1, Ma Xinbo1, Kong Fanxiao2   

  1. 1. School of Intelligent Manufacturing, Nanyang Institute of Technology, Nanyang Henan 473000, China;
    2. College of Materials Science and Engineering, Chongqing University, Chongqing 400030, China
  • Received:2022-12-05 Revised:2023-05-09 Online:2023-07-25 Published:2023-09-04

Abstract: Magnesium alloys are excellent lightweight material and potential implant material for human body. However, they are active and have poor corrosion resistance. The laser surface melting (LSM) technology can quickly form a melting layer with fine grains on the surface of magnesium alloy and change the surface microstructure and composition, and has an important influence on improving the corrosion resistance and biocompatibility. The recent studies on laser surface melting of the magnesium alloys are reviewed. The effect of laser surface melting on microstructure, composition, wettability, corrosion resistance and biocompatibility of the magnesium alloys is analyzed. The development directions of laser melting treatment on microstructure transformation, corrosion mechanism and mechanical behavior, degradation behavior and biocompatibility of the magnesium alloys are summarized and prospected.

Key words: magnesium alloy, laser surface melting, microstructure, corrosion resistance, biocom patibility

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