• CN: 11-2187/TH
  • ISSN: 0577-6686

Journal of Mechanical Engineering ›› 2024, Vol. 60 ›› Issue (7): 385-400.doi: 10.3901/JME.2024.07.385

Previous Articles     Next Articles

Research Progress in High-performance Mg Alloys Prepared by Additive Manufacturing

ZHENG Yang1,2,3, ZHAO Zihao2,4, LIU Wei5, YU Zhengzhe3, NIU Wei2,4, LEI Yiwen2,4, SUN Ronglu2,4   

  1. 1. School of Aeronautics and Astronautics, Tiangong University, Tianjin 300387;
    2. Tianjin Area Major Laboratory of Advanced Mechatronics Equipment Technology, Tianjin 300387;
    3. China Civil Aviation Science and Technology Industrialization Base, Tianjin 300308;
    4. School of Mechanical Engineering, Tiangong University, Tianjin 300387;
    5. 3D Printing Research & Engineering Technology Center, AECC Beijing Institute of Aeronautical Materials, Beijing 100095
  • Received:2023-04-08 Revised:2023-11-04 Online:2024-04-05 Published:2024-06-07

Abstract: Mg alloys have broad application prospects in aerospace, rail transit, new energy, biomedical and other fields. The development of additive manufacturing (AM) technologies has made it possible to form high-performance Mg alloys with complex structures. However, the characteristics of low melting and boiling points, high vapor pressure as well as strong oxidation activity of Mg alloys usually lead to the formation of pores, cracks, inclusions and other defects in the AM-prepared components, which results in the application level of AM-prepared Mg alloys far behind the superalloys, Al alloys, Ti alloys and other materials. Therefore, exploring more suitable AM technologies for Mg alloys and reducing their defects via material modification and process optimization are key solutions to break through the application bottlenecks of AM-prepared Mg alloys. The main AM technologies for Mg alloys include selective laser melting (SLM), wire arc additive manufacturing (WAAM), friction stir additive manufacturing (FSAM) and additive friction stir deposition (AFSD). The research status and technical progress of AM technologies for Mg alloys are reviewed. The numerical simulation results of Mg alloys forming process during different AM technologies are summarized. The effects of key processing parameters of different AM technologies on microstructures and mechanical properties of Mg alloys are comparatively analyzed. The future research directions of AM technologies for Mg alloys are also prospected.

Key words: additive manufacturing, Mg alloys, numerical modeling, microstructure, mechanical properties

CLC Number: