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对国内外镁合金晶粒细化的方法和细化机理的研究现状和进展进行了综述。系统分析了镁合金晶粒细化的各种方法及其晶粒细化机理,如过热处理法、碳质孕育法、添加合金元素细化法等液态成型工艺,半固态成型工艺和热挤压、等通道转角挤压、大比率挤压等固态成型工艺。并讨论各种细化方法中存在的问题,指出今后镁合金晶粒细化的研究方向,为镁合金晶粒细化的进一步发展提供一些参考。
The current situation and progress of research on grain refinement and refining mechanism of magnesium alloy at home and abroad are reviewed. Various methods of grain refinement of magnesium alloy and grain refinement mechanism are systematically analyzed, such as over-heat treatment, carbon inoculation method, liquid-forming technique such as adding alloying element refinement method, semi-solid forming technology and hot extrusion , And other channel corner extrusion, large ratio of extrusion and other solid state molding process. The problems existing in various refinement methods are also discussed. The research direction of grain refinement of magnesium alloy is pointed out in the future, which provides some references for the further development of grain refinement of magnesium alloy.