镁合金超塑性研究进展

Research Progress in Superplasticity of Magnesium Alloys

镁合金因其密度小、比性能好、减震性能好、电磁屏蔽性好等优异性能,在航空航天、电子产品、汽车行业等有着良好的应用前景。目前镁合金还没有投入大规模工业化生产,主要原因之一就是镁合金塑性变形能力差,难以成形为复杂形状的部件。超塑性成形为这一问题的解决提供了可能,因此镁合金超塑性的研究受到了广泛重视。综述了近年来国内外Mg-Al系、Mg-Zn系、Mg-Li系和Mg-Gd系镁合金超塑性研究进展,发现不同体系的镁合金经过不同的处理方法,在理想条件下的超塑性伸长率均能达到400%以上,表现出优异的超塑性,最后对今后进一步的发展方向作出了展望。

Due to its ultra-light density,high specific properties,good damping performance and great electromagnetic shielding capability,magnesium alloy has a good application prospect in aerospace,electronic products,automobile industry,etc.Magnesium alloys have not achieved large-scale industrial application yet.One of the main reasons is that the plasticity of magnesium alloy is poor,so it is difficult to form complex shape of parts.The superplastic forming provides a possible solution to this problem,so the study of magnesium alloy superplasticity has received extensive attention.In this paper,the research status of superplasticity of Mg-Al,Mg-Zn,Mg-Li and Mg-Gd system magnesium alloys at home and abroad in recent years was reviewed,it was found that the elongation of magnesium alloys in different systems can reach more than 400%under ideal conditions with different processing,showing excellent superplasticity.Finally,the further research direction was prospected.