镁合金中LPSO结构与形成机制的研究进展

Research progress of long-period stacking ordered(LPSO)structures and formation mechanisms in magnesium alloys

长周期堆垛(LPSO)结构可显著提高镁合金的强度、伸长率、抗蠕变和耐腐蚀性能,是高强韧镁合金研究的热点。综述6H、10H、14H、18R和24R-LPSO结构类型、特点,对比分析不同LPSO结构的形成机制和转换关系,提出LPSO结构研究的发展方向。

Long-period stacking ordered（LPSO）structures can significantly improve the strength,ductility,creep and corrosion resistance of magnesium alloy,which has become the research hotspot of the high strength and toughness magnesium alloys. The LPSO structure types and characteristics of the 6H,10 H,14H,18 R and 24 R are reviewed,the formation mechanism and conversion relationship of LPSO structures are contrastively analyzed with magnesium-based alloy,and research directions of LPSO structures are proposed.