稀土镁合金沉淀析出行为研究进展

摘要

概述了稀土镁合金(Mg-RE)沉淀析出行为的研究进展.根据析出序列的不同将稀土镁合金分为Mg-Gd、Mg-Y、Mg-Nd及Mg-MM四种类型,对不同类型Mg-RE的沉淀析出序列及析出相的形貌、晶体学特征参数、转变动力学机制和沉淀强化行为做了较为详尽的综述.此外还指出了Mg-RE沉淀析出行为研究中存在的不足,并展望了其发展前景及今后的研究方向.%A review on research progress of precipitation behavior in Mg-RE alloys is presented. According to precipitation sequence, Mg-RE alloys are classified into four types-Mg-Gd, Mg-Y, Mg-Nd and Mg-MM Each type of precipitation sequence is summarized, focusing on the morphology, crystal structure, orientation relationship, transformation law and strengthening mechanism of precipitation phase. In addition, existing problems in the research of precipitation behavior are pointed out, the prospect and future researchs trend are proposed.