段兴旺,谈芸芸,辛向前,车鑫,江冬

• 1:太原科技大学材料科学与工程学院

摘要(Abstract)：

采用应变诱发熔化激活法(SIMA)制备WE43镁合金半固态坯料，研究保温温度和保温时间对其半固态组织的影响，分析了不同工艺参数下合金的平均晶粒尺寸、液相率及固相形状因子的变化规律，探讨半固态组织演变机制。结果表明：随着保温温度升高和保温时间延长，WE43镁合金的平均晶粒尺寸和液相率显著增加，而固相形状因子则呈现先上升后下降的趋势；半固态组织由α-Mg晶粒、晶界液相及晶内“小液池”组成，其晶粒演变过程分为初始长大、球化分离及合并粗化3个阶段，演变机制为Ostwald熟化机制和晶粒合并长大机制；采用SIMA工艺制备WE43镁合金半固态坯料的最佳工艺为在610℃保温45 min。

关键词(KeyWords)： WE43镁合金;SIMA;半固态坯料;组织演变

Abstract:

Keywords:

基金项目(Foundation): 山西省基础研究计划资助项目(202203021211191)

作者(Author): 段兴旺,谈芸芸,辛向前,车鑫,江冬

DOI: 10.13289/j.issn.1009-6264.2025-0097

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