AZ91D镁合金半固态浆料制备过程中的组织演变  

Microstructure Evolution of AZ91D Magnesium Alloy during Semi-solid Slurry Preparation

作　　者：王瑞权[1] 

机构地区：[1]兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室,甘肃兰州730050

出　　处：《上海有色金属》2009年第2期54-58,共5页Shanghai Nonferrous Metals

摘　　要：对AZ91D镁合金进行了半固态等温热处理,通过光学显微镜、扫描电镜对其组织进行了研究。结果表明,AZ91D镁合金铸件经过580℃×30min半固态等温热处理后,合金显微组织中β-Mg17Al12相基本熔入基体,枝晶状的铸态组织在等温处理过程中变得细小圆整。The mierostruetures of AZ91D magnesium alloy were investigated by OM and SEM tests after semi-solid isothermal treatment. The results show that when the alloy parts are treated by the method at 580℃ for 30 minutes, the β-Mg17 Al12 phase will basically dissolve into the matrix and the as-east dendrites gradually transform into fine spherical shape.

关 键 词：AZ91D镁合金 半固态 等温热处理 组织演变 

分 类 号：TG146.22[一般工业技术—材料科学与工程] TG146.21[金属学及工艺—金属材料]