挤压铸造AZ91D合金工艺参数的研究  

Research on Process Parameters of Squeeze Casting For AZ91D Magnesium Alloy

作　　者：徐慧[1] 李天生[1] 张洪[1] 

机构地区：[1]湖南工学院机械工程系,湖南衡阳421008

出　　处：《热加工工艺》2009年第23期66-68,共3页Hot Working Technology

基　　金：湖南省教育厅科学研究项目(09C287);衡阳市工业科技支撑计划项目(2009KG54)

摘　　要：为了提高挤压铸造AZ91D合金制件的质量,在实验室条件下,运用多因素正交实验,采用不同工艺参数对该镁合金的成形性进行了研究。试样经力学性能测试和显微组织分析,结果表明:浇注温度为730℃、挤压压力为100MPa、保压时间为25s时所得试样晶粒细小,析出了更多的第二强化相β(Al12Mg17),试样的综合力学性能最好。In order to improve the quality of squeeze casting, the different technology parameters were adopted to study the forming property of AZ91D alloy by applying multifactor orthogonal test under laboratory condition. The mechanical properties and microstructure were tested and observed. The results show that the combination mechanical properties is best, grain is thin and the precipitation of second phase particle β（Al12Mg17） is more, when pouring temperature is 730 ℃, squeezing force is 100 MPa and holding time is 25 s.

关 键 词：AZ91D合金 挤压铸造 工艺参数 力学性能 

分 类 号：TG292[金属学及工艺—铸造] TG146.22[一般工业技术—材料科学与工程]