ZK61M镁合金锻件条状缺陷分析  

Analysis of strip-defects in ZK61M magnesium alloy forgings

作　　者：李俊茂[1] 王美琪[1] 牛占先[1] 侯显智[1] 竭艳丽[1] 王亚丰[1] 

机构地区：[1]东北轻合金有限责任公司,黑龙江哈尔滨150060

出　　处：《轻合金加工技术》2010年第12期33-34,42,共3页Light Alloy Fabrication Technology

摘　　要：针对ZK61M镁合金锻件存在的条状缺陷,通过低倍组织、显微组织、扫描电镜以及能谱分析等多方面进行了组织分析,确定镁合金锻件中的条状缺陷实质为Zn-Cr化合物初晶,并对化合物初晶的形成机理、影响因素和工艺改进措施进行了阐述。The strip form defects existed in ZK61M magnesium alloy forgings have been analyzed by macrostructure-scope,microstructure-scope,scanning electron microscope and energy spectrometer.The result shows that the strip defects are primary segregation of Zn-Cr.The forming mechanism and effective factor of the primary segregation have been investigated.The improved technology has been discussed.

关 键 词：ZK61M镁合金 化学成分 铸造温度 化合物初晶 

分 类 号：TG319[金属学及工艺—金属压力加工]