AZ91D镁合金激光熔凝层的缺陷  

Defects in Laser Remelting Layer of AZ91D Magnesium Alloy

作　　者：赵宇[1,2] 崔振宇[1] 陈莉[1] 赵静[1] 

机构地区：[1]长春工业大学先进结构材料省部共建教育部重点实验室,长春130012 [2]吉林大学教育部汽车材料重点实验室,长春130025

出　　处：《理化检验（物理分册）》2009年第4期202-204,211,共4页Physical Testing and Chemical Analysis(Part A:Physical Testing)

基　　金：吉林省教育厅资助项目(吉教科合字[2006]第70号)

摘　　要：以AZ91D镁合金为研究对象,研究激光熔凝镁合金的工艺特点,分析熔凝层中出现的常见缺陷,并探讨其产生的主要原因。结果表明:气孔、裂纹和夹杂是AZ91D镁合金激光熔凝层中存在的主要缺陷。但只要熔凝过程中工艺参数选择合适,这些缺陷是可以避免或减少的。The technology characteristic of magnesium alloy after laser remelting and the common defects in the solidifying layer were studied. The prime reasons which bring microstructure defection were discussed also. The results show that the primary defects in solidifying layer of AZ91D magnesium alloy are gas cavity, crack and inclusion. These defects can be avoided or decreased if only the technology parameters are selected in reason during remelting process.

关 键 词：镁合金 激光熔凝 缺陷 

分 类 号：TG166.4[金属学及工艺—热处理]