AZ91D镁合金激光熔凝层的缺陷
Defects in Laser Remelting Layer of AZ91D Magnesium Alloy
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。
激光熔凝
缺陷
magnesium alloy
laser remelting
defect
Abstract
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.
中图分类号 TG166.4
所属栏目 试验与研究
基金项目 吉林省教育厅资助项目（吉教科合字[2006]第70号）
收稿日期 2008/5/26
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备注赵 宇(1968-),男,博士，副教授。
引用该论文: ZHAO Yu,CUI Zhen-yu,CHEN Li,ZHAO Jing. Defects in Laser Remelting Layer of AZ91D Magnesium Alloy[J]. Physical Testing and Chemical Analysis part A:Physical Testing, 2009, 45(4): 202～204
赵 宇1,2,崔振宇1,陈 莉1,赵 静1. AZ91D镁合金激光熔凝层的缺陷[J]. 理化检验－物理分册, 2009, 45(4): 202～204
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