材料工程Issue(3)：27-31,37,6.DOI:10.3969/j.issn.1001-4381.2013.03.006
5A06铝合金焊接接头裂纹失效分析
Failure Analysis of 5A06 Aluminum Alloy Welding Joint Crack
摘要
Abstract
The cracks near 5A06 aluminum alloy welding joint are analyzed. The metallurgical structure of base metal, welding joint and heat-affected zone are analyzed and the results indicate that organization is uneven and there is inclusion in the aluminum alloy, the precipitates are found in grain inner and boundary. The crack propagation character are analyzed and the results indicate that the crack originates from the inclusion of the specimen edge, and crack propagation along the grain boundary. Micro-fracture and macro fracture are analyzed by SEM and found that there are secondary cracks in the fracture, and the fracture was brittle fracture.关键词
5A06铝合金/二次裂纹/脆性断裂/沿晶断裂Key words
5A06 aluminum alloy/secondary crack/brittle fracture/intergranular fracture分类
矿业与冶金引用本文复制引用
张红霞,刘晓晴,闫志峰,王文先,李永莲..5A06铝合金焊接接头裂纹失效分析[J].材料工程,2013,(3):27-31,37,6.基金项目
国家自然科学基金项目(51175364) （51175364）
