7A52合金锻件探伤不合格的原因分析  

Analysis on Disqualification Cause of Ultrasonic Non-destructive Testing for 7A52 Alloy Forgings

作　　者：陈丽君[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：《铝加工》2010年第4期43-45,共3页Aluminium Fabrication

摘　　要：分析了7A52合金锻件探伤不合格的原因,确认探伤缺陷是内部组织中存在粗大金属化合物聚集,导致锻件变形时沿粗大化合物开裂所致,并从合金元素含量、熔铸温度、液流分配、漏斗预热等方面提出了解决措施。Disqualification cause of ultrasonic non-destructive testing for 7A52 alloy forgings was analyzed in the paper.It was confirmed that the defects was due to coarse metal compound existed in internal structure,thus cracking along coarse compound during forging deformation.Solution was put forward from the aspects of alloy element content,melting and casting temperature,flow distribution and funnel pre-heating etc.

关 键 词：7A52合金 粗大化合物 裂纹 探伤 

分 类 号：TG316.192[金属学及工艺—金属压力加工]