铸造技术2017，Vol.38Issue(7)：1631-1634,4.DOI:10.16410/j.issn1000-8365.2017.07.028
汽车板点焊接头检测与失效特性研究
Detection of Spot-welding Joints of Car Panel and Their Failure Characteristics
高清华 1潘美玲 1樊涛2
作者信息
- 1. 内蒙古交通职业技术学院汽车工程系,内蒙古赤峰024005
- 2. 内蒙古工业大学材料科学与工程学院,内蒙古呼和浩特010051
- 折叠
摘要
Abstract
Fracture failure modes and causes for welded joints of car panel under different welding process were analyzed,and the bearing performance of spot welded joints with different fracture failure mode was analyzed through mechanical property tests.The results show that the failure modes of welded joints for high strength car panel are divided into interface fracture,fusion line fracture and heat affected zone fracture.The bearing performance of welded joints with interfacial fracture is low,secondly is the fusion line failure,and the bearing performance of welded joints with heat affected zone fracture is highest.The nugget zone fracture under interfacial fracture mode has tear ridges and elongated dimples,and fracture under fusion line fracture mode is mainly composed of shallow ductile dimples with uneven size distribution.关键词
汽车板/点焊接/断裂失效/承载性能/断口Key words
ear panel/spot welding/fracture failure/bearing capacity/fracture分类
矿业与冶金引用本文复制引用
高清华,潘美玲,樊涛..汽车板点焊接头检测与失效特性研究[J].铸造技术,2017,38(7):1631-1634,4.
