Mechanism investigation of gas porosity induced fatigue damage on the fusion welded high strength aluminum alloy

摘要：

　　For the welded aluminum alloy car body stucture of high-speed train, the primary internal reason to deteriorate the fatigue performance is the gas porosity from both metallurgical and technological aspect, which seriously threatens the driving safety every minute and every moment. Since the late 1950s, many scientists and engineers have made the significant progress in the relationship between the source, size, amount, morphology, position and spatial distribution of gas porosity and the resulting fatigue properties of fusion welded joints.

关键词： high strength aluminum alloy hybrid laser arc welding gas porosity induced fatigue damage X-ray synchrotron radiation Life prediction

作者: Shengchuan Wu Weihua Zhang

作者单位: State Key Lab of Traction Power,Southwest Jiaotong University,111 Section 1 North Second RingRoad,Chengdu 610031,China

会议类型: 国际会议

会议名称: 第13届国际断裂大会(ICF2013)

会议地点: 北京

会议语种:英文

页码: 1-1

在线出版日期: 2013-06-16（万方平台首次上网日期，不代表论文的发表时间）