Experimental Investigation on Fatigue Properties of FSW in Aircraft Al Alloys
- 作者：Xinqi YangDapeng FangGuohong LuanBo Jian
- 会议时间：2012-10-18
- 关键词：friction stir welding ; Al-Cu alloys ; weak-bond defect ; fatigue properties
- 作者单位：Xinqi Yang,Dapeng Fang(School of materials Science and Engineering,Tianjin university Tianjin 300072, China)Guohong Luan,Bo Jian(China FSW Center Beijing FSW technology Go., Ltd, Beijing 100024, China)
- 母体文献：第二届搅拌摩擦焊国际会议论文集
- 会议名称：第二届搅拌摩擦焊国际会议
- 会议地点：北京
- 主办单位：中国搅拌摩擦焊中心
- 语种：chi
摘要
The fatigue properties of friction stir welds (FSW) in 2024-T4 and 2014-T6 Al-Cu alloys have been investigated.It was shown that the greater welding travel speed 250mm/min would be benefit to increase the high cycle fatigue strength,the rotational speed of stirring tool between 1000 rpm and 800rpm and the surface treatment condition of specimens would have smaller influence on the fatigue strength; when weak-bond defects with a depth of 0.310-0.335mm were presented at the root site of welds,the characteristic values of high cycle fatigue strength would be apparently decreased for 2024-T4 and 2014-T6 friction stir welded joints with a reduction of about 20% and 37% respectively.