电焊机2017，Vol.47Issue(8)：84-86,3.DOI:10.7512/j.issn.1001-2303.2017.08.16
不同返修次数对6082-T6铝合金对接接头疲劳性能的影响
Effect of different times of repair on fatigue properties of 6082-T6 aluminum alloy butt joints
耿涛 1许鸿吉 1宗桓旭 1祁艺洋1
作者信息
- 1. 大连交通大学材料科学与工程学院,辽宁大连116028
- 折叠
摘要
Abstract
TThe 6082-T6 aluminum alloys butt-joints of different times of repair,which is used for high-speed train,were studied respectively through pulsating tensile fatigue test and scanning analysis for the fatigue fractures.The results showed that:the welding joints median value fatigue limit strength that specifies life of 1×107 increased with the increase of repair times.When the friction stir welding was repaired two times,the fatigue limit strength of welded joint was higher,the fracture location of the FSW specimen was mainly concentrated on the edge of the back surface welding seams.The scanning photos showed that the panorama of the fracture was like fibrous;the fatigue beach on the crack initiation zone and extending zone was vivid;the final broken zone was the toughness fracture of low dimple type.关键词
返修次数/搅拌摩擦焊/疲劳性能Key words
repair times/friction stir welding/fatigue performance分类
矿业与冶金引用本文复制引用
耿涛,许鸿吉,宗桓旭,祁艺洋..不同返修次数对6082-T6铝合金对接接头疲劳性能的影响[J].电焊机,2017,47(8):84-86,3.
