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题名: Effect of Welding Speed on Defect Features and Mechanical Performance of Friction Stir Lap Welded 7B04 Aluminum Alloy
作者: Zhang HJ(张会杰); Wang M(王敏); Zhang X(张骁); Zhu Z(朱智); Yu T(于涛); Yang GX(杨广新)
作者部门: 空间自动化技术研究室
关键词: friction stir lap welding ; aluminum alloy ; welding speed ; defect feature ; mechanical performance
刊名: METALS
ISSN号: 2075-4701
出版日期: 2016
卷号: 6, 期号:4
收录类别: SCI
产权排序: 1
项目资助者: National Natural Science Foundation of China [51505471] ; Special Fund for Youth Innovation Promotion Association, Chinese Academy of Sciences [2015162]
摘要: Friction stir lap welding of 7B04 aluminum alloy was conducted in the present paper, and the effect of welding speed on the defect features and mechanical performance of lap joints was investigated. The results indicate that the hook defect at the advancing side (AS) can reduce the effective thickness of the top sheet, and the sheet thinning level is gradually lowered by increasing the welding speed. The cold lap defect at the retreating side (RS) can result in effective thickness reduction in both top and bottom sheets, and the total height of the cold lap defect varies slightly with the welding speed. The tensile properties of the lap joints are largely related to the sheet thinning levels caused by the defects. The fracture strength of AS-loaded lap joints is progressively increased with increasing welding speed, while that of RS-loaded lap joints evolves slightly with welding speed. It is found that the affecting characteristic of loading configuration on the joint performance is also dependent on the welding speed. At lower welding speeds, the AS-loaded lap joints show lower fracture strength than the RS-loaded lap joints. When the welding speed is high, the AS-loaded lap joints present superior tensile properties to RS-loaded lap joints.
语种: 英语
WOS记录号: WOS:000375861100017
WOS标题词: Science & Technology ; Technology
类目[WOS]: Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
关键词[WOS]: JOINT PROPERTIES ; STRENGTH
研究领域[WOS]: Materials Science ; Metallurgy & Metallurgical Engineering
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内容类型: 期刊论文
URI标识: http://ir.sia.cn/handle/173321/18664
Appears in Collections:空间自动化技术研究室_期刊论文

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Recommended Citation:
Zhang HJ,Wang M,Zhang X,et al. Effect of Welding Speed on Defect Features and Mechanical Performance of Friction Stir Lap Welded 7B04 Aluminum Alloy[J]. METALS,2016,6(4).
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文件名: Effect of Welding Speed on Defect Features and Mechanical Performance of Friction Stir Lap Welded 7B04 Aluminum Alloy.pdf
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