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Effect of Reverse-threaded Pin on Mechanical Properties of Friction Stir LapWelded Alclad 2024 Aluminum Alloy

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文摘 In friction stir welding (FSW), tool geometry plays an important role in joint quality. In order to improve mechanical properties of friction stir lap welding (FSLW) joint, a tool with a reverse-threaded pin was designed in the present study. Using 2024-T4 aluminum alloy as the research object, tools with the fullthreaded pin and reverse-threaded pin were used in FSLW. Results showed that, when using the same parameter combination, FSLW joint using the reverse-threaded pin owned bigger effective sheet thickness (EST), bigger lap width and better lap shear failure strength. Compared with the full-threaded pin, fracture mode of the FSLW joint changed from shear fracture mode to tensile fracture mode when the reverse-threaded pin was used. Fracture morphologies presented ductile fracture.
来源 Journal of Materials Science & Technology ,2016,32(7):671-675 【核心库】
DOI 10.1016/j.jmst.2016.03.005
关键词 Friction stir lap welding ; Reverse-threaded pin ; Hook ; Fracture position
地址

1. Faculty of Aerospace Engineering, Shenyang Aerospace University, Shenyang, 110136  

2. Faculty of Aerospace Engineering, Shenyang Aerospace University, State Key Laboratory of Advanced Welding and Joining, Shenyang, 110136  

3. Harbin Institute of Technology, State Key Laboratory of Advanced Welding and Joining, Harbin, 150001

语种 英文
文献类型 研究性论文
ISSN 1005-0302
学科 金属学与金属工艺
基金 国家自然科学基金 ;  辽宁省自然科学基金 ;  the Project of Science and Technology Department of Liaoning Province ;  中国航空科学基金
文献收藏号 CSCD:5746153

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引证文献 9

1 Wang F F Improving weld formability by a novel dual-rotation bobbin tool friction stir welding Journal of Materials Science & Technology,2018,34(1):135-139
被引 11

2 Niu Pengliang Global and local constitutive behaviors of friction stir welded AA2024 joints Journal of Materials Science & Technology,2017,33(9):987-990
被引 6

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