Microstructures and Mechanical Properties of Friction Stir Spot Welded Aluminum Alloy AA2014

被引：47
|
作者：
Babu, S. [1 ]
Sankar, V. S. [1 ]
Ram, G. D. Janaki [1 ]
Venkitakrishnan, P. V. [2 ]
Reddy, G. Madhusudhan [3 ]
Rao, K. Prasad [1 ]
机构：
[1] Indian Inst Technol, Dept Met & Mat Engn, Madras 600036, Tamil Nadu, India
[2] ISRO, Liquid Prop Syst Ctr, Thiruvananthapuram, India
[3] Def Met Res Lab, Hyderabad 500258, Andhra Pradesh, India
来源：
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2013年 / 22卷 / 01期
关键词：
aluminum alloys; bond width; friction stir spot welding; hook height; lap-shear testing; FATIGUE LIFE ESTIMATIONS; LAP-SHEAR SPECIMENS; STATIC STRENGTH; TOOL GEOMETRY; FAILURE MODES; STRAIN-RATE; PARAMETERS; BEHAVIOR; SHEETS; JOINTS;
D O I：
10.1007/s11665-012-0218-z
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Friction stir spot welding (FSSW) is a relatively recent development, which can provide a superior alternative to resistance spot welding and riveting for fabrication of aluminum sheet metal structures. In the current work, FSSW experiments were conducted in 3-mm thick sheets of aluminum alloy 2014 in T4 and T6 conditions, with and without Alclad layers. The effects of tool geometry and welding process parameters on joint formation were investigated. A good correlation between process parameters, bond width, hook height, joint strength, and fracture mode was observed. The presence of Alclad layers and the base metal temper condition were found to have no major effect on joint formation and joint strength. Friction stir spot welds produced under optimum conditions were found to be superior to riveted joints in lap-shear and cross-tension tests. The prospects of FSSW in aluminum sheet metal fabrication are discussed.
引用
收藏
页码：71 / 84
页数：14
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