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Journal ArticleDOI

Microstructure and Mechanical Properties of Friction Stir Lap Welded Aluminum Alloy AA2014

TL;DR: Friction stir lap welds were produced in 3 mm thick Alclad sheets of Al alloy 2014-T4 using two different tools (with triangular and threaded taper cylindrical pins) as mentioned in this paper.
About: This article is published in Journal of Materials Science & Technology.The article was published on 2012-05-01. It has received 93 citations till now. The article focuses on the topics: Alclad & Friction stir welding.
Citations
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Journal ArticleDOI
Youbao Song1, Xinqi Yang1, Lei Cui1, Xiaopeng Hou1, Zhikang Shen1, Yan Xu1 
TL;DR: In this article, the influence of process conditions (welding speed and joint combination) on defects (hook and voids) features and mechanical properties of joints were investigated in detail.

135 citations

Journal ArticleDOI
TL;DR: In this article, five different tool designs have been employed to analyse the influence of rotation speed and traverse speed over the microstructural and tensile properties of dissimilar AA2024 and AA6061 aluminium plates of 5mm thickness.

99 citations

Journal ArticleDOI
TL;DR: In this paper, a refill friction stir spot welding (RFSSW) was used to weld 2 mm-thick 5083-O alloy and three fracture modes were obtained during the lap shear test and all were affected by the hook defect.

74 citations

Journal ArticleDOI
TL;DR: In this article, a self-support friction stir welding (SSFSW) tool with a big concave upper shoulder and a small convex lower shoulder was developed for making reliable welds in aluminum hollow extrusion.

68 citations

Journal ArticleDOI
TL;DR: In this paper, the effect of tool tilt angle on the strength of friction stir lap welding of AA2014-T6 aluminium alloy was investigated. And the results proved that, defect-free weld joint was obtained while using a tool-tilt angle of 1° to 3°.

68 citations

References
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Journal ArticleDOI
TL;DR: In this article, the authors deal with the fundamental understanding of the process and its metallurgical consequences, focusing on heat generation, heat transfer and plastic flow during welding, elements of tool design, understanding defect formation and the structure and properties of the welded materials.

1,811 citations

Journal ArticleDOI
TL;DR: In this paper, a FSW process with varying pin geometries and advancing speeds is numerically modeled, and a thermo-mechanically coupled, rigid-viscoplastic, fully 3D FEM analysis able to predict the process variables as well as the material flow pattern and the grain size in the welded joints is performed.
Abstract: In friction stir welding (FSW), the welding tool geometry plays a fundamental role in obtaining desirable microstructures in the weld and the heat-affected zones, and consequently improving strength and fatigue resistance of the joint. In this paper, a FSW process with varying pin geometries (cylindrical and conical) and advancing speeds is numerically modeled, and a thermo-mechanically coupled, rigid-viscoplastic, fully 3D FEM analysis able to predict the process variables as well as the material flow pattern and the grain size in the welded joints is performed. The obtained results allow finding optimal tool geometry and advancing speed for improving nugget integrity of aluminum alloys.

269 citations

Journal ArticleDOI
TL;DR: In this paper, Mg-Al-Zn alloys were lap joined using friction stir welding during which the probe of a tool did not contact the surface of the lower Mg−Al−Zn alloy sheet, and micro X-ray diffraction was used to analyze phase transition in the joint.

236 citations

Journal ArticleDOI
TL;DR: In this article, the maximum failure load of joints reached 62% of Al-Si alloy base metal with the joints fractured at the interface, and the microstructure evolution and the joining mechanism of aluminum-titanium joints were systematically discussed.

233 citations