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Metals 2019, 9(3), 270;

Friction Stir Welding of Dissimilar Aluminum Alloy Combinations: State-of-the-Art

State Key Laboratory of Solidification Processing, Shaanxi Key Laboratory of Friction Welding Technologies, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an 710072, China
Department of Mechanical Engineering, School of Technology, Pandit Deendayal Petroleum University, Gandhinagar 382007, India
China Academy of Launch Vehicle Technology, Beijing Institute of Astronautical Systems Engineering, Beijing 100076, China
Mechanical Engineering Department, TEI of Crete, Heraklion 71004, Greece
Author to whom correspondence should be addressed.
Received: 17 January 2019 / Revised: 8 February 2019 / Accepted: 11 February 2019 / Published: 26 February 2019
(This article belongs to the Special Issue Dissimilar Metal Welding)
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Friction stir welding (FSW) has enjoyed great success in joining aluminum alloys. As lightweight structures are designed in higher numbers, it is only natural that FSW is being explored to join dissimilar aluminum alloys. The use of different aluminum alloy combinations in applications offers the combined benefit of cost and performance in the same component. This review focuses on the application of FSW in dissimilar aluminum alloy combinations in order to disseminate research this topic. The review details published works on FSWed dissimilar aluminum alloys. The detailed summary of literature lists welding parameters for the different aluminum alloy combinations. Furthermore, auxiliary welding parameters such as positioning of the alloy, tool rotation speed, welding speed and tool geometry are discussed. Microstructural features together with joint mechanical properties, like hardness and tensile strength measurements, are presented. At the end, new directions for the joining of dissimilar aluminum alloy combinations should guide further research to extend as well as to improve the process, which is expected to raise further interest on the topic. View Full-Text
Keywords: aluminum; dissimilar; friction stir welding; FSW; hardness; microstructure; tensile aluminum; dissimilar; friction stir welding; FSW; hardness; microstructure; tensile

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Patel, V.; Li, W.; Wang, G.; Wang, F.; Vairis, A.; Niu, P. Friction Stir Welding of Dissimilar Aluminum Alloy Combinations: State-of-the-Art. Metals 2019, 9, 270.

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