|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Friction Stir Welding and Processing IX
||A-89: Friction Stir Welding of Dissimilar Metals
||Xiangbin Wang, Yi Pan, Diana A. Lados
|On-Site Speaker (Planned)
Friction stir welding (FSW) is a solid-state welding process that has demonstrated the ability to join both similar and dissimilar alloys, as well as materials unweldable by traditional fusion welding techniques. To develop a fundamental understanding of the process, it is imperative to establish relationships between welding parameters and weld quality, resulting microstructures, and mechanical properties. Dissimilar welds using multiple rotation and traverse speed combinations were produced using three heat treated wrought aluminum alloys (Al6061-T651, Al2024-T351, and Al7075-T735), located systematically on both advancing and retreating sides of the weld. Similar welds were also produced and characterized for comparison. Weld quality was first evaluated to assess and optimize the processing conditions. Further, microstructural changes were systematically evaluated and correlated with micro-hardness and tensile properties of the welds. FSW of Al6061-T651 to steel was also performed successfully, and the resulting microstructures and mechanical properties will also be presented and discussed.
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