Influence of Friction Stir Welding Process on the Weld Formation and Tensile Strength of Titanium and Aluminum Dissimilar Alloys Welded Joint

Abstract:

Titanium alloy TC1 and Aluminum alloy LF6 were jointed by friction stir welding (FSW), and the influence of process parameters on formation of weld surface, cross-section morphology and tensile strength were studied. The results show that, Titanium and Aluminum dissimilar alloy is difficult to be joined by FSW, and some defects such as cracks and grooves are easy to occur. When the rotational speed of stir head(n) is 750r/min and 950r/min, the welding speed(v) is 118mm/min or 150mm/min, a good formation of weld surface can be obtained, but the bonding of titanium/aluminum interface in the cross-section of weld joint is bad when n is 750r/min which results in a low strength joint. When n is 950r/min and v is 118mm/min，the strength of the FSW joint of Titanium/Aluminum dissimilar materials is 131MPa which is the highest．

• Periodical: Advanced Materials Research (Volumes 189-193)
• Pages: 3266-3269
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.189-193.3266
• Online since: February 2011
• Authors: Yu Hua Chen, Peng Wei, Quan Ni, Li Ming Ke
• Keywords: Aluminium Alloy, Dissimilar Metal, Friction Stir Welding (FSW), Titanium Alloy

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