Authors: HanSur Bang HeeSeon Bang J H Hong G H Jeon G S Kim A F H Kaplan
Publish Date: 2016/03/23
Volume: 48, Issue: 1, Pages: 152-159
Abstract
The purpose of this study is to clarify the effect of tungsteninertgas TIG welding preheating on the mechanical properties of Al6061T6 and SS400 welded joints by friction stir welding FSW FSW joints with and without TIG welding preheating are characterized and compared in terms of their mechanical and microstructural properties The results show that the TIG assisted hybrid FSW welded joints TIGHFSW provide an enhanced joint strength The transversal tensile strength of the TIGHFSW joints exhibited approximately 104 of the Al6061T6 base metal tensile strength and was higher than that of the FSW joints Microstructural investigations also reveal that in the HAZ and TMAZ of TIGHFSW joints the grains of Al6061T6 are smaller than those of the FSW welds
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