|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Friction Stir Welding and Processing IX
||Round Material Flow in Friction Stir Welding of Aluminum Alloy
||Xiaochao Liu, Yufeng Sun, Yoshiaki Morisada, Hidetoshi Fujii
|On-Site Speaker (Planned)
Round material flow during the friction stir welding of an aluminum alloy was fully observed by an ingenious experimental design, in which two different aluminum alloys were configured side-by-side and the tool traversed from one to the other. After welding, observation of the keyhole from the transverse cross-section, horizontal cross-section and longitudinal cross-section was performed. Under various weld lengths, the distributions of the first material around the keyhole clearly showed the round flow and the dynamic evolution of the material in the stir zone. These results revealed that the round flow mainly occurred in the shoulder-affected zone. The material beneath the shoulder travelled with the tool for a long distance and gradually deposited on the weld top surface.
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