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Li X.,University of Electronic Science and Technology of China | Wu G.,University of Electronic Science and Technology of China | Zeng Z.,University of Electronic Science and Technology of China | Wang J.,Chengdu Hanyan Weida Automatic Welding Equipment Co. | Zhao G.,Chengdu Hanyan Weida Automatic Welding Equipment Co.
Hanjie Xuebao/Transactions of the China Welding Institution | Year: 2011

The AZ31B magnesium alloy and 304 L stainless steel butt joint were obtained in laser-TIG hybrid welding. A new coupled heat source model was developed, which combined by double-elliptic planar distribution, double-ellipsoid body distribution and Rotary-Gauss body distribution model. The thermo-mechanical behavior and residual stresses distribution of the butt joint were analyzed by using finite element techniques. The results show that the temperature distribution of the dissimilar metal hybrid weld joint is different, and the residual stress on the 304L stainless steel plate is lower than that on the AZ31B magnesium plate.

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