| 镁合金/不锈钢激光-TIG复合焊的数值分析 |
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| 引用本文： | 李迅波,吴刚,曾志,王锦夏,赵刚.镁合金/不锈钢激光-TIG复合焊的数值分析[J].焊接学报,2011,32(8):49-52. |
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| 作者姓名： | 李迅波 吴刚 曾志 王锦夏 赵刚 |
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| 作者单位： | 1. 电子科技大学机械电子工程学院,成都,611731
2. 成都焊研威达自动焊接设备有限公司,成都,610300 |
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| 基金项目： | 成都市科技攻关计划重点基金资助项目 |
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| 摘 要： | 应用Nd：YAG激光-TIG（非熔化极氩弧焊）复合焊接技术对AZ31B镁合金板和304L不锈钢板进行异种材料对接焊.根据复合焊接的能量耦合机理,建立了基于双椭圆平面分布、双椭球体积分布和旋转-高斯体积分布相结合的复合焊接热源模型,利用有限元数值模拟,分析了复合焊接温度场及残余应力分布.结果表明,对异种材料而言,焊缝处温度场差别较大,且镁合金侧的残余应力较高.
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| 关 键 词： | 镁合金 不锈钢 复合焊接 残余应力 |
| 收稿时间： | 2011/1/23 0:00:00 |
Numerical analysis of residual stress on magnesium alloy and stainless steel butt joint by hybrid laser-TIG welding |
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| LI Xunbo,WU Gang,ZENG Zhi,WANG Jinxia and ZHAO Gang.Numerical analysis of residual stress on magnesium alloy and stainless steel butt joint by hybrid laser-TIG welding[J].Transactions of The China Welding Institution,2011,32(8):49-52. |
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| Authors: | LI Xunbo WU Gang ZENG Zhi WANG Jinxia and ZHAO Gang |
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| Affiliation: | School of Mechatronics Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China,School of Mechatronics Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China,School of Mechatronics Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China,Chengdu Hanyan Weida Automatic Welding Equipment Co., Ltd, Chengdu 610300, China and Chengdu Hanyan Weida Automatic Welding Equipment Co., Ltd, Chengdu 610300, China |
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| Abstract: | The AZ31B magnesium alloy and 304L 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 thermomechanical 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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| Keywords: | magnesium alloy stainless steel hybrid welding residual stress |
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