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| 镁合金真空电子束深熔焊接及焊缝成形数值模拟 | |
| 引用本文： | 罗怡,刘金合,叶宏,申彬.镁合金真空电子束深熔焊接及焊缝成形数值模拟[J].焊接学报,2010,31(6):65-68. |
| 作者姓名： | 罗怡 刘金合 叶宏 申彬 |
| 作者单位： | 1. 西北工业大学,材料学院,西安,710072;江苏科技大学,先进焊接技术省级重点实验室,江苏,镇江,212003;重庆理工大学,材料科学与工程学院,重庆,400050 2. 西北工业大学,材料学院,西安,710072 3. 重庆理工大学,材料科学与工程学院,重庆,400050 |
| 基金项目： | 江苏科技大学先进焊接技术省级重点实验室开放研究基金 |
| 摘 要： | 对10mmAZ61镁合金板材进行了真空电子束深熔焊接数值模拟研究.考虑到焊接过程中高温金属蒸气等离子体的热效应及真空电子束焊接"匙孔"深熔热效应特征,建立了高斯面热源与双椭球体热源复合的移动热源模型,采用数值模拟的方法研究了镁合金真空电子束焊接温度循环特征及不同焊接工艺对焊缝成形的影响.结果表明,建立的复合热源模型能够获得电子束深熔焊接的效果,并可模拟不同焊接工艺下的温度场分布与电子束热源作用下的焊缝成形,这也证明了该模型在AZ61镁合金电子束平板焊接的热效应模拟中有较好的适用性. |
| 关 键 词： | 镁合金 电子束焊接 复合热源 焊缝成形 数值模拟 |
| 收稿时间： | 2009/1/5 0:00:00 |
Numerical simulation on electron beam deep penetration welding and weld appearance of magnesium alloy |
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| LUO Yi,LIU Jinhe,YE Hong and SHEN Bin.Numerical simulation on electron beam deep penetration welding and weld appearance of magnesium alloy[J].Transactions of The China Welding Institution,2010,31(6):65-68. | |
| Authors: | LUO Yi LIU Jinhe YE Hong and SHEN Bin |
| Affiliation: | School of Material Science and Engineering, Northwestern Polytechnical University, Xi''an 710072, China;Province Key Laboratory of Advanced Welding Technology, Jiangsu University of Science and Technology, Zhenjiang 212003, Jiangsu, China;School of Material Science and Engineering, Chongqing Institute of Technology, Chongqing 400050, China,School of Material Science and Engineering, Northwestern Polytechnical University, Xi''an 710072, China,School of Material Science and Engineering, Chongqing Institute of Technology, Chongqing 400050, China and School of Material Science and Engineering, Chongqing Institute of Technology, Chongqing 400050, China |
| Abstract: | The numerical simulation on vacuum electron beam deep penetration welding for AZ61 magnesium alloy sheet with 10 mm thickness was studied. In view of the thermal effect about metal steam plasma and keyhole deep penetration during vacuum electron beam welding,the moving heat source model composed by Gauss surface source and double ellipsoid body source was developed. And the characteristics of thermal cycle and weld appearance under different welding processes were studied on the basis of simulation and experiment values. The results of simulation and experiment show that the composite source model can gain the effect of deep penetration of electron beam welding and calculate the temperature distribution and the weld geometry under the action of electron beam source. The results also prove that the model is applicable to the thermal effect simulation on the electron beam welding of AZ61 magnesium alloy sheet. |
| Keywords: | magnesium alloy electron beam welding composite heat source weld appearance numerical simulation |
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