| Ti3Al金属间化合物电子束深熔焊接过程数值模拟 |
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| 引用本文： | 吴会强,冯吉才,何景山,张秉刚.Ti3Al金属间化合物电子束深熔焊接过程数值模拟[J].焊接学报,2005,26(2):1-4. |
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| 作者姓名： | 吴会强 冯吉才 何景山 张秉刚 |
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| 作者单位： | 哈尔滨工业大学,现代焊接生产技术国家重点实验室,哈尔滨,150001 |
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| 基金项目： | 国家863计划资助项目(200AA305402) |
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| 摘 要： | 基于有限元法，采用改进的双椭球热源模型，对电子束深熔焊接Ti3Al过程进行了移动热源条件下准稳态三维温度场的数值模拟。该模型复合了熔深与电子束参数及材料性质的关系，考虑了对流和辐射散热、相变潜热、材料热物理性能参量随温度的变化以及液态金属的对流传热。通过比较熔深、熔宽的计算值和实际测量值，验证了该模型在电子束焊接温度场模拟中的适用性。
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| 关 键 词： | Ti3Al 电子束焊接 有限元 数值模拟 |
| 文章编号： | 0253-360X(2005)02-01-04 |
| 收稿时间： | 2004/3/24 0:00:00 |
| 修稿时间： | 2004年3月24日 |
Numerical simulation of deep penetration in electron beam welding of Ti3Al intermetallic compound |
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| WU Hui-qiang,FENG Ji-cai,HE Jing-shan and ZHANG Bing-gang.Numerical simulation of deep penetration in electron beam welding of Ti3Al intermetallic compound[J].Transactions of The China Welding Institution,2005,26(2):1-4. |
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| Authors: | WU Hui-qiang FENG Ji-cai HE Jing-shan and ZHANG Bing-gang |
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| Affiliation: | National Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China,National Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China,National Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China and National Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China |
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| Abstract: | Three-dimensional quasi-steady temperature field numerical simulation of deep penetration in electron beam welding of Ti3Al intermetallic compound was conducted on condition of moving heat soure using modified double ellipsoidal mathematical model on basis of finite element method. In the model, the relationship between deep penetration and electron beam process parameter, material thermal physical properties and the convection and radiation effect, the latent heat of phase transformation , the temperature dependence of thermal physical properties and the convection heat transfer in the welding pool were considered. The simulation results showed a good agreement with the experimental results to confirm adaptability of the new model. |
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| Keywords: | Ti3Al electron beam welding finite element numerical simulation |
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