电子束焊接析出硬化CuCrZr合金:模拟与实验（英文）

发布时间：2021-06-01 05:29

　　为了在焊接析出硬化铜铬锆（PH-CuCrZr）合金时保持结构的一致性,采用电子束焊接（EBW）工艺。对PH-CuCrZr合金零件的EBW过程进行实验研究和数值模拟,建立三维有限元模型,以预测输出响应（焊道熔透和焊道宽度）与EBW输入参数（电子束电流、加速电压和焊接速度）之间的函数关系。采用一种具有高斯热分布的圆形、园锥形复合热源模拟EBW过程的深熔焊特性。在Ansys软件中开发用户自定义函数,进行数值模拟。将数值模拟结果与实验结果进行比较,两者吻合较好。所建模型可用于EBW过程中广泛涉及复杂几何形状问题的参数研究。输入电流是对焊道熔透和焊道宽度影响最大的输入参数,其贡献率分别为44.56%和81.13%。 

【文章来源】：Transactions of Nonferrous Metals Society of China. 2020,30(08)EISCICSCD

【文章页数】：14 页

【文章目录】：
1 Introduction
2 Finite element formulation of electron beam welding process
    2.1 Governing equation and heat source model
    2.2 Geometric modeling
    2.3 Material properties
    2.4 Boundary conditions
3 Simulation of moving heat source
    3.1 Thermal analysis of PH-CuCrZr alloy(spot welding)
    3.2 Thermal analysis of PH-CuCrZr alloy(moving heat source)
4 Experimental
5 Results and discussion
    5.1 Validation of developed numerical thermal model
    5.2 Analysis of variance
    5.3 Effect of beam current
    5.4 Effect of weld speed
    5.5 Effect of accelerating voltage
6 Conclusions


【参考文献】：
期刊论文
[1]2219铝合金板电子束焊接过程热流传输行为的数值分析（英文）[J]. 刘成财,何景山.  Transactions of Nonferrous Metals Society of China. 2017(06)
[2]Microstructure and Mechanical Properties of a CuCrZr Welding Joint After Continuous Extrusion[J]. Hui Feng,Haichang Jiang,Desheng Yan,Lijian Rong.  Journal of Materials Science & Technology. 2015(02)



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