為了在焊接析出硬化銅鉻鋯（PH-CuCrZr）合金時(shí)保持結(jié)構(gòu)的一致性,采用電子束焊接（EBW）工藝。對(duì)PH-CuCrZr合金零件的EBW過(guò)程進(jìn)行實(shí)驗(yàn)研究和數(shù)值模擬,建立三維有限元模型,以預(yù)測(cè)輸出響應(yīng)（焊道熔透和焊道寬度）與EBW輸入?yún)?shù)（電子束電流、加速電壓和焊接速度）之間的函數(shù)關(guān)系。采用一種具有高斯熱分布的圓形、園錐形復(fù)合熱源模擬EBW過(guò)程的深熔焊特性。在Ansys軟件中開(kāi)發(fā)用戶(hù)自定義函數(shù),進(jìn)行數(shù)值模擬。將數(shù)值模擬結(jié)果與實(shí)驗(yàn)結(jié)果進(jìn)行比較,兩者吻合較好。所建模型可用于EBW過(guò)程中廣泛涉及復(fù)雜幾何形狀問(wèn)題的參數(shù)研究。輸入電流是對(duì)焊道熔透和焊道寬度影響最大的輸入?yún)?shù),其貢獻(xiàn)率分別為44.56%和81.13%。 

【文章來(lái)源】：Transactions of Nonferrous Metals Society of China. 2020,30(08)EISCICSCD

【文章頁(yè)數(shù)】：14 頁(yè)

【文章目錄】：
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


【參考文獻(xiàn)】：
期刊論文
[1]2219鋁合金板電子束焊接過(guò)程熱流傳輸行為的數(shù)值分析（英文）[J]. 劉成財(cái),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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