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Al-Si-Pb合金强流脉冲电子束表面改性过程的数值模拟分析
Numerical Simulation of Surface Modification Process by High Current Pulsed Electron Beam for Al-Si-Pb Alloy
【摘要】 在强流脉冲电子束改性实验基础上,通过数值计算方法对Al-Si-Pb合金的温度场和应力场进行模拟,给出了最先熔化的位置、形成熔坑的最大深度、熔化区的最大深度以及准静态热应力的分布。通过合金的数值模拟结果和实验结果对比,揭示了表面熔坑的形成机制和剖面硬度分布特征。
【Abstract】 Based on experimental investigation and physical models, the temperature field and stress field are simulated for Al-Si-Pb alloy. The starting melting position, the largest crater depth, the melting layer thickness, and the quasistatic stress distribution are obtained. These results reveal the mechanism of melt crater formation on the surface and the hardness characteristics along the depth.
【关键词】 Al-Si-Pb合金;
强流脉冲电子束;
数值模拟;
熔坑;
准静态热应力;
【Key words】 Al-Si-Pb alloy; high current pulsed electron beam; numerical simulation; melt crater; quasistastic stress;
【Key words】 Al-Si-Pb alloy; high current pulsed electron beam; numerical simulation; melt crater; quasistastic stress;
【基金】 国家自然科学基金项目资助(50375063)
- 【文献出处】 稀有金属材料与工程 ,Rare Metal Materials and Engineering , 编辑部邮箱 ,2007年07期
- 【分类号】TH142.2
- 【被引频次】12
- 【下载频次】170