摘要
根据TIG焊接和激光-TIG复合热源焊接的物理特征,建立了基于TIG焊接过程的高斯面热源模型和基于激光-TIG复合热源焊接的新型双热源模型,分析了两种焊接方法对应的热源模型的特点。在此基础上,针对镁合金AZ31B,进行了单独TIG焊接和复合热源焊接温度场数值模拟及焊缝区微观组织分析,提出了其热源模型建立过程中的参数修改建议。通过与实测结果比较,表明以上建立的两种热源模型能准确地模拟镁合金AZ31B的单独TIG焊过程和复合焊接过程。
The moving Gauss heat source model based on tungsten-arc intert-gas （TIG） welding and a three-dimensional rotary Gaussian volumetric heat source model based on laser-TIG hybrid welding were developed by finite element analysis （FEA）according to the physical characteristic of TIG welding and laser-TlG hybrid welding. Taking into account the advice of parameters modification, the welding temperature fields of single TIG welding and hybrid welding for AZ31B magnesium alloy were simulated and the microstructure of weld area was analysed. Compared with the measured value, the two heat source models can simulate eractly the process of single TIG welding and hybrid welding for AZ31B magnesium alloy.
出处
《热加工工艺》
CSCD
北大核心
2008年第13期82-84,共3页
Hot Working Technology
基金
唐山市科学技术及发展计划项目(05204501A-B4)
