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金属学报  2005 

基于串热源及CCT图的GMAW焊接热影响区组织及硬度预测

, PP. 839-846

Keywords: 熔化极气体保护焊,三维移动串热源

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Abstract:

将熔化极气体保护焊(GMAW)的热输入处理为三维移动串热源,建立了串热源模型,模拟了JG590低合金钢的GMAW焊接热过程.进行了JG590钢的GMAW焊接工艺实验,通过焊缝横截面熔合线的几何形状以及焊接接头的几何尺寸对所建模型进行了实验验证.分析评价了目前常用的t8/5计算公式,利用JG590钢GMAW焊接热过程的模拟结果,结合其连续冷却组织转变图(CCT图),成功预测了焊接热影响区(HAZ)的组织及硬度.

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