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Measurement of welding residual stress in high strength steel D406A
Author(s): 
Pages: 50-51
Year: Issue:  2
Journal: WELDING TECHNOLOGY

Keyword:  D406A高强钢残余应力局部热处理整体退火;
Abstract: 采用小孔测试法,对D406A低合金高强钢钨极氩弧焊及不同热处理状态下的残余应力进行了测试研究.结果表明:D406A低合金高强钢钨极氩弧焊在焊缝及其附近会产生约460MPa的残余应力;采用650℃下保温10 min的局部热处理是较为合理的工艺,可达到整体去应力退火的效果,而且可以避免焊接工件表面严重脱碳、降低焊接结构强度的危害.
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