采用考虑高温蠕变的粘弹塑性有限元等数值方法与实验相结合 ,对具有初始焊接残余应力的管子在不同热处理条件下进行了分析 ,特别是对局部焊后热处理加热宽度的确定进行了研究 .提出了 2个局部焊后热处理的评定准则 ,即基于残余应力消除效果的残余应力准则和基于改善焊接接头性能的均热区温差准则 .局部焊后热处理应同时满足这两个准则的条件 . The viscoelasto-plastic finite element method considering the high-temperature creep and other numerical methods are combined with the experiments to analyze the pipe with initial welding residual stress under different heat treatment conditions, especially the determination of the heating width of the local post-weld heat treatment The criteria for the evaluation of two local post-weld heat treatments are proposed, that is, the residual stress criterion based on the effect of residual stress elimination and the temperature difference criterion of soaking zone based on the improved weld joint performance.