Weld thermal cycle simulation was used to reproduce the structure in the HAZ of single run and multi-layer welding.
采用焊接热模拟再现了单道焊和多层焊haz的组织。
The influence of welding thermal cycle on structure and properties in grain-coarsening region of X80 pipeline steel was investigated by weld thermal simulation technique and the charpy test.
采用焊接热模拟试验和冲击试验，研究了X80管线钢焊接热循环对粗晶区组织性能的影响。
The toughness of weld metal is the highest while the coarse grained region in the HAZ is the lowest because of welding thermal cycle and formation of brittle microstructure.
试验钢由针状铁素体和少量块状铁素体组成，焊缝为典型的针状铁素体组织，焊接热影响区粗晶区以粒状贝氏体为主。
The microstructures of weld metal and HAZ under different thermal cycle are analyzed correspondingly.
分析了在不同焊接热循环条件下相应的部分易淬火钢焊缝及热影响区的显微组织。
The microstructures of weld metal and HAZ under different thermal cycle are analyzed correspondingly.
分析了在不同焊接热循环条件下相应的部分易淬火钢焊缝及热影响区的显微组织。
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