重型机械Issue(6)：63-68,6.
高温热处理对12Cr1MoV钢焊接接头开裂的影响
The effect of heat treatment temperature on welding joint cracking of steel 12Cr1MoV
摘要
Abstract
12Cr1MoV steel is widely used in superheater tubes of subcritical and thermal power units,and is often used as the material for main steam pipes.Fatigue cracking at the welded joints is the main cause of their failure.To address the issue of local cracking at the welds under service loads,three-point bending tests and ABAQUS simulations were conducted on samples heat treated at 730℃and 660℃respectively.The research results show that compared with heat treatment at 730℃,isothermal treatment at 660℃is more likely to enhance the brittleness of the weld microstructure,causing cracking to occur preferentially at the fusion line.The research results are greatly significance for optimizing the welding process of 12Cr1MoV steel and preventing failure risks.关键词
12Cr1MoV钢/焊接接头/三点弯曲/开裂/焊缝熔合线Key words
12Cr1MoV steel/welded joints/three-point bending test/cracking/weld-fusion line分类
矿业与冶金引用本文复制引用
杜晋峰,乔湛,刘福广,张周博,林何,成小乐..高温热处理对12Cr1MoV钢焊接接头开裂的影响[J].重型机械,2025,(6):63-68,6.基金项目
国家能源集团"基于高温微区应变测量的重要金属部件在线监测与安全性智能评价系统开发及应用"(GJNY-21-176) （GJNY-21-176）
