10CrNi3MoV钢焊接接头低温韧性的研究  

Research on Low Temperature Toughness of Welded Joints of 10CrNi3MoV Steel

作　　者：崔黎辉[1,2] 沈俊昶[2] 李才巨[1] 苏航[2] 田景云[2] 

机构地区：[1]昆明理工大学材料科学与工程学院,云南昆明6500093 [2]钢铁研究总院,北京100081

出　　处：《热加工工艺》2013年第3期191-192,195,共3页Hot Working Technology

摘　　要：通过对10CrNi3MoV钢焊接部位的组织观察,低温及系列温度冲击功和断口形貌的分析,结果表明该钢焊接接头的熔合线上平台冲击功在140J以上,上平台转变温度为-35℃,50%冲击功转变温度为-70℃。-50℃的冲击功分散度比较大,平均值为109J,-70℃冲击功平均值仍有80J以上。韧脆转变温度低于-70℃。By observing the microstructure of welding joints, and analysis of low-temperature impact energy, the series of temperature impact and the morphology of impact fracture, it can be obtained that the impact energy of the welded joints on the platform of the fusion line of 10CrNi3MoV steel is above 140 J. There is a stable platform at -35 ℃ and 50% impact energy transition temperature is -70 ℃. The impact energy dispersion is relatively large at -50 ℃that average wdue is 109J. The average of impact energy at -70 ℃ is above 80J and the ductile-brittle transition temperature is below -70 ℃.

关 键 词：冲击功 熔合线 HAZ 韧-脆转变温度 

分 类 号：TG142.1[一般工业技术—材料科学与工程]