原始组织状态对12Cr1MoVG钢再热裂纹敏感性影响  

Effect of the original microstructure on the reheated cracks sensitivity of 12Cr1MoVG steel

作　　者：尚建路 石云哲 吕一仕[1] 刘肖[1] 成鹏[1] 王淦刚[1] 赵建仓[1] 

机构地区：[1]苏州热工研究院有限公司,江苏苏州215004

出　　处：《机械制造文摘（焊接分册）》2015年第5期31-35,共5页Welding Digest of Machinery Manufacturing

摘　　要：采用插销试验的方法研究不同贝氏体含量的12Cr1MoVG钢对再热裂纹敏感性的影响,结果表明在试验温度范围内,两种原始组织状态不同的12Cr1MoVG钢随着试验温度的升高,其临界断裂初应力呈现先下降后上升的基本趋势,原始组织状态为铁素钵+贝氏体组织的12Cr1MoVG钢的再热裂纹最敏感温度高于原组织粒状贝氏体组织+少量铁素体的再热裂敏感温度。In this paper, the effect of different Bayesian content on reheat crack sensitivity of 12CrlMoVG steel by implant test method is studied. The results show that within the experimental temperature range, The Critical initial stress shows a trend of rising after the first fall with the increase os the test temperature of 12Crl MoVG steel with two kinds of original microstructure. The temperature of reheating crack of the 12CrlMoVG steel with ferrite and bainite microstructure is higher than that of granular bainite and a small amount of ferrite.

关 键 词：12Cr1MoVG钢 插销试验 贝氏体 再热裂纹 组织 

分 类 号：TG457.11[金属学及工艺—焊接]