Q345R+12Cr2Mo1R异种钢焊接及热处理试验研究  

Experimental Study on Welding and Heat Treatment of Q345R+12Cr2Mo1R Dissimilar Steel Welded Joint

作　　者：林桂贤 李义民 朵元才 张伟 Lin Guixian;Li Yimin;Duo Yuancai;Zhang Wei(Lanzhou LS Heavy Equipment Co.,Ltd.,Lanzhou 730314,China;Pressure Vessel Special Material Welding Key Lab Cuitivation Base of Gansu Province,Lanzhou 730314,China)

机构地区：[1]兰州兰石重型装备股份有限公司,兰州730314 [2]甘肃省压力容器特种材料焊接重点实验室培育基地,兰州730314

出　　处：《压力容器》2020年第6期15-18,共4页Pressure Vessel Technology

摘　　要：利用常温拉伸(R m)、硬度(HV10)、低温冲击测试(-20℃,KV 2)及金相组织分析等测试方法,研究了690℃热处理温度对Q345R+12Cr2Mo1R异种钢焊接接头组织力学性能及金相组织的影响,并对影响机理进行了简要分析。研究表明,在选用了适当的焊材、严格执行焊接工艺的情况下,异种钢焊接接头的各项性能符合相关标准要求,可以支持Q345R+12Cr2Mo1R材质产品进行整体热处理,缩短产品制造周期。Normal temperature tensile(R m),hardness(HV10),charpy impact(-20℃,KV 2)and micro-structure analysis are utilized in this paper to study the effects of 690℃heat treatment temperature on mechanical properties and micro-structures of dissimilar welded joints of Q345R+12Cr2Mo1R,and the influence mechanisms are analyzed briefly.The research shows that provided appropriate welding consumables are selected and welding procedures are strictly implemented during the welding of dissimilar materials,the mechanical and other properties(if required)gained from the testing can meet relevant technical requirements,which can support overall post-heat treatment of Q345R+12Cr2Mo1R materials,and reduce the manufacturing period of products at the same time.

关 键 词：异种钢焊接 热处理 力学性能 金相组织 

分 类 号：TH140.7[一般工业技术—材料科学与工程] TG115.6[机械工程—机械制造及自动化]