焊接热处理对建筑用管线钢接头性能的影响  

Effect of Weld Heat Treatment on Joint Properties of Pipeline Steel Used for Building

作　　者：王永健[1] 

机构地区：[1]重庆工业职业技术学院机械工程学院,重庆401120

出　　处：《铸造技术》2014年第11期2685-2687,共3页Foundry Technology

基　　金：重庆市教委科研基金资助项目(KJ101504)

摘　　要：以建筑用管线钢为研究对象,研究了建筑用管线钢在不同焊接热输入条件下的显微组织、强度韧性等力学性能。结果表明,当焊接热输入为14 642 J/cm时,焊接接头的综合力学性能最好。焊接接头的力学性能随着焊接热输入的减少而提高,焊接局部发生脆化现象。Taking pipeline steel used for building as research object, the microstructure and mechanical properties of pipeline steel under different welding heat input conditions were studied. The results show that, when welding heat input is14 642 J/cm, the comprehensive mechanical properties of welding joint are best. The mechanical properties of welding joint improve with the decrease of welding heat input, and the embrittlement phenomenon occurs in part zone.

关 键 词：焊接 管线钢 强韧性 

分 类 号：TG457.6[金属学及工艺—焊接]