焊接热循环参数对微合金化钢热影响区晶粒的影响  

Effect of the parameters in Weld Thermal Cycle on HAZ Grain of Microalloy Steel

作　　者：张卫东[1] 卢文增[1] 洪永昌[1] 黄锡镐[2] 

机构地区：[1]华东冶金学院 [2]宝钢钢研所

出　　处：《华东冶金学院学报》1993年第3期58-62,共5页

摘　　要：研究了不同焊接热循环参数T_(max)及△t_(max/8)对微合金化钢热影响区奥氏体晶粒尺寸影响。结果表明,奥氏体晶粒尺寸随T_(max)增大而增;△t_(max/8)增大时,含微Ti的Nb-V钢(BB503)奥氏体晶粒尺寸变化平缓,而不含Ti的Nb钢(355与BB502)奥氏体晶粒尺寸粗化显著。This paper studies effect of two main parameters of welding thermal cycle. T_(max) and △t_(max/8) on Austenite grain size of HAZ in the field of microalloy steels. The results show that Austenite grain size increases with rise of T_(max) As △t_(max/8) increases, the change of Austenite grain size of Nb-V steel with a few of Ti is gradual. But it is obvious for Nb steel.

关 键 词：微合金化钢 焊接 热影响区 晶粒 

分 类 号：TG401[金属学及工艺—焊接]