65Mn钢连续冷却转变动态CCT曲线及组织  

Continuous cooling transformation dynamic CCT curve and microstructure of 65Mn steel

作　　者：陈连生[1] 柳松[1] 田亚强[1] 宋进英[1] 

机构地区：[1]河北联合大学冶金与能源学院,河北唐山063009

出　　处：《金属热处理》2012年第6期10-13,共4页Heat Treatment of Metals

基　　金：河北省自然科学基金项目(E2009000791)

摘　　要：利用膨胀法结合金相-硬度法,在Gleeble-3500热模拟机上测定了65Mn钢连续冷却转变动态CCT曲线;研究了冷却速度对组织的影响。结果表明,当冷却速度小于10℃/s时,转变产物为铁素体和珠光体;当冷却速度为10～40℃/s时,转变产物是铁素体、珠光体和马氏体;当冷却速度大于40℃/s时,转变产物为完全马氏体组织。Continuous cooling transformation dynamic CCT curve of 65Mn steel was measured using Gleeble-3500 thermal mechanical simulator by expansion method and metallography hardness method. Effect of colling rate on the microstructure of the steel was analysed. The results show that the austenite transformation products are ferrite and pearlite when the cooling rate is lower than 10 ℃/s. Those will be ferrite, pearlite and martensite when the cooling rate is in the range of 10-40 ℃/s and those will be totally martensite if the cooling rate is higher than 40 ℃/s.

关 键 词：65MN钢 动态CCT曲线 热模拟 显微组织 

分 类 号：TG156.1[金属学及工艺—热处理] TG113.12[金属学及工艺—金属学]