V-N微合金化CrSiMn系低合金铸钢中的析出行为  

Precipitation behavior in V-N microalloyed CrSiMn low alloy cast steel

作　　者：王晓东 陈蕴博[1] 左玲立[1] 游龙[2] 陈冲[2] 毛丰 张峻嘉 Wang Xiaodong;Chen Yunbo;Zuo Lingli;You Long;Chen Chong;Mao Feng;Zhang Junjia(China Academy of Machinery Science and Technology Group Co.,Ltd.,Beijing 100083,China;National Joint Engineering Research Center for Abrasion Control and Molding of Metal Materials,Henan University of Science and Technology,Luoyang Henan 471000,China;Liaoning Key Laboratory of Lightweight Metal Structural Materials,School of Materials Science and Engineering,Northeastern University,Shenyang Liaoning 110819,China)

机构地区：[1]机械科学研究总院,北京100083 [2]河南科技大学金属材料磨损控制与成型技术国家地方联合工程研究中心,河南洛阳471000 [3]东北大学材料科学与工程学院辽宁省轻量化用关键金属结构材料重点实验室,辽宁沈阳110819

出　　处：《金属热处理》2021年第8期15-20,共6页Heat Treatment of Metals

摘　　要：利用JMat Pro热力学模拟软件对V-N微合金化Cr Si Mn系低合金铸钢进行了计算,得到了不同V含量铸钢的平衡相组成,着重研究了平衡状态下各析出相的析出行为。结果表明,在加热过程中,V含量的增加将增大铁素体向奥氏体的转变阻力;V含量对微合金化渗碳体及M7C3型碳化物的析出行为影响不大;V含量对氮化物及碳氮化物的析出有较大影响,当V含量由0增加至0.18%(质量分数)时,氮化物及碳氮化物的初始析出温度由734.2℃提升至1133.93℃,最大析出量(质量分数)由0.07%提升至0.24%。V-N microalloyed CrSiMn low alloy cast steel was calculated by means of JMatPro software,the equilibrium phase composition of the cast steel with different V contents was obtained.The precipitation behavior of each precipitated phases in the microalloyed steel at equilibrium state was emphatically studied.The results show that during the heating process,the increase of V content promotes the phase transformation resistance of ferritic to austenite.The V content has little influence on precipitation behavior of cementite and M7 C3.The content of V has a great influence on precipitation of nitrides and carbonides.When V content increases from 0 to 0.18%(mass fraction),the initial precipitation temperature of nitrides and carbonides increases from 734.2℃to 1133.93℃,and the mass fraction of the maximum precipitation amount increases from 0.07%to 0.24%.

关 键 词：微合金化 JMatPro 铸钢 析出行为 

分 类 号：TG142.1[一般工业技术—材料科学与工程]