基于JmatPro的热锻模具钢55NiCrMoV7热物理性能预测  

Prediction of Thermophysical Properties of Hot Forging Die Steel 55NiCrMoV7 Based on JmatPro

作　　者：尹慧 翟瑞志 滕树满 Yin Hui;Zhai Ruizhi;Teng Shuman(China second heavy machinery group Deyang Wanhang Die Forging Co.,Ltd.,Deyang,Sichuan 618000,CHN;Guangxi Liuzhou Iron and Steel Group Co.,Ltd,Liuzhou,Guangxi 545000,CHN)

机构地区：[1]中国第二重型机械集团德阳万航模锻有限责任公司,四川德阳618000 [2]广西柳州钢铁集团有限公司,广西柳州545000

出　　处：《模具制造》2022年第5期80-83,共4页Die & Mould Manufacture

摘　　要：基于材料热力学计算软件JMatPro 7.0对热锻模具用钢55NiCrMoV7的平衡相组成、CCT曲线等热物理参数性能进行了计算及预测,热力学计算结果表明:55NiCrMoV7的奥氏体化温度Ac_(1)=617.36℃,Ac_(3)=782.31℃。该钢的密度与杨氏模量与温度呈负相关趋势,而合金的热导率与泊松比则与温度呈现正相关趋势。并对该模具钢的TTA图CCT图进行了计算绘制,预测了马氏体转变温度等相关材料参数,还计算了不同冷却速度下的显微组织组成,以期为热锻模的热处理工艺提供基础材料参数。Based on the material thermodynamic calculation software JMatPro 7.0,the equilibrium phase composition,CCT curve and other thermophysical parameters of 55NiCrMoV7 steel for ho forging die are calculated and predicted.The thermodynamic calculation results show that the austenitizing temperature of 55NiCrMoV7 is Ac_(1)=617.36℃,Ac_(3)=782.31℃.The density and Young’s modulus of the steel have a negative correlation with temperature,while the therma conductivity and Poisson’s ratio of the alloy have a positive correlation with temperature.The paper also calculates and draws the TTA diagram and CCT diagram of the die steel,and predicts the martensite transformation temperature and other relevant material parameters,in order to provide basic material parameters for the heat treatment process of hot forging die.

关 键 词：55NiCrMoV7模具钢 JmatPro7.0 热物理性能 参数预测 

分 类 号：TG162[金属学及工艺—热处理] TG142[金属学及工艺—金属学]