18Ni马氏体时效钢高温变形本构关系研究  

Research on High Temperature Deformation Constitutive Relation of 18Ni Maraging Steel

作　　者：王凌旭 蒋欣 代发明 李妮[2] 赵飞[2] WANG Lingxu JIANG Xin DAI Faming LI Ni ZHAO Fei(Guizhou Electric Power Test Research Institute, Guiyang 550002, China Materials and Metallurgy College, Guizhou University, Guiyang 550025, China)

机构地区：[1]贵州电力试验研究院,贵州贵阳550002 [2]贵州大学材料与冶金学院,贵州贵阳550025

出　　处：《热加工工艺》2016年第19期153-155,共3页Hot Working Technology

基　　金：贵州省工业攻关项目(黔科合GY字(2011)3025);公司高校合作项目(gzdw SY[2014]0303HQ203)

摘　　要：为了研究热变形参数对马氏体时效钢高温变形行为的影响,利用Gleeble-3800热模拟机对18Ni(1700 MPa)马氏体时效钢在变形温度900~1050℃、应变速率0.001~1 s^(-1)、真应变1.2的热变形参数范围内进行了高温压缩试验。并基于Arrhenius双曲正弦模型,采用多元线性回归方法建立了18Ni(1700 MPa)马氏体时效钢的本构方程。结果能为该马氏体时效钢的数值模拟和热加工工艺的制定提供理论基础。In order to study the effect of thermal deformation parameter on the high temperature deformation behaviors of maraging steel, the high temperature compressive tests of 18Ni （1700 MPa） maraging steel were done by using Gleeble-3800 thermal simulation machine at 900-1050℃, strain rate of 0.001-1 s^-1 and true strain of 1.2. And based on the hyperbolic sine Arrhenius model, the constitutive equation of 18Ni （1700 MPa） maraging steel was established by using multiple linear regression method. The results can provide a theoretical basis for the numerical simulation and thermal processing of the maraging steel.

关 键 词：18Ni 马氏体时效钢 热压缩 ARRHENIUS 模型 本构方程 

分 类 号：TG314.3[金属学及工艺—金属压力加工] TG376.5