摘要
采用 Gleeble-1500热模拟试验机对25 MnCrNiMoA钢的流动应力行为进行等温压缩研究,在应变量为0．6,变形温度为700～1200℃,变形速率为0．1,1和10 s-1下的等温压缩实验.根据实测数据与应力-应变曲线,分析流动应力与变形量、变形温度以及变形速率之间的关系,建立了该种材料在高温状态下金属流动的力学模型.对该力学模型进行非线性回归,求出相关系数,通过分析模型的残差,说明该模型拟合特性良好.
The flow stress behavior of 25MnCrNiMoA steel was studied by isothermal compression test at Gleeble-1500 thermal-mechnical simulator.The test condition were at degree of deformation for 0.6,tempera-ture of deformation for 700-1 200 ℃ and rate of deformation for 0.1,1,10 s-1 .Based on the experiment data and stress-strain curve,analysis the relationship of the flow stress between degree of deformation,temperature of deformation and rate of deformation.Under this relationship,a mechanical model of the material which metal flowed in hot temperature was established.Then nonlinear regression the mechanics model and correlation the coefficient.Through the analysis model of residuals,to explain the model fitting characteristics was well.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2014年第5期5122-5125,共4页
Journal of Functional Materials
