摘要
After the discussion of a lot of constitutive equations,Zerilli-Armstrong cons titutive equation (Z-A equation) was found to be a quasi-static equation. Base d on this Z-A equation,a constitutive relations equation was constructed for dynamical calculation of fcc matels such as OFHC based on the thermal viscoplast ic relations,where thermal dynamical parameters are related to the evolution of the microstructure of the deforming metals,and the variation of the density of the mobile dislocation was also considered. Data from the deformation of anneal ed copper were used to fit the parameters in the equation. The predicting result s by using the constitutive equation are in good agreement with the experimental data.
After the discussion of a lot of constitutive equations,Zerilli-Armstrong cons titutive equation (Z-A equation) was found to be a quasi-static equation. Base d on this Z-A equation,a constitutive relations equation was constructed for dynamical calculation of fcc matels such as OFHC based on the thermal viscoplast ic relations,where thermal dynamical parameters are related to the evolution of the microstructure of the deforming metals,and the variation of the density of the mobile dislocation was also considered. Data from the deformation of anneal ed copper were used to fit the parameters in the equation. The predicting result s by using the constitutive equation are in good agreement with the experimental data.
出处
《中国有色金属学会会刊：英文版》
CSCD
2004年第4期775-778,共4页
Transactions of Nonferrous Metals Society of China
基金
Project(5 0 3 7110 6)supportedbytheNationalNaturalScienceFoundationofChina
关键词
应变速率
铜
晶体结构
退火
动力学
变形
fcc metals
dynamical calculation
constitutive relation
