The deformation behavior of dispersion-strengthened copper with different compositions was investigated by hot compression simulation tests on a Gleeble-1500 thermal-mechanical simulator. The microstructure during def...The deformation behavior of dispersion-strengthened copper with different compositions was investigated by hot compression simulation tests on a Gleeble-1500 thermal-mechanical simulator. The microstructure during deformation at high temperature was also studied. The result shows that at the beginning of hot compression simulation, the flowing stress of the dispersion-strengthened copper quickly attains a peak value and the stress shows a greater decrease when the temperature is higher and the strain rate is lower. The dispersion particles lead to an obvious increase in the recrystallization temperature. Under experimental conditions, dynamic recovery is the main softening method. The constitutive equation at high temperature of 1.2%Al2O3-0.4%WC/Cu is obtained.展开更多
In the last decade,the idea of planetary,global citizenship has strengthened,which implies pluralism,difference;it is a new model of citizenship fully aware of human dignity,a value proper to all people that gives the...In the last decade,the idea of planetary,global citizenship has strengthened,which implies pluralism,difference;it is a new model of citizenship fully aware of human dignity,a value proper to all people that gives them the inalienable right to live free and to develop in the various constitutive dimensions of the human being,of the individual’s belonging to a community local and global.展开更多
文摘The deformation behavior of dispersion-strengthened copper with different compositions was investigated by hot compression simulation tests on a Gleeble-1500 thermal-mechanical simulator. The microstructure during deformation at high temperature was also studied. The result shows that at the beginning of hot compression simulation, the flowing stress of the dispersion-strengthened copper quickly attains a peak value and the stress shows a greater decrease when the temperature is higher and the strain rate is lower. The dispersion particles lead to an obvious increase in the recrystallization temperature. Under experimental conditions, dynamic recovery is the main softening method. The constitutive equation at high temperature of 1.2%Al2O3-0.4%WC/Cu is obtained.
文摘In the last decade,the idea of planetary,global citizenship has strengthened,which implies pluralism,difference;it is a new model of citizenship fully aware of human dignity,a value proper to all people that gives them the inalienable right to live free and to develop in the various constitutive dimensions of the human being,of the individual’s belonging to a community local and global.
