The constitutive relationship for MP159 alloy, a kind of high strength cobalt-base superalloy, was studied based on the experimental results of compression tests carried out in the THERMECMASTER-Z hot work simulating ...The constitutive relationship for MP159 alloy, a kind of high strength cobalt-base superalloy, was studied based on the experimental results of compression tests carried out in the THERMECMASTER-Z hot work simulating test machine. The constitutive relationship model using Zener-Hollomon parameter as primary variable is proposed, and the constitutive equation for MP159 alloy is firstly form ulized. This equation well represents the relationship of flow stress with thermomechanical parameters, i.e. strain, strain rate and temperature, in a large deforma tion (a true strain of 1.10) and a wide range of deformation temperatures and strain rates. It can be used for the finite element simulation of plastic forming process and the dissipative structure theory and dynamic material展开更多
文摘The constitutive relationship for MP159 alloy, a kind of high strength cobalt-base superalloy, was studied based on the experimental results of compression tests carried out in the THERMECMASTER-Z hot work simulating test machine. The constitutive relationship model using Zener-Hollomon parameter as primary variable is proposed, and the constitutive equation for MP159 alloy is firstly form ulized. This equation well represents the relationship of flow stress with thermomechanical parameters, i.e. strain, strain rate and temperature, in a large deforma tion (a true strain of 1.10) and a wide range of deformation temperatures and strain rates. It can be used for the finite element simulation of plastic forming process and the dissipative structure theory and dynamic material
