Damage of metallic materials during high-temperature creep

A.R. Arutyunyan, St. Petersburg State University, Russia, R.A. Arutyunyan, R.R. Saitova, St. Petersburg State University, Russia, St. Petersburg State University, Russia
2019 Physical-Chemical Kinetics in Gas Dynamics  
In the conditions of high-temperature creep, the evolution of damage of metallic materials is occurred. For its description, the damage conception of Kachanov -Rabotnov is used. In this paper the damage parameter is defined as the relative changes of the material density, which is an integral measure of the damage. Taking into account this parameter and the mass conservation law, interrelated kinetic equations for creep deformation and damage parameter are formulated.
doi:10.33257/phchgd.20.3.815 fatcat:2setwnjokzgwxj643h5nnx4cnu