Effect of pressure on the lifetime and the creep of metals and the kinetic equation parameters

The effect of uniform pressure on the activation parameters of the kinetic equation that describes the exponential dependence of the steady-state creep rate and the lifetime of polycrystalline metals on stress and temperature is estimated. It is shown that, under pressure, the parameters that determine the behavior of a metal under load are the activation energy and the internal stresses. The dependence of these parameters on the applied pressure is revealed.