Abstract
1. A study was made of the kinetics of joint formation between a powder layer and a steel backing plate during static hot pressing. 2. It is demonstrated that the formation of such a joint is controlled by a dislocation climb mechanism leading to steady-state creep, in which the rate of deformation is a function of the fourth power of stress. 3. Estimates have shown that the energy of activation for steady-state creep in the process under consideration corresponds to either the energy of self-diffusion or the energy of vacancy motion. 4. It is demonstrated that the same phenomenon occurs in the main volume of a powder layer during densification and in the contact zone during the formation of a joint between a powder layer and a substrate.
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