The effect of mechanical activation on the heat capacity of powdered tungsten

We have studied the heat capacity $(C_p)$ of a mechanically activated tungsten powder. It is established that the mechanical processing leads to an increase in $(C_p)$ of the metal powder at low temperatures and modifies the character of the temperature dependence of this parameter. The dependences of $(C_p)$ and its heating-induced variation on the treatment duration have been determined. It is concluded that the observed effects are related to the accumulation of defects in the metal grain volume during mechanical activation and their annealing in the course of heating.