材料期刊网

Theoretical expressions of the dependence of the jog concentration and the secondary minimum creep rate on stacking-fault energy during recovery creep have been developed. They are the same as the empirical formulae given recently for nickel solid solutions. An important characteristic of the present expressions is that the index of the power function related to stacking-fault energy is a function of the shear modulus, Burgers vector, Poisson's ratio and creep temperature. For 18 materials, the theoretical values of this index are in good agreement with the corresponding experimental results.