Effect of stacking fault energy on Hall-Petch relationship parameters of austenitic stainless steels

Abstract

Influence of stacking fault energy on parameters of Hall-Petch relationship was analyzed. It was shown that dependence of a yield strength on the grain size for AISI 316 and AISI 321 austenitic stainless steels with different stacking-fault energies obeys Hall-Petch relationship. Parameters of Hall-Petch relationship depend on stacking fault energy (chemical composition) of the steel, which influences the peculiarities of dislocation arrangement. AISI 321 steel with lower value of stacking fault energy demonstrates higher value of Hall-Petch coefficient in comparison with AISI 316 steel with higher stacking fault energy.