Deformation resistance of metals as a result of self-organization of a system. Communication 1. On a role of grain boundaries in formation of metal properties

A new approach to the estimation of grain boundary contribution to formation of metal and alloy properties if proposed. The metal, both deformed and annealed, is considered as a self-organized system. Dissipative structures grain boundaries included exist in the material in initial undeformed state. Evaluation technique for interface induced stresses is suggested. Possible reasons for serrated yielding are discussed. Comparison of calculated and experimental data is made for nickel and austenitic steel. 16 refs., 2 figs