A model for the calculation of mechanical strength during annealing in precipitae hardening copper alloy

A model for the calculation of mechanical strength based on the results tha t calculated from precipitation and recrystallization models proposed by au thors, were used to simulate the variation of yield strength during a annea ling process. The simulated results were compared with experimental results for a Cu-Cr alloy. The calculation is based on the solid state strengtheni ng theories. In the calculation model, four types of strengthening mechanis ms; (1) precipitation hardening, (2) grain fined hardening, (3) solute solu tion hardening, and (4) work hardening, were considered. In the precipitati on hardening model, three types of mechanisms; (1) coherent strain hardenin g, (2) ordering haedening and (3) bypassing hardening, were calculated. By adopting the minimum values in calculation results at various types of prec ipitation hardening mechanisms for the calculation of yield strength, it wa s confirmed that the results based on the calculation were in good agreemen t with ones based on the experiments.