Modelling of changes in properties of alloys at elevated temperatures

摘要: Abstract Long-term exposures of heat-treated metals at sufficiently elevated temperatures (e.g. tempering quenched steels or age-hardening supersaturated solid solutions) cause substantial changes in their structures and, consequently, physical and materials properties. These processes are different principle but temporal development as well temperature dependence can be modelled by similar types equations. Their kinetics is generally described the Johnson–Mehl–Avrami–Kolmogorov equation, Arrhenius equation expresses dependence. The paper presents another way more deeply respecting scheme proceeding studied materials, which leads to precise description. modelling presented for two cases: bearing beryllium bronze.