High temperature flow stress model and hot deformation behaviors of high Mo austenitic stainless steel

摘要

Single stage and double stage interrupted hot compression tests on the Thermecmastor-Z simulator for physical simulating hot rolling have been carried out for a 00Cr20Ni18Mo6Cu[N] austenitic stainless steel under the high temperature range from 1223 to 1373 K and various strain rates. The dynamic and static mechanical behavior and microstructure evolution of the steel were studied. The deformation activation energies of dynamic, static and metadynamic recrystallization were calculated. A serials of perfect flow stress models considering dynamic recrystallization were established. The predicted results agree well with the experiment data. Kinetic modeling of metadynamic and static recrystallization has also been determined.