RESEARCH ON LAW OF DEFORMATION OF 9Cr-1Mo-V-Nb-N STEEL UNDER HI-TEMPERATURE

With a Gleeble-1500 thermal simulator,research was made on the recrystallization behavior of the 9Cr-1Mo-V-Nb-N ferrite heat resistant steel under the deformation conditions,i.e.temperature range of 850~1 250℃ and deformation rate of 0.01~10s^-1.As a result,the boundary conditions under which recrystallization of the said steel occurs during thermal deformation thereof was obtained and the plasticity chart and the recrystallization chart produced.