Investigation on Hot Deformation Behavior of 430 Ferritic Stainless Steel
The hot deformation behavior and microstructure evolution of 430 ferritic stainless steel (430 FSS) were investigated within the temperature range of 950°C~1150°C at the strain rate of 0.01 s-1, 0.1 s-1, and 1.0 s-1 using a thermo-mechanical simulator. The effects of temperature and strain rate on the flow behavior and microstructures of 430 ferritic stainless steel at reduction ratio 50 % were analyzed. Results indicated that the apparent stress exponent and the apparent activation energy of the steel were about 1.08 and 344 kJ/mol, respectively. The hot deformation equation of 430 was considered as. There was a relationship between the softening mechanism and Zener-Hollomon parameter (abbreviated Z). With the Z value increasing from 4.30×1010 to 5.00×1014, the hot deformation peak stress correspondingly increased from 10.74 MPa to 76.02MPa.
J. B. Zhang et al., "Investigation on Hot Deformation Behavior of 430 Ferritic Stainless Steel", Advanced Materials Research, Vol. 721, pp. 82-85, 2013