Strain rate sensitivity behaviour of Fe–21Cr-1.5Ni–5Mn alloy and its constitutive modelling

In the present investigation, hot deformation behaviour of Fe–21Cr-1.5Ni–5Mn alloy was studied by performing isothermal unidirectional hot compression tests. The tests were carried out at strain rates of 0.01, 0.1, 1, 5 and 10 s−1 and at temperatures of 675, 750, 825, 900, 975 and 1050 °C. The samples were deformed up to 50% height reduction (ε = 0.7). The flow softening behaviour was modelled using Arrhenius hyperbolic sine law approach. The...