This equation I wished to fit in true stress strain curve of 17-4 PH SLS. σ = σy + q*(1-exp(-b*ϵ)). In this equation, σy is the initial yield strength and q, b are material constants. Nobody has reported fitting of voce law in case of PH stainless steel and in case of other stainless steel also, some other form of voce hardening law is fitted. My question is how to find the correct range of material parameter in case of 17-4 PH stainless steel. Kindly reply as soon as possible.
The following papers may be useful to you.
R. Andersson, M. Syk, J. Powell, et al. Development of high strain rate equations for stainless steels. J. of Materi Eng and Perform 14, 553–562 (2005).
V. Shiva, Sunil Goyal, R. Sandhya, K. Laha, A. K. Bhaduri, Flow Behaviour of Modified 9Cr–1Mo Steel at Elevated Temperatures, Trans Indian Inst Met (2017) 70(3):589–596
B.K. Choudhary, E.I. Samuel, K. Bhanu Sankara Rao & S.L. Mannan (2001) Tensile stress–strain and work hardening behaviour of 316LN austenitic stainless steel, Materials Science and Technology, 17:2, 223-231
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