New procedures for constitutive analysis (sinh-Arrhenius) and for flow curve calculation applied to 316 stainless steel

Abstract

A new procedure is presented for determining the Tanaka formulation of the constitutive equation representing the dependence of peak stress σ_p on temperature T and strain rate ε derived from torsion tests on 316 stainless steel: where α, n and T’ are constants. The peak strain ε_p is shown to be linearly dependent on σ_p. The flow curves up to the peak can be calculated by the equation where c is a constant evaluated as 0.193 and is associated with average errors of less than 2%. The constitutive constants are compared with those in the literature for similar stainless steels.

Keywords:

• constitutive analysis
• stress
• strain
• stainless steels

Additional information

Notes on contributors

H.J. McQueen

Authors

HJ. McQueen and N.D. Ryan are in the Department of Mechanical Engineering, Concordia University, Montreal, Canada H3G 1M8.

A. Cingara

A. Cingara is in the Department of Chemical Engineering, University of Novi Sad 21000, Yugoslavia.

N.D. Ryan

Authors

HJ. McQueen and N.D. Ryan are in the Department of Mechanical Engineering, Concordia University, Montreal, Canada H3G 1M8.