Mechanical response of a metastable austenitic stainless steel under different deformation modes

Abstract

The deformation behaviour of AISI 304L stainless steel was examined under uniaxial tension and shear deformation modes in the temperature range of 0–500°C. A linear relationship between the tensile and shear yield stresses was observed over the whole temperature range, which was in a good agreement with the predictions of the von-Mises criterion. The relationship between the ultimate shear and tensile strength values, however, showed three distinct temperature-dependent regimes. In the temperature ranges corresponding to the transformation-induced plasticity effect and the dynamic strain aging phenomenon, a deviation from the expected behaviour was observed, which was related to the dependency of these phenomena on the loading mode.

KEYWORDS:

• Metastable austenitic steel
• shear punch test
• tensile test
• TRIP effect
• dynamic strain aging

Disclosure statement

No potential conflict of interest was reported by the author(s).