Thermo-mechanical behaviour of spheroidal graphite iron in the austenitic phase

Abstract

The main objective of this paper is to identify the thermo-mechanical behaviour at high temperature of the spheroidal graphite (SG) iron EN-GJS-700-2. In the rst instance, tensile and compression tests in austenitic phase are performed. These experiments are carried out using Gleeble 3500 system enabling a precise control on testing temperature and strain rate. Indeed, the e ects of these testing parameters on the SG iron behaviour are studied. Furthermore, a numerical inverse method is used to identify the Johnson-Cook constitutive model of this iron. Finally, post-mortem metallography of specimens is analyzed using optical microscopy.