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

Kevin Le Mercier (1) , Michel Watremez (1) , Jean-Daniel Guerin (1) , Laurence Fouillaud (2) , Laurent Dubar (1)

1 UVHC - Université de Valenciennes et du Hainaut-Cambrésis
2 MSMP - Mechanics surfaces and materials processing

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.

Mots clés: SG iron; Thermo-mechanical behaviour; Gleeble

Domaines: Mécanique [physics.med-ph]; Mécanique des matériaux [physics.class-ph]; Mécanique des matériaux [physics.class-ph]

Kevin Le Mercier, Michel Watremez, Jean-Daniel Guerin, Laurence Fouillaud, Laurent Dubar. Thermo-mechanical behaviour of spheroidal graphite iron in the austenitic phase. Congrès Français de Mécanique (21 ; 2013 ; Bordeaux), Aug 2013, France. ⟨hal-00863411⟩