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

Communication sans acte
Author
LE MERCIER, Kévin
WATREMEZ, Michel
GUERIN, Jean-Daniel
FOUILLAND-PAILLE, Laurence
211915 Mechanics surfaces and materials processing [MSMP]
DUBAR, Laurent

URI
http://hdl.handle.net/10985/7316
Date
2013

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.

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