Dynamic recrystallization of spheroidal graphite iron during hot cutting operations.
Communication avec acte
Résumé
The objective of the present paper is to analyse the dynamic recrystallization process occurring during the hot cutting of spheroidal graphite iron. In the first instance, hot cutting tests are performed with an orthogonal cutting test bench. The emergence of dynamic recrystallization is highlighted thanks to microstructural observations. Then, a finite element model of the hot cutting operation is introduced. The material behaviour is modelled with a specific constitutive model considering the influence of dynamic recrystallization on the plastic flow stress. Finally, the predictive response of this model is compared to the experimental observations.
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Communication sans acteLE MERCIER, Kévin; WATREMEZ, Michel; GUERIN, Jean-Daniel; FOUILLAND-PAILLE, Laurence; DUBAR, Laurent (2013)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 ...
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Dynamic recrystallization behaviour of spheroidal graphite iron. Application to cutting operations Article dans une revue avec comité de lectureLE MERCIER, Kévin; WATREMEZ, Michel; PUCHI-CABRERA, Eli-Saul; DUBAR, Laurent; GUERIN, Jean-Daniel; FOUILLAND-PAILLE, Laurence (Elsevier, 2017)To increase the competitiveness of manufacturing processes, numerical approaches are unavoidable. Nevertheless, a precise knowledge of the thermo-mechanical behaviour of the materials is necessary to simulate accurately ...
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Communication avec acteSENECAUT, Yannick; WATREMEZ, Michel; BROCAIL, Julien; FOUILLAND-PAILLE, Laurence; DUBAR, Laurent (2015)In numerical approaches for high speed machining, the rheological behavior of machined materials is usually described by a Johnson Cook law. However, studies have shown that dynamic recrystallization phenomena appear during ...
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Communication avec acteCe travail se concentre sur le développement d’une technique de mesure de champs cinématiques pour l’étude des phénomènes se déroulant lors de la découpe à chaud d’alliages métalliques. Le développement d’une méthode de ...
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Communication avec acteThis study deals with the use of Digital Image Correlation (DIC) to investigate the physical phenomena taking place during the orthogonal cutting of a SG iron specimen at high temperature (around 1,000 °C). After h aving ...