Dynamic recrystallization of spheroidal graphite iron during hot cutting operations.
Communication avec acte
Auteur
LE MERCIER, KévinFOUILLAND-PAILLE, LaurenceWATREMEZ, MichelDUBAR, LaurentRésumé
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 acte(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 lecture(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 acte(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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Article dans une revue avec comité de lecture;
EL MANSORI, Mohamed (Elsevier, 2013)
The present paper investigates the brittle-ductile transition (BDT) of the primary shear zone during cutting of spheroidal graphite (SG) iron in the austenitization temperature range (around 1000 °C). The experimental tests ... -
Communication avec acte; ;EL MANSORI, Mohamed (2015)
Ce 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 ...