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Constitutive Modelling of AZ31B-O Magnesium Alloy for Cryogenic Machining

Communication avec acte
Author
GIRAUD, Eliane
ROSSI, Frederic
127742 Laboratoire Bourguignon des Matériaux et Procédés [LABOMAP]
ccGERMAIN, Guénaël
206863 Laboratoire des Arts et Métiers ParisTech d'Angers - Procédés Matériaux Durabilité [LAMPA - PMD]
MARTINS DO OUTEIRO, Jose Carlos

URI
http://hdl.handle.net/10985/7176
DOI
10.1016/j.procir.2013.06.144
Date
2013

Abstract

The success of a FE model for metal cutting process is strongly dependent on the accurate characterization of the workpiece material, under similar conditions as those found in metal cutting. In this paper, dynamic shear tests using a Gleeble machine have been performed on 4 mm thickness disks of AZ31B-O magnesium alloy, using a special designed tool. In order to include the effects of the cryogenic cooling in the material behavior, the specimens have been submitted to temperatures ranging from -25ºC to 400ºC. A Johnson-Cook constitutive model has then been identified in order to describe the flow stress in machining.

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