Calorific signature of PLC bands under biaxial loading conditions in Al-Mg alloys - Université de Rennes Accéder directement au contenu
Communication Dans Un Congrès Année : 2018

Calorific signature of PLC bands under biaxial loading conditions in Al-Mg alloys

Jean-Benoit Le Cam
Eric Robin

Résumé

This paper investigates the thermomechanical behavior of Al-Mg alloys submitted to biaxial loading until fracture. The study aims to characterize calorimetric signature accompanying the formation and propagation of Portevin-Le Chatelier (PLC) bands induced by such a loading condition. Full kinematic and thermal fields on the specimen surface were characterized by using Digital Image Correlation (DIC) and infrared thermography (IRT). Heat source field was reconstructed from the temperature field and the heat diffusion equation. The heat source map enables us to visualize spatio-temporal gradients in the calorimetric response of the material and to investigate the kinematics of PLC bands induced by equibiaxial tensile loading. Under certain conditions, heat source maps can be seen as mechanical dissipation maps. At the specimen centre, the heat source exhibits jumps that fit with jumps of temperature and equivalent deformation rate.
Fichier principal
Vignette du fichier
JBLC2017.pdf (304.96 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01671671 , version 1 (07-05-2020)

Licence

Paternité

Identifiants

Citer

Jean-Benoit Le Cam, Eric Robin, L. Leotoing, D. Guines. Calorific signature of PLC bands under biaxial loading conditions in Al-Mg alloys. 2017 Annual Conference on Experimental and Applied Mechanics, 2017, Indianapolis, United States. pp.29-35, ⟨10.1007/978-3-319-62899-8_5⟩. ⟨hal-01671671⟩
100 Consultations
96 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More