Thermo-mechanical characterization of the Ti17 titanium alloy under extreme loading conditions - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue International Journal of Advanced Manufacturing Technology Année : 2016

Thermo-mechanical characterization of the Ti17 titanium alloy under extreme loading conditions

Résumé

Understanding the physics of chip formation in machining operations is often difficult due to the complexity of the phenomena involved, such as the extreme and complex loading conditions that occur in the cutting zone. In order to model the machining process, it is necessary to use a constitutive behavior law that is capable of reproducing as accurately as possible the behavior of the material under these extreme conditions. In this context, this paper presents a study of the mechanical behavior of the Ti17 titanium alloy at high strain rates and high temperatures. This has been achieved by undertaking compression and shear tests over a wide range of strain rates (from 10−1 s−1 to 100 s−1) and temperatures (from 25 to 800 ◦C). The results show that the Ti17 alloy is sensitive to strain rate, especially for strain rates greater than 1 s−1. In addition, the alloy retains good mechanical properties at high temperature (up to 500 ◦C). Based on the experimental results, the parameter of the Johnson-Cook constitutive equation have been identified using the inverse method. Some weaknesses in the model have been highlighted after the identification phase, especially in terms of the m and C parameters. A modification of the model has been proposed.
Fichier principal
Vignette du fichier
LAMPA_IJAMT_2016_AYED.pdf (3.6 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01391021 , version 1 (02-11-2016)

Identifiants

Citer

Yessine Ayed, Guénaël Germain, Amine Ammar, Benoit Furet. Thermo-mechanical characterization of the Ti17 titanium alloy under extreme loading conditions. International Journal of Advanced Manufacturing Technology, 2016, pp.1-11. ⟨10.1007/s00170-016-9476-5⟩. ⟨hal-01391021⟩
93 Consultations
147 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More