The influence of mechanical constraints introduced by β annealed microstructures on the yield strength and ductility of Ti-6Al-4V - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Article Dans Une Revue Journal of the Mechanics and Physics of Solids Année : 2017

The influence of mechanical constraints introduced by β annealed microstructures on the yield strength and ductility of Ti-6Al-4V

Résumé

Discussed is a computational study of the influence of the microstructure's geometric morphology on the yield strength and ductility of Ti-6Al-4V. Uniaxial tension tests were conducted on physical specimens to determine the macroscopic yield strength and ductility of two microstructural variations (mill annealed and β annealed) to establish comparisons of macroscopic properties. A multi-experimental approach was utilized to gather two dimensional and three dimensional data, which were used to inform the construction of representative β annealed polycrystals. A highly parallelized crystal plasticity finite element framework was employed to model the deformation response of the generated polycrystals subjected to uniaxial tension. To gauge the macroscopic response's sensitivity to the morphology of the geometry, the key geometrical features-namely the number of high temperature β phase grains, α phase colonies, and size of remnant secondary β phase lamellae-were altered systematically in a suite of simulations. Both single phase and dual phase aggregates were studied. Presented are the calculated yield strengths and ductilities, and the resulting trends as functions of geometric parameters are examined in light of the heterogeneity in deformation at the crystal scale.
Fichier principal
Vignette du fichier
1-s2.0-S0022509616306962-Matthew_Kasemer_Yield_Strength_2016.pdf (4.46 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03442465 , version 1 (23-11-2021)

Identifiants

Citer

Matthew Kasemer, Romain Quey, Paul Dawson. The influence of mechanical constraints introduced by β annealed microstructures on the yield strength and ductility of Ti-6Al-4V. Journal of the Mechanics and Physics of Solids, 2017, 103, pp.179-198. ⟨10.1016/j.jmps.2017.03.013⟩. ⟨hal-03442465⟩
15 Consultations
11 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More