Microstructure and mechanical behaviour of a Nextel™610/alumina weak matrix composite subjected to tensile and compressive loadings - ONERA - Office national d'études et de recherches aérospatiales Accéder directement au contenu
Article Dans Une Revue Journal of the European Ceramic Society Année : 2017

Microstructure and mechanical behaviour of a Nextel™610/alumina weak matrix composite subjected to tensile and compressive loadings

Résumé

The present study was aimed at determining the mechanical behaviour of a weak matrix oxide/oxide CMC subjected to tensile and compressive loadings in the fibre direction and at identifying the damage mechanisms. The material consisted of Nextel™610 fibres (8 HSW) embedded in an alumina matrix, with a 49 % fibre volume fraction and 24 ± 2 % total porosity. The average ultimate tensile stress and strain of the material were, respectively, 260 ± 37 MPa and 0.3 ± 0.09 % under tensile loading and −261 ± 69 MPa and −0.19 ± 0.04 % under compressive loading. Three types of pores were differentiated within the material: nanopores (13 ± 1 %), micropores (6 ± 2 %) and macropores (5 ± 1 %). The latter appear to be the most detrimental for the material, enhancing delamination. The damage mechanisms of the material were assessed through SEM examination and in situ tensile tests.

Domaines

Matériaux
Fichier principal
Vignette du fichier
benramdane2017.pdf (1.6 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-01559139 , version 1 (25-01-2022)

Licence

Paternité - Pas d'utilisation commerciale

Identifiants

Citer

Camélia Ben Ramdane, Aurélie Julian-Jankowiak, Roger Valle, Yves Renollet, Michel Parlier, et al.. Microstructure and mechanical behaviour of a Nextel™610/alumina weak matrix composite subjected to tensile and compressive loadings. Journal of the European Ceramic Society, 2017, 37 (8), pp.2919-2932. ⟨10.1016/j.jeurceramsoc.2017.02.042⟩. ⟨hal-01559139⟩
169 Consultations
112 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More