Study of the residual stress field around Vickers indentations in a 3Y‐TZP - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Materials Science Année : 1996

Study of the residual stress field around Vickers indentations in a 3Y‐TZP

Résumé

Indentation cracks are often used as initial flaws in ceramics for different mechanical tests because of their unique advantages. The residual stresses around the indent due to the elastic/plastic contact must generally be relaxed, which can be conducted by heat treatment. The stress field around Vickers indentation and conditions of annealing have been analysed on a Y-TZP material. Different heat treatments from room temperature up to 1200 °C have been conducted. The residual stress field has been characterized by different methods. First, stable crack propagation in the residual stress field has been conducted by applying a bending stress to the indented specimens. The apparent toughness has also been measured by conducting fast fracture on indented specimens. Finally the residual stress present around the indentation has been measured by making micro-indentations and by measuring the crack lengths. The results show that at intermediate temperatures up to 600 °C an apparent stress relaxation occurs due to the tetragonal to monoclinic phase transformation which induced a superimposed compressive stress. The higher temperature of 1200 °C effectively leads to a real stress relaxation without healing the crack.
Fichier principal
Vignette du fichier
Chevallier1996.pdf (383.52 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Licence : CC BY NC - Paternité - Pas d'utilisation commerciale

Dates et versions

hal-01670918 , version 1 (06-04-2023)

Licence

Paternité - Pas d'utilisation commerciale

Identifiants

Citer

Jérôme Chevalier, Christian Olagnon, Gilbert Fantozzi. Study of the residual stress field around Vickers indentations in a 3Y‐TZP. Journal of Materials Science, 1996, 31 (10), pp.2711-2717. ⟨10.1007/BF00687305⟩. ⟨hal-01670918⟩
20 Consultations
16 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More