Numéro
J. Phys. IV France
Volume 03, Numéro C7, Novembre 1993
The 3rd European Conference on Advanced Materials and Processes
Troisiéme Conférence Européenne sur les Matériaux et les Procédés Avancés
Page(s) C7-669 - C7-678
DOI http://dx.doi.org/10.1051/jp4:19937106
The 3rd European Conference on Advanced Materials and Processes
Troisiéme Conférence Européenne sur les Matériaux et les Procédés Avancés

J. Phys. IV France 03 (1993) C7-669-C7-678

DOI: 10.1051/jp4:19937106

Early stages of fatigue damage in aluminium and aluminium alloys

R. FOUGERES

INSA de Lyon, Laboratoire GEMPPM, URA 341 du CNRS, Villeurbanne, France


Abstract
In this paper fatigue damage initiation is considered as both microcrack nucleation from microheterogeneities within fatigued material and microcrack growth over distances corresponding to the size of the microstructure. A brief review of the literature shows that, depending on fatigue conditions and microstructure three different types of nucleation sites exist in aluminium and aluminium alloys : slip bands, grain boundaries and brittle particles. In the last part of this paper tentative to obtain a general view of fatigue damage initiation is made from theoritical considerations taking into account incompatibility problems between matrix and microheterogeities.



© EDP Sciences 1993