Les intermétalliques : des superalliages aux quasicristaux
J. Phys. IV France 06 (1996) C2-185-C2-188
The Flow Stress Anomaly of L12 Alloys : Mechanical PropertiesP. Veyssière
LEM, Unité Mixte de Recherche UMR 104, CNRS-ONERA, BP 72, 92322 Châtillon Cedex
This contribution offers a brief account of the current knowledge of the mechanichal properties of L12alloys deformed in the domain of temperature where their so-called flow stress anomaly takes place. Emphasis is put on the features which, on a macroscopic scale, may help identify properties of the rate-controlling mechanism(s). The paper is aimed at emphasizing that the flow stress anomaly is actually accompanied by a variety of atypical mechanical behaviours, of which none can be a priori suspected of being of minor importance in the design of a physically sound model.
© EDP Sciences 1996