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) C7-265 - C7-269
DOI http://dx.doi.org/10.1051/jp4:1993742
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) C7-265-C7-269

DOI: 10.1051/jp4:1993742

Modelling the creep anisotropy of nickel-base superalloys with a composite model

L. MÜLLER

Technische Universität Berlin, Institut für Metallforschung, BH18, Strasse des 17. Juni 135, 1000 Berlin 12, Germany


Abstract
The creep anisotropy of nickel-base superalloys with a cubic γ' morphology is studied with a composite model. Creep curves and the internal stress distribution in the microstructure under [011] load are calculated with a Finite Element Procedure. Analytical considerations are made for arbitrary loading directions. γ' cubes (with their interfaces aligned parallel to {001} planes) under [001] load have a significant larger creep strength than under [011] or [111] load. Under [011] load the matrix deformation is mainly concentrated in the roof matrix channels.



© EDP Sciences 1993