Title: The microstructural modelling of room temperature creep in titanium alloys using a cellular automata model

Authors: N. Boutana, P. Bocher, M. Jahazi, D. Piot, F. Montheillet

Addresses: Ecole de Technologie Superieure, University of Quebec, 1100 rue Notre-Dame ouest, Montreal (QC), H3C 1K3, Canada. ' Ecole de Technologie Superieure, University of Quebec, 1100 rue Notre-Dame ouest, Montreal (QC), H3C 1K3, Canada. ' Centre des Technologies de Fabrication en Aerospatiale (CTFA), 5145, Avenue Decelles, Montreal (QC), H3S 2S4, Canada. ' Ecole Nationale Superieure des Mines de Saint-Etienne (SMS), UMR CNRS 5146, 158, cours Fauriel, 42023 Saint-Etienne Cedex 2, France. ' Ecole Nationale Superieure des Mines de Saint-Etienne (SMS), UMR CNRS 5146, 158, cours Fauriel, 42023 Saint-Etienne Cedex 2, France

Abstract: A cellular automaton model is proposed to describe the creep behaviour of Ti alloys. The technique is a well-known mathematical method that has been recently used to simulate the mechanical behaviour of materials identified by a discrete number of sites, called cells, organised in a two- or three-dimensional lattice. The creep behaviours of various types of microstructures with different crystallographic textures were simulated. The results can explain the large discrepancy obtained in the creep responses of the titanium samples subjected to similar loading conditions.

Keywords: cellular automata; creep deformation; titanium alloys; Eshelby inclusion; macrozone; microstructure; mathematical modelling; simulation; crystallographic texture.

DOI: 10.1504/IJMMP.2008.022041

International Journal of Microstructure and Materials Properties, 2008 Vol.3 No.4/5, pp.642 - 653

Published online: 17 Dec 2008 *

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