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Simulation of the Texture Evolution of Aluminium Alloys During Primary Static Recrystallization Using a Cellular Automaton Approach

Published online by Cambridge University Press:  10 February 2011

V. Marx  and
G. Gottstein
V. Marx
Affiliation:
Institut für Metallkunde und Metallphysik, RWTH Aachen, Kopernikusstr. 14, 52056 Aachen, Germany, marx@imm.rwth-aachen.de
G. Gottstein
Affiliation:
Institut für Metallkunde und Metallphysikx, RWTH Aachen, Kopernikusstr. 14, 52056 Aachen, Germany
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Abstract

A 3D model has been developed to simulate both primary static recrystallization and recovery of cold worked aluminium alloys. The model is based on a modified cellular automaton approach and incorporates the influence of crystallographic texture and microstructure in respect to both mechanisms mentioned above. The model takes into account oriented nucleation using an approach developed by Nes for aluminium alloys. The subsequent growth of the nuclei depends on the local stored energy of the deformed matrix (i.e. the driving pressure) and the misorientation between a growing nucleus and its surrounding matrix (i.e. the grain boundary mobility). This approach allows to model preferred growth of grains that exhibit maximum growth rate orientation relationship, e.g. for aluminium alloys a 40° <111> relationship with the surrounding matrix. The model simulates kinetics, microstructure and texture development during heat treatment, discrete in time and space.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 529: Symposia BB – Computational & Mathematical Models of Microstructural Evolution , 1998 , 107
Copyright
Copyright © Materials Research Society 1998

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