Paper Titles
Committee
Preface
Effect of Changing Strain Rate during Warm Deformation on Static Recrystallisation of IF Steel
p.3
The Application of Multiscale Modelling for the Prediction of Plastic Anisotropy and Deformation Textures
p.13
Simulation of Rolling and Recrystallization Textures in Aluminium Alloy Sheets
p.23
Evolution of the Grain Boundary Network as a Consequence of Deformation and Annealing
p.35
Modelling the Precipitation of Al3X Dispersoids in Aluminium Alloys and their Effect on Recrystallization
p.45
On the Viability of FIB Tomography for Generating 3-D Orientation Maps in Deformed and Annealed Metals
p.55
Correlating Microstructural Features and Surface Roughening in Ferritic Stainless Steel
p.65

The Application of Multiscale Modelling for the Prediction of Plastic Anisotropy and Deformation Textures

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Abstract:

Finite element models for metal forming and models for the prediction of forming limit strains should be as accurate as possible, and hence should take effects due to texture, microstructure and substructure (dislocation patterns) into account. To achieve this, a hierarchical type of modelling is proposed in order to maintain the balance between calculation speed (required for engineering applications) and accuracy. This means that the FE models work with an analytical constitutive model, the parameters of which are identified using results of multilevel models. The analytical constitutive model will be discussed, as well as the identification procedure. The multilevel models usually connect the macro-scale with a meso-scale (grain level) via a homogenisation procedure. They can also be used to make predictions of deformation textures. These will be quantitatively compared with experimentally obtained rolling textures of steel and aluminium alloys. It was found that only models which to some extent take both stress and strain interactions between adjacent grains into account perform well. Finally an example of a three level model, also including the micro-scale (i.e. the dislocation substructure), will be given.

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Periodical:

Materials Science Forum (Volume 550)

Pages:

13-22

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.550.13

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Online since:

July 2007

Authors:

Paul van Houtte, Albert Van Bael, Marc Seefeldt

Keywords:

Cold Rolling, Deformation Texture, Dislocation Substructure, Finite Element Model (FEM), Metal Forming, Multi-Scale Modelling, Plastic Anisotropy, Taylor Model

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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