Regensburg 2007 – wissenschaftliches Programm

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MM: Fachverband Metall- und Materialphysik

MM 41: Materials design I

MM 41.1: Vortrag

Freitag, 30. März 2007, 11:00–11:15, H16

A texture component model for predicting recrystallization textures — •Abhijit Brahme, Myrjam Winning, and Dierk Raabe — Max Planck Institute for steel Research, Max-Planck Str. 1 Duesseldorf 40237

We present an analytical model for predicting crystallographic textures and the final grain size during primary static recrystallization of metals using texture components. The model uses a subset of texture components instead of using the entire set of orientations needed to represent the material. The recrystallization kinetics and the texture evolution are governed by the tensorial variant of the Johnson-Mehl-Avrami-Kolmogorov (JMAK) equation. The number of components determines the order of this tensor. Each entry in the tensors represents coupling between the recrystallizing and the deformed components. The growth of a recrystallizing component in to a given deformed component is dependent on various factors like activation energy of nucleation, activation energy for boundary mobility and stored energy (in the deformed region). Main aim of this work is to present a fast and physically based process for simulation of recrystallization texture with respect to processing. We also present preliminary results of application of this method to low carbon steels.