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Modelling Dynamic Recovery and Recrystallization of Metals by a New Non-Equilibrium Thermodynamics Approach

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Abstract:

A non-equilibrium thermodynamics-based approach is proposed to predict the dislocation density and flow stress at the steady state of high temperature deformation. For a material undergoing dynamic recovery and recrystallization, it is found that the total dislocation density can be expressed as ( )2 ρ = λε& b , where ε& is the strain rate, b is the magnitude of the Burgers vector and λ is a dynamic recovery and recrystallization related parameter.

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Periodical:

Materials Science Forum (Volumes 558-559)

Pages:

517-522

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.558-559.517

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Online since:

October 2007

Authors:

Ming Xin Huang, Pedro E.J. Rivera-Díaz-del-Castillo, Sybrand van der Zwaag

Keywords:

Dislocation Density, Dynamic Recovery, Dynamic Recrystallization (DRX), Steady State Stress

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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