Modelling Discontinuous Dynamic Recrystallization Using a Physically-Based Model for Nucleation

Darren G. Cram; Hatem Zurob; Yves J.M. Bréchet; Christopher R. Hutchinson

doi:10.4028/www.scientific.net/MSF.715-716.492

Paper Titles

In Situ Measurements of Magnetically Driven Grain Boundary Migration in Zn Bicrystals
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Grain Growth and the Puzzle of its Stagnation in Thin Films a Detailed Comparison of Experiments and Simulations
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Combined Physical Modeling and Monte Carlo Simulation of Recrystallization of Hot Deformed AA7020 Aluminum Alloy
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EBSD Coupled to SEM In Situ Annealing as a Tool to Identify Recrystallization Mechanisms - Application to Zr and Ta Alloys
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Modelling Discontinuous Dynamic Recrystallization Using a Physically-Based Model for Nucleation
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A 3D FIB Investigation of Dynamic Recrystallization in a Cu-Sn Bronze
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Substructure Dynamics in Crystalline Materials: New Insight from In Situ Experiments, Detailed EBSD Analysis of Experimental and Natural Samples and Numerical Modelling
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Deformation and Recrystallization Texture Evolution in Nanocrystalline Nickel
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Box-Scan: A Novel 3DXRD Method for Studies of Recrystallization and Grain Growth
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Modelling Discontinuous Dynamic Recrystallization Using a Physically-Based Model for Nucleation

Abstract:

A physically-based model for nucleation during discontinuous dynamic recrystallization (DDRX) has been developed and is coupled with polyphase plasticity and grain growth models to predict the macroscopic stress and grain size evolution during straining. The nucleation model is based on a recent description for static recrystallization and considers the dynamically evolving substructure size. Model predictions are compared with literature results on DDRX in pure Cu as a function of initial grain size, deformation temperature and strain-rate. The characteristic DRX features such as single to multiple peak stress transitions and convergence towards a steady-state stress and grain size are quantitatively reproduced by the model.