A unified static and dynamic recrystallization Internal State Variable (ISV) constitutive model coupled with grain size evolution for metals and mineral aggregates

2019 ◽  
Vol 112 ◽  
pp. 123-157 ◽  
Author(s):  
H.E. Cho ◽  
Y. Hammi ◽  
A.L. Bowman ◽  
Shun-ichiro Karato ◽  
J.R. Baumgardner ◽  
...  
Keyword(s):  
Grain Size ◽  
Constitutive Model ◽  
Dynamic Recrystallization ◽  
Internal State ◽  
Internal State Variable ◽  
State Variable ◽  
Size Evolution ◽  
Mineral Aggregates

scholarly journals Application of the Bammann inelasticity internal state variable constitutive model to geological materials

2011 ◽  
Vol 184 (3) ◽  
pp. 1023-1036 ◽  
Author(s):  
J. A. Sherburn ◽  
M. F. Horstemeyer ◽  
D. J. Bammann ◽  
J. R. Baumgardner
Keyword(s):  
Constitutive Model ◽  
Internal State ◽  
Internal State Variable ◽  
Geological Materials ◽  
State Variable

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

2012 ◽  
Vol 715-716 ◽  
pp. 492-497 ◽  
Author(s):  
Darren G. Cram ◽  
Hatem S. Zurob ◽  
Yves J.M. Bréchet ◽  
Christopher R. Hutchinson
Keyword(s):  
Grain Size ◽  
Dynamic Recrystallization ◽  
Growth Models ◽  
Peak Stress ◽  
Physically Based Model ◽  
Size Evolution ◽  
Model Predictions ◽  
Physically Based ◽  
Pure Cu ◽  
State Stress

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.

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