2013
DOI: 10.2355/isijinternational.53.527
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Cellular Automaton Modeling of Austenite Nucleation and Growth in Hypoeutectoid Steel during Heating Process

Abstract: A cellular automaton model has been developed to simulate the austenite nucleation and growth of hypoeutectoid steel during heating process. In the model, the dissolution of pearlite, the transformation of ferrite into austenite and austenite grain coarsening were simulated. To validate the model, dilatometric and quenching experiments were carried out. The dilatometric experiment was conducted using a DIL805A dilatometer, and experimental data was employed to study phase transformation kinetics and validate t… Show more

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Cited by 23 publications
(13 citation statements)
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“…A continuous nucleation model 7,15) (8) where ΔT is the value of overheating (ΔT=T-Ac1), nγ (ΔT) is the nucleus density, fN is the factor representing the influence of pearlite structure on the nucleation, QN is the activation energy of nucleation, and k is Boltzmann's constant. Austenite grains grow into the pearlite region at a velocity v (9) where fG is the factor representing the influence of pearlite structure on the growth rates, and QG is the activation energy of growth.…”
Section: Phase Transformation During Heat Treatmentmentioning
confidence: 99%
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“…A continuous nucleation model 7,15) (8) where ΔT is the value of overheating (ΔT=T-Ac1), nγ (ΔT) is the nucleus density, fN is the factor representing the influence of pearlite structure on the nucleation, QN is the activation energy of nucleation, and k is Boltzmann's constant. Austenite grains grow into the pearlite region at a velocity v (9) where fG is the factor representing the influence of pearlite structure on the growth rates, and QG is the activation energy of growth.…”
Section: Phase Transformation During Heat Treatmentmentioning
confidence: 99%
“…CA method 6,7) was used in the simulation. A twodimensional computational domain was discretized into square cells.…”
Section: Model Validationmentioning
confidence: 99%
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“…A number of mathematical models have been developed to predict the relationship between processing parameters and dendrite evolution since the 1950s . Sharp interface model, level set model, phase field model, and cellular automata (CA) model have been applied to the simulation of meso‐scale dendrite growth. Quantitative simulation of dendrite growth in a macroscopic system with feasible computational cost is a challenge.…”
Section: Introductionmentioning
confidence: 99%