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- Title
一种铁素体- 奥氏体相变动力学模型.
- Authors
蓝慧芳; 柳泽阳; 武梦如
- Abstract
In this paper, based on the concepts of mixed model and Gibbs energy balance model, a simple Gibbs energy balance model was established to simulate the ferrite-austenite transformation of Fe-C-Mn low carbon steel during the intercritical annealing at 780℃. The effects of Gibbs free energy, effective grain size and alloying distribution on the transformation were studied. The results show that the initial effective grain size and interfacial mobility greatly affected the kinetics of phase transformation, while they had little effect on the final volume fraction of the austenite. The dissipation energy caused by the Mn enrichment at the interface during phase transformation slowed down the transformation kinetics and reduced the final volume fraction of the austenite. It is found that the modelling results above are in good accordance with the experimental ones.
- Subjects
MILD steel; GIBBS' free energy; PARTICLE size distribution; PHASE transitions; ENERGY dissipation; FERRITES
- Publication
Journal of Northeastern University (Natural Science), 2023, Vol 44, Issue 7, p938
- ISSN
1005-3026
- Publication type
Article
- DOI
10.12068/j.issn.1005-3026.2023.07.004