A model and experimental validation to predict heating rates for overlap between ferrite recrystallization and austenite transformation in dual phase steel manufacture
| Autor: | Joost Willem Hendrik Van Krevel, Prakash Srirangam, Numan Aslam, Bharath Bandi |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Austenite
Materials science Dual-phase steel Kinetics TN 0211 other engineering and technologies General Engineering Thermodynamics Recrystallization (metallurgy) 02 engineering and technology Experimental validation 021001 nanoscience & nanotechnology Microstructure Kinetic energy TS Isothermal process General Materials Science 0210 nano-technology 021102 mining & metallurgy |
| ISSN: | 1047-4838 |
| Popis: | A systematic theoretical and experimental study has been conducted to predict the heating rates required to obtain a pre-defined percentage of overlap between the ferrite recrystallization process and the austenite formation process in dual phase steel manufacture. Isothermal recrystallization kinetics for three different cold-reduced low-carbon micro-alloyed steels (50%, 60%, and 75%) with ferrite-pearlite-bainite initial microstructures was evaluated. Using various experimentally determined rate kinetic constants and critical temperatures, a continuous heating rate model which predicts the heating rate required for a predefined amount of overlap was successfully developed. The model predicted the heating rates required for a predefined 1%, 15%, 34%, 67%, 88% and 99% of overlap to be 0.2°C/s, 0.9°C/s, 1.8°C/s, 7°C/s, 50.5°C/s and 511°C/s, respectively. The experimentally determined recrystallization percentage values validated the predicted heating rates.\ud \ud |
| Databáze: | OpenAIRE |
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