Numeric simulation of the α/γ-phase ratio of ferritic-austenitic duplex steels
-
Michael Pohl
and
Murat Mola
Abstract
In the past, the necessity to predict the α/γ-phase ratio in duplex steels gave rise to a number of empirical equations and diagrams, which, however, do not guarantee a reliable prediction. Due to the insufficient agreement between experiment and empirical calculation, the new and further development of duplex steels is still carried out by means of very time-consuming and costly experiments. The CALPHAD method (CALculation of PHAse Diagrams) [1], whose calculational realization is effected by the software program Thermo-Calc [2] in connection with the optimized thermodynamic database TCFE2 (Thermo-Calc FErrum Database, Version 2), can now be used to establish a reliable (parameter optimization), thermodynamic database for duplex steels and to estimate the phase ratio.
References
[1] M. Pohl: Prakt. Metallogr., Sonderband 28 (1996) 57.10.1007/BF03230913Search in Google Scholar
[2] L. Kaufman, H. Bernstein: Computer Calculation of Phase Diagrams, Man Labs Inc., Cambridge, Massachussetts, Academic Press New York and London (1970).Search in Google Scholar
[3] M. Pohl: Z. Metallkd. 86 (1995) 97.10.1515/ijmr-1995-860205Search in Google Scholar
[4] B. Sundman, B. Jansson, J.-O. Andresson: Calphad Computer Coupling of Phase Diagrams and Thermo-chemistry, Vol. 9 (1985) 153.10.1016/0364-5916(85)90021-5Search in Google Scholar
[5] M. Hillert: Conference “Celebrate the 250th Anniversary of Jern-kontoret” 379.Search in Google Scholar
© 2005 Carl Hanser Verlag, München
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Articles in the same Issue
- Frontmatter
- Editorial
- Heinrich Oettel – 65 Jahre
- Articles Basic
- Misorientations and geometrically necessary dislocations in deformed copper crystals: A microstructural analysis of X-ray rocking curves
- Microstructure and lattice defects in highly deformed metals by X-ray diffraction whole powder pattern modelling
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- Corrosion behaviour of hard coatings on Mg substrates
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- Notifications/Mitteilungen
- Personal/Personelles
- Press/Presse
- Conferences
