MODELING OF THE KINETICS OF CARBONITRIDES PRECIPITATION PROCESS IN MICROALLOYED STEELS

1 MARYNOWSKI Przemysław
Co-authors:
1,2 GŁOWACKI Mirosław 1 ADRIAN Henryk 1 WOŹNY Krzysztof 1 KOCLĘGA Damian
Institutions:
1 AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Kraków, Poland, EU, pmarynow@agh.edu.pl
2 The Jan Kochanowski University (JKU), Kielce, Poland, EU
Conference:
27th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 23rd - 25th 2018
Proceedings:
Proceedings 27th International Conference on Metallurgy and Materials
Pages:
783-788
ISBN:
978-80-87294-84-0
ISSN:
2694-9296
Published:
24th October 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
7 views / 4 downloads
Abstract

Microalloying elements Ti, Nb, V, entered into steel they influence their microstructure and mechanical properties, because formation of carbonitrides, M (C, N), which in the high temperature inhibit the austenite grains growth and during the cooling of the austenite form fine precipitates giving the dispersion precipitation effect in ferrite. Influence of carbonitrides to the microstructure and mechanical properties depends on their basic stereological parameters: volume fraction, VV, and their size, r. In this work the model of the kinetics of the carbonitrides precipitation which enable to predict the chemical composition of austenite as well as the size distribution of carbonitrides formed during isothermal annealing of supersaturated steel is presented. The model is based on the Kampmann and Wagner model developed using the classical theory of nucleation. Examples of applications of developed model are presented.

Keywords: Cellular automata, precipitation, carbonitrides, microalloying elements, microalloyed steel
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