Fast model for phase transformations during cooling of pre-annealed multiphase steels

• Autorzy: Szeliga Danuta , Kuziak Roman , Zalecki Władysław , Pidvysotskyy Valeriy , Chang Yuling , Bleck Wolfgang , Bachniak Daniel , Pietrzyk Maciej

Warianty tytułu

PL

Szybkie modele przemian fazowych podczas chłodzenia wstępnie wyżarzonych stali wielofazowych

• Języki publikacji: EN

Abstrakty

EN

A thorough experimental and numerical analysis of phase transformations in a selected CP800 steel was the general objective of the paper. Dilatometric tests were performed for a wide range of cooling rates. Two models based on a mean field approach were considered. The first was an upgrade of the Johnson-Mehl-Avrami-Kolmogorov equation. The second model was based on the Leblond equation. Both models were identified using inverse analysis of the experimental data. Simulations of various cooling schedules were performed to validate the models. Phase compositions for these cooling schedules were determined. Following this the effect of elements' segregation during solidification of steel on the occurrence of marteniste/bainite bands was accounted for using the developed models.

PL

W artykule opisano doświadczalną i numeryczną analizę przemian fazowych w wybranej stali o podwyższonej wytrzymałości. Próby dylatometryczne wykonano w szerokim zakresie prędkości chłodzenia. Rozważono dwa modele wykorzystujące metodę średniego pola. Pierwszym modelem była zmodernizowana wersja modelu JMAK (Johnson-Mehl-Avrami-Kolmogorov). Drugim modelem było rozwinięcie równania Leblonda. Przeprowadzono identyfikację modeli wykorzystując rozwiązanie odwrotne dla prób dylatometrycznych. W celu walidacji modeli wykonano symulacje różnych schematów chłodzenia. Wyznaczono skład fazowy dla tych schematów. Następnie oszacowano wahania składu chemicznego w badanej stali i wykorzystano opracowane modele do określenie wpływu segregacji pierwiastków podczas krzepnięcia stali na powstawanie pasm martenzytu/bainitu.

Słowa kluczowe

EN

CP steel; phase transformations; mean field models

PL

stal CP; przemiany fazowe; średnie modele pola

• Wydawca: Wydawnictwa AGH
• Czasopismo: Computer Methods in Materials Science
• Rocznik: 2019
• Tom: Vol. 19, No. 4
• Strony: 150--161
• Opis fizyczny: Bibliogr. 26 poz., rys.

Twórcy

autor

Szeliga Danuta

• AGH University of Science and Technology, Mickiewicza 30, 30-059 Krakow, Poland

autor

Kuziak Roman

• Łukasiewicz Research Network, Institute for Ferrous Metallurgy, K. Miarki 12, 44-100 Gliwice, Poland

autor

Zalecki Władysław

• Łukasiewicz Research Network, Institute for Ferrous Metallurgy, K. Miarki 12, 44-100 Gliwice, Poland

autor

Pidvysotskyy Valeriy

• Łukasiewicz Research Network, Institute for Ferrous Metallurgy, K. Miarki 12, 44-100 Gliwice, Poland

autor

Chang Yuling

• RWTH Aachen University, Templergraben 55, 52062 Aachen, Germany

autor

Bleck Wolfgang

• Łukasiewicz Research Network, Institute for Ferrous Metallurgy, K. Miarki 12, 44-100 Gliwice, Poland

autor

Bachniak Daniel

• AGH University of Science and Technology, Mickiewicza 30, 30-059 Krakow, Poland

autor

Pietrzyk Maciej

• AGH University of Science and Technology, Mickiewicza 30, 30-059 Krakow, Poland

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).