Microstructure-Properties Relationship and Mechanical Stability of Retained Austenite in Thermomechanically Processed Medium-C TRIP Steel at Different Deformation Temperatures

• Autorzy: Skowronek A. , Kozłowska A. , Grajcar A. , Morawiec M.

Identyfikatory

DOI

10.24425/amm.2020.132842

• Języki publikacji: EN

Abstrakty

EN

The paper presents the effect of deformation temperature on the mechanical stability of retained austenite in a multiphase TRIP steel. Series of static tensile tests were carried out in the temperature range –20 to 140°C in order to simulate the temperatures occurring during stamping process of automotive steel sheets and conditions of their exploitation. Samples deformed at 20°C and 60°C showed the best combination of strength and ductility. It was related to the gradual transformation of retained austenite into martensite. Obtained results revealed that the intensity of TRIP effect is significantly related to the deformation temperature. The amount of retained austenite, which transformed into martensite during plastic deformation decreases as the deformation temperature increases. It was also found that the stability of retained austenite depends on its morphology. The obtained results showed the relationship between deformation temperature and the stability of retained austenite. The chemical composition and microstructure of multiphase steels dedicated to the automotive industry should be designed for providing the maximum TRIP effect at the specific deformation temperatures.

Słowa kluczowe

EN

TRIP effect; multiphase steel; retained austenite; mechanical stability; deformation temperature

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2020
• Tom: Vol. 65, iss. 2
• Strony: 941--949
• Opis fizyczny: Bibliogr. 38 poz., fot., rys., tab.

Twórcy

autor

Skowronek A.

• Silesian University of Technology, Department of Engineering Materials and Biomaterials, 18A Konarskiego Str., 44-100 Gliwice, Poland

autor

Kozłowska A.

• Silesian University of Technology, Department of Engineering Materials and Biomaterials, 18A Konarskiego Str., 44-100 Gliwice, Poland

autor

Grajcar A.

• Silesian University of Technology, Department of Engineering Materials and Biomaterials, 18A Konarskiego Str., 44-100 Gliwice, Poland

autor

Morawiec M.

• Silesian University of Technology, Department of Engineering Materials and Biomaterials, 18A Konarskiego Str., 44-100 Gliwice, Poland

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Uwagi

EN

1. A. Kozłowska acknowledges the support from statutory funds of the Faculty of Mechanical Engineering of Silesian University of Technology in 2019.

PL

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