Influence of Isothermal Heating Time on the Disappearance of Strain Hardening in High-Manganese TRIPLEX Type Steels

• Autorzy: Sozańska-Jędrasik L. , Mazurkiewicz J. , Borek W.

Identyfikatory

DOI

10.24425/amm.2018.125139

• Języki publikacji: EN

Abstrakty

EN

The paper presents the results of the effect of isothermal heating time on the disappearance of strain hardening (the softening degree) of the studied high-manganese TRIPLEX type steels at a temperature of 900 and 1000°C. In order to determine the kinetics of recrystallization of austenite plastically deformed for selected steels, hot compression tests with draft ε = 0.2 were made. The presented results reveal that the complete recrystallization of austenite needs long isothermal heating times. In industrial conditions, such long times are not used, therefore in the initial rolling passages, the time required for half recrystallization of austenite t_0.5 is often used. The total disappearance of the strain hardening, completion of the recrystallization of austenite tested high-manganese X98 and X105 TRIPLEX type steels isothermal heating time requires far more than 200 s. The increase of the deformation temperature is a factor influencing the acceleration of the disappearance of strain hardening.

Słowa kluczowe

EN

Fe-Mn-Al-C steels; TRIPLEX steel; thermo-mechanical processing; softening degree

• 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: 2018
• Tom: Vol. 63, iss. 4
• Strony: 2023--2030
• Opis fizyczny: Bibliogr. 30 poz., fot., rys., tab., wykr.

Twórcy

autor

Sozańska-Jędrasik L.

• Silesian University of Technology, Institute of Engineering Materials and Biomaterials, 18a Konarskiego Str., 44 100 Gliwice, Poland

autor

Mazurkiewicz J.

• Silesian University of Technology, Institute of Engineering Materials and Biomaterials, 18a Konarskiego Str., 44 100 Gliwice, Poland

autor

Borek W.

• Silesian University of Technology, Institute of Engineering Materials and Biomaterials, 18a Konarskiego Str., 44 100 Gliwice, Poland

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Uwagi

EN

Scientific work was financed in the framework of project funded by the National Science Centre based on the decision number DEC-2012/05/B/ST8/00149. Liwia Sozańska-Jędrasik is a scholarship holder of the Visegrad International Scholarship Grant for the period September 2017 to July 2018. so some of the research was conducted in collaboration with Ing. Martin Kraus from VŠB- Technical University of Ostrava in the Czech Republic. This publication was financed by the Ministry of Science and Higher Education of Poland as the statutory financial grant of the Faculty of Mechanical Engineering SUT.