Effect of Heat Treatment on Microstructure and Mechanical Properties of High-Carbon and High-Manganese Cast Steel Subjected to Bainitic Reaction

• Autorzy: Garbień P. , Kokosza A. , Maj W. , Rogal Łukasz , Chulist Robert , Janus K. , Wójcik Anna , Żółkiewicz Z. , Maziarz Wojciech

Identyfikatory

DOI

10.24425/amm.2023.148335

• Języki publikacji: EN

Abstrakty

EN

The new cast steel with a chemical composition of Fe-(0.85-0.95)C-(1.50-1.60)Si-(2.40-2.60)Mn-(1.0-1.2)Al-(0.30-0.40)­Mo-(0.10-0.15)V-(1.0-1.1)Ni (all in wt.%) was investigated in aspect of formation of the multiphase microstructure leading to high strength and ductility. Two types of heat treatment technologies were developed. The first one involves softening annealing at a temperature of 650°C for 4 hours, heating up to 950°C and holding for 2 hours, and then fast cooling down to 200°C and isothermally treated for 2 hours. The second one involves homogenizing annealing at 1100°C for 6 hours, then cooling with furnace down to 950°C and holding for 2 hours, then fast cooling down to 200°C and isothermally treated for 2 hours. A unique microstructure of cast steel consisting of martensite and retained austenite plates of various thicknesses and volume fractions was obtained. Additionally, nanometric transition carbides were noticed after the above-mentioned heat treatments. This microstructure ensures high hardness, strength and plasticity (Rm = 1426 MPa and A = 9.5%), respectively, due to the fact that TWIP/TRIP processes occur during deformation related to the high volume fraction of retained austenite, which the stacking fault energy is above 15 mJ/m^-2 resulting from the chemical composition of the investigated cast steel.

Słowa kluczowe

EN

cast steel; multiphase microstructure; TEM; mechanical properties

• 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: 2023
• Tom: Vol. 68, iss. 4
• Strony: 1667--1676
• Opis fizyczny: Bibliogr. 21 poz., fot., rys., tab., wzory

Twórcy

autor

Garbień P.

• Institute of Metallurgy and Materials Science, Polish Academy of Sciences, 25 Reymonta Str., 30-059, Kraków, Poland
• Specodlew Sp. z o.o. Rotmistrza Witolda Pileckiego 3 Str., 32-050 Skawina, Poland

autor

Kokosza A.

• AGH University of Krakow, Faculty of Metals Engineering and Industrial Computer Science, Al. Mickiewicza 30, 30-059 Krakow, Poland

autor

Maj W.

• Specodlew Sp. z o.o. Rotmistrza Witolda Pileckiego 3 Str., 32-050 Skawina, Poland

autor

Rogal Łukasz

• Institute of Metallurgy and Materials Science, Polish Academy of Sciences, 25 Reymonta Str., 30-059, Kraków, Poland

• https://orcid.org/0000-0003-2289-8117

autor

Chulist Robert

• Institute of Metallurgy and Materials Science, Polish Academy of Sciences, 25 Reymonta Str., 30-059, Kraków, Poland

• https://orcid.org/0000-0001-6680-9636

autor

Janus K.

• Institute of Metallurgy and Materials Science, Polish Academy of Sciences, 25 Reymonta Str., 30-059, Kraków, Poland

autor

Wójcik Anna

• Institute of Metallurgy and Materials Science, Polish Academy of Sciences, 25 Reymonta Str., 30-059, Kraków, Poland

• https://orcid.org/0000-0002-1774-751X

autor

Żółkiewicz Z.

• Specodlew Sp. z o.o. Rotmistrza Witolda Pileckiego 3 Str., 32-050 Skawina, Poland

autor

Maziarz Wojciech

• Institute of Metallurgy and Materials Science, Polish Academy of Sciences, 25 Reymonta Str., 30-059, Kraków, Poland

• https://orcid.org/0000-0001-8363-9640

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Uwagi

1. The research was co-financed by the Polish Ministry of Science and Higher Education in the frame of the project DWD/3/29/2019 “Doktorat Wdrożeniowy”. The research was supported by National Centre for Research and Development, Poland in frame of “Szybka Sciezka” program, project title: “Development and implementation of an innovative technology for casting of thin-walled elements based on Fe matrix for defence and automotive industries characterized by high dimensional accuracy and increased strength” project number: POIR.01.01.01-00-0197/17.

2. Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki (2025)