Effect of Pre-strain on Hydrogen Embrittlement in Intercritically Annealed Fe-6.5Mn-0.08C Medium-Mn steels

• Autorzy: Kim Sang-Gyu , Yoon Young-Chul , Ko Seok-Woo , Hwang Byoungchul

Identyfikatory

DOI

10.24425/amm.2022.141080

• Języki publikacji: EN

Abstrakty

EN

The present research deals with the effect of pre-strain on the hydrogen embrittlement behavior of intercritically annealed medium-Mn steels. A slow strain-rate tensile test was conducted after hydrogen charging by an electrochemical permeation method. Based on EBSD and XRD analysis results, the microstructure was composed of martensite and retained austenite of which fraction increased with an increase in the intercritical annealing temperature. The tensile test results showed that the steel with a higher fraction of retained austenite had relatively high hydrogen embrittlement resistance because the retained austenite acts as an irreversible hydrogen trap site. As the amount of pre-strain was increased, the hydrogen embrittlement resistance decreased notably due to an increase in the dislocation density and strain-induced martensite transformation.

Słowa kluczowe

EN

medium-manganese steel; hydrogen embrittlement; electrochemical charging; pre-strain; slow strain-rate tensile test; SSRT

• 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: 2022
• Tom: Vol. 67, iss. 4
• Strony: 1491--1495
• Opis fizyczny: Bibliogr. 25 poz., fot., rys.

Twórcy

autor

Kim Sang-Gyu

• Seoul National University of Science and Technology, Department of Materials Science and Engineering, Seoul, 01811, Republic of Korea

• https://orcid.org/0000-0003-2237-8517

autor

Yoon Young-Chul

• Seoul National University of Science and Technology, Department of Materials Science and Engineering, Seoul, 01811, Republic of Korea

• https://orcid.org/0000-0003-3487-2520

autor

Ko Seok-Woo

• Seoul National University of Science and Technology, Department of Materials Science and Engineering, Seoul, 01811, Republic of Korea

• https://orcid.org/0000-0001-6317-8808

autor

Hwang Byoungchul

• Seoul National University of Science and Technology, Department of Materials Science and Engineering, Seoul, 01811, Republic of Korea

• https://orcid.org/0000-0001-6330-4747

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Uwagi

1. The present study was supported by the Basic Science Research Program through the National Research Foundation of Korea, South Korea (NRF-2022R1A2C2004834) and by the Technology Innovation Program through the Ministry of Trade, Industry and Energy (MOTIE), South Korea (Grant No. 20015945).

2. Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).