Internal Friction Study on the Influence of Pre-Deformation on Hydrogen Embrittlement Sensitivity of Dual-Phase Steel

• Autorzy: Pang Qihang , Geng Cong , Wang Jiaji , Li Weijuan , Guo Jing , Yu Xiaoming

Identyfikatory

DOI

10.24425/amm.2022.141057

• Języki publikacji: EN

Abstrakty

EN

In this study, an electrochemical method was used to permeate hydrogen through annealed DP590 steel under various pre-strain conditions (0-15%). Stress-strain and internal friction-temperature curves of the dual phase (DP) steel were obtained from slow strain-rate tensile tests and internal friction measurements, respectively. The diffusion of interstitial atoms, formation of Cottrell atmospheres, and embrittlement mechanism of DP steel were investigated under different prestress conditions before and after hydrogen permeation. The results show that the tensile strength of DP steel first decreases and then increases and the elongation sharply decreases with increasing pre-strain. The strength and ductility present similar trends with changes in pre-strain before and after hydrogen charging, however, after hydrogen charging, an obvious increase in tensile strength and decrease in elongation are observed. Furthermore, the γ peak amplitude decreases and the Snoek-Ke-Koster (SKK) peak amplitude increases with increasing internal pre-strain according to the friction-temperature curve. The γ peak and SKK peak exhibit the same trends with increasing pre-strain before and after hydrogen charging and both the γ peak and SKK peak decrease with hydrogen charging. The dislocation density in DP steel increases after hydrogen charging.

Słowa kluczowe

EN

dual phase steel; hydrogen embrittlement; γ peak; SKK peak; dislocation density

• 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: 1315--1324
• Opis fizyczny: Bibliogr. 27 poz., fot., rys., tab.

Twórcy

autor

Pang Qihang

• University of Science and Technology Liaoning, School of Materials and Metallurgy, Anshan Liaoning, 114051, China
• State Key Laboratory of Metal Material for Marine Equipment and Application, Anshan Liaoning, 114009, China

• https://orcid.org/0000-0001-5375-375X

autor

Geng Cong

• University of Science and Technology Liaoning, School of Materials and Metallurgy, Anshan Liaoning, 114051, China
• State Key Laboratory of Metal Material for Marine Equipment and Application, Anshan Liaoning, 114009, China

• https://orcid.org/0000-0002-6837-8603

autor

Wang Jiaji

• State Key Laboratory of Metal Material for Marine Equipment and Application, Anshan Liaoning, 114009, China

• https://orcid.org/0000-0002-4860-6242

autor

Li Weijuan

• University of Science and Technology Liaoning, School of Materials and Metallurgy, Anshan Liaoning, 114051, China
• State Key Laboratory of Metal Material for Marine Equipment and Application, Anshan Liaoning, 114009, China

• https://orcid.org/0000-0003-1963-9763

autor

Guo Jing

• University of Science and Technology Liaoning, School of Materials and Metallurgy, Anshan Liaoning, 114051, China
• State Key Laboratory of Metal Material for Marine Equipment and Application, Anshan Liaoning, 114009, China

• https://orcid.org/0000-0002-7355-7358

autor

Yu Xiaoming

• Shenyang Ligong University, School of Material Science and Engineering, Shenyang Liaoning, 110159, China

• https://orcid.org/0000-0003-3352-0507

Bibliografia

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Uwagi

1. This study was funded by the national natural Science Foundation of China (Grant No. 52004122), the State Key Laboratory of Marine Equipment made of Metal Material and Application (Grant No. SKLMEA-USTL-201907), the Guidance plan of Natural Science Foundation of Liaoning Province (Grant No. 2019-ZD-0028 and 2020JH1/10100001), and the Key Projects from Liaoning Education Department (Grant No. 2019FWDF03 and 2020LNQN19 ).

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).