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Evaluation of hydrogen embrittlement by the scratch method

Gang Wang (School of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou, China and Henan Key Engineering Laboratory for Anti-fatigue Manufacturing Technology, Zhengzhou University, Zhengzhou, China)
Zihan Wang (School of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou, China and Henan Key Engineering Laboratory for Anti-fatigue Manufacturing Technology, Zhengzhou University, Zhengzhou, China)
Yue Zhang (School of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou, China and Henan Key Engineering Laboratory for Anti-fatigue Manufacturing Technology, Zhengzhou University, Zhengzhou, China)
GuangTao Xu (School of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou, China and Henan Key Engineering Laboratory for Anti-fatigue Manufacturing Technology, Zhengzhou University, Zhengzhou, China)
MingHao Zhao (School of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou, China and Henan Key Engineering Laboratory for Anti-fatigue Manufacturing Technology, Zhengzhou University, Zhengzhou, China)
Yanmin Li (School of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou, China and Henan Key Engineering Laboratory for Anti-fatigue Manufacturing Technology, Zhengzhou University, Zhengzhou, China)

Anti-Corrosion Methods and Materials

ISSN: 0003-5599

Article publication date: 28 April 2022

Issue publication date: 3 June 2022

98

Abstract

Purpose

The purpose of this paper is to find a new method to evaluate the hydrogen embrittlement performance of heterogeneous materials and thin film materials.

Design/methodology/approach

The changes of hydrogen embrittlement properties of steel were studied by electrochemical hydrogen charging test and scratch test. The microstructure and properties of the alloy were analyzed by hardness tester, scanning electron microscope and three-dimensional morphology. The fracture toughness before and after hydrogen charging was calculated based on the scratch method.

Findings

The results showed that the hydrogen-induced hardening phenomenon occurs in the material after hydrogen charging. The scratch depth and width increased after hydrogen charging. The fracture toughness obtained by the scratch method showed that hydrogen reduces the fracture toughness of the material. The comparison error of fracture toughness calculated by indentation method was less than 5%.

Originality/value

The results show that the scratch method can evaluate the hydrogen embrittlement performance of the material. This method provides a possibility to evaluate the hydrogen embrittlement of thin-film and heterogeneous materials.

Keywords

Acknowledgements

The work was supported by the National Natural Science Foundation of China (Nos. 51801187, U1804254 and 11702252), the Major Science and Technology Projects of Henan Province (201400211200) and the Key Teachers Program for the University of Henan Province (2019GGJS005).

Citation

Wang, G., Wang, Z., Zhang, Y., Xu, G., Zhao, M. and Li, Y. (2022), "Evaluation of hydrogen embrittlement by the scratch method", Anti-Corrosion Methods and Materials, Vol. 69 No. 4, pp. 380-386. https://doi.org/10.1108/ACMM-02-2022-2611

Publisher

:

Emerald Publishing Limited

Copyright © 2022, Emerald Publishing Limited

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