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Development of a Cr-Ni-Mo alloyed stress corrosion-resistant anchor bolt steel

Hailong Du (School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing, China and Technology Research Institute of Shanxi Jincheng Coal Group Co., Ltd., Shanxi, China)
Zengyao Chen (National Materials Corrosion and Protection Data Center, University of Science and Technology Beijing, Beijing, China)
Xiyan Wang (National Materials Corrosion and Protection Data Center, University of Science and Technology Beijing, Beijing, China)
Yongliang Li (School of Energy and Mining Engineering, China University of Mining and Technology-Beijing, Beijing, China)
Renshu Yang (School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing, China)
Zhiyong Liu (National Materials Corrosion and Protection Scientific Data Center, University of Science and Technology Beijing, Beijing, China and Hebei Special Equipment Supervision and Inspection Institute, Key Laboratory of Safety Evaluation of Steel Pipes and Fittings for State Market Regulation, Shijiazhuang, China)
Aibing Jin (School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing, China)
Xiaogang Li (National Materials Corrosion and Protection Scientific Data Center, University of Science and Technology Beijing, Beijing, China)

Anti-Corrosion Methods and Materials

ISSN: 0003-5599

Article publication date: 24 November 2023

Issue publication date: 2 January 2024

85

Abstract

Purpose

The purpose of this paper is to develop new types of anchor bolt materials by adding corrosion-resistant elements for alloying and microstructure regulation.

Design/methodology/approach

Three new anchor bolt materials were designed around the 1Ni system. The stress corrosion cracking resistance of the new materials was characterized by microstructure observation, electrochemical testing and slow strain rate tensile testing.

Findings

The strength of the new anchor bolt materials has been improved, and the stress corrosion sensitivity has been reduced. The addition of Nb makes the material exhibit excellent stress corrosion resistance under –1,200 mV conditions, but the expected results were not achieved when Nb and Sb were coupled.

Originality/value

The new anchor bolt materials designed around 1Ni have excellent stress corrosion resistance, which is the development direction of future materials. Nb allows the material to retain its ability to extend in hydrogen-evolution environments.

Keywords

Acknowledgements

The authors acknowledge the support of the Natural Science Foundation of China (No. 52071017) and National Science and Technology Plan Projects of State Administration for Market Regulation (No.2021MK021).

Citation

Du, H., Chen, Z., Wang, X., Li, Y., Yang, R., Liu, Z., Jin, A. and Li, X. (2024), "Development of a Cr-Ni-Mo alloyed stress corrosion-resistant anchor bolt steel", Anti-Corrosion Methods and Materials, Vol. 71 No. 1, pp. 1-11. https://doi.org/10.1108/ACMM-08-2023-2873

Publisher

:

Emerald Publishing Limited

Copyright © 2023, Emerald Publishing Limited

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