Advanced
search

To read this content please select one of the options below:

Effects of the cementite morphology on the hydrogen trapping behavior in the pipeline steel

Yanqi Tu (Beijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, China)
Saiyu Liu (Beijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, China)
Rongjian Shi (Beijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, China)
Shani Yang (Beijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, China)
Kewei Gao (Beijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, China)
Xiaolu Pang (Beijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, China and School of Mathematics and Physics, University of Science and Technology Beijing, Beijing, China)

Anti-Corrosion Methods and Materials

ISSN: 0003-5599

Article publication date: 26 May 2023

Issue publication date: 13 June 2023

199

Abstract

Purpose

The purpose of this study is to investigate the effects of the cementite morphology on the hydrogen trapping behavior in low-alloy pipeline steel.

Design/methodology/approach

In this study, the hydrogen trapping behavior in low-alloy pipeline steel was quantitatively studied by a combination of microstructural observations, electrochemical hydrogen permeation experiments and thermal desorption spectroscopy (TDS) analyses.

Findings

P-1 and P-2 steels are two samples with different microstructures. The morphology of cementite precipitates in the P-1 and P-2 steels was different. Lamellar cementite is present in P-2 steel and only granular cementite in P-1 steel, which led to a better irreversible hydrogen trapping ability of P-2 steel, which was confirmed by subsequent hydrogen permeation and TDS experiments.

Originality/value

The study of these deep hydrogen trap sites is helpful in improving the hydrogen embrittlement resistance of low-alloy pipeline steels.

Keywords

Acknowledgements

The authors acknowledge the financial support received from the Science Center for Gas Turbine Project (No. P2022-B-IV-008–001) and National Natural Science Foundation of China (Nos. 51922002 and 52201060).

Declaration of competing interest: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Citation

Tu, Y., Liu, S., Shi, R., Yang, S., Gao, K. and Pang, X. (2023), "Effects of the cementite morphology on the hydrogen trapping behavior in the pipeline steel", Anti-Corrosion Methods and Materials, Vol. 70 No. 4, pp. 141-148. https://doi.org/10.1108/ACMM-02-2023-2761

Publisher

:

Emerald Publishing Limited

Copyright © 2023, Emerald Publishing Limited

Related articles

Manage cookies

We’re listening — tell us what you think

Join us on our journey