The hydrogen embrittlement behavior of ultra-high-strength boron steel with different prior austenite grain sizes

Yi Liu; Xianhong Han; Yi Yang; Haibing Yuan

doi:10.2991/978-94-6463-581-2_33

<Previous Article In Volume

Next Article In Volume>

The hydrogen embrittlement behavior of ultra-high-strength boron steel with different prior austenite grain sizes

Authors

Yi Liu¹, Xianhong Han¹^{, *}, Yi Yang², Haibing Yuan²

¹School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200030, China

²JiangSu Sunway Precision Forging Co., Ltd, Yancheng, 224100, China

^*Corresponding author. Email: hanxh@sjtu.edu.cn

Corresponding Author

Xianhong Han

Available Online 7 December 2024.

DOI: 10.2991/978-94-6463-581-2_33 How to use a DOI?
Keywords: Ultra-high strength steel; Hydrogen embrittlement; PAG sizes; Hydrogen microprint technique
Abstract: The hydrogen embrittlement (HE) of ultra-high-strength boron steel with different prior austenite grain (PAG) sizes was investigated. By adjusting soaking times and austenitizing temperatures, samples with varying PAG sizes were obtained. The PAG size and dislocation density of the samples were measured using electron backscatter diffraction technology. Hydrogen microprint technology was employed to further examine the impact of PAG size on the HE behavior. The sensitivity of HE decreased with the increasing of PAG size. It can be attributed to the combination of PAG size and dislocation density. The reduction in PAG size leads to higher dislocation density which increases the sensitivity of HE and facilitates the accumulation of hydrogen at the small PAG boundaries. This promotes local high hydrogen concentration, and ultimately resulting in the higher HE sensitivity.
Copyright: © 2024 The Author(s)
Open Access: Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Download article (PDF)

<Previous Article In Volume

Next Article In Volume>

Volume Title: Proceedings of the 7th International Conference on Advanced High Strength Steel and Press Hardening (ICHSU 2024)
Series: Atlantis Highlights in Material Sciences and Technology
Publication Date: 7 December 2024
ISBN: 978-94-6463-581-2
ISSN: 2590-3217
DOI: 10.2991/978-94-6463-581-2_33 How to use a DOI?
Open Access: Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

ris enw bib

TY  - CONF
AU  - Yi Liu
AU  - Xianhong Han
AU  - Yi Yang
AU  - Haibing Yuan
PY  - 2024
DA  - 2024/12/07
TI  - The hydrogen embrittlement behavior of ultra-high-strength boron steel with different prior austenite grain sizes
BT  - Proceedings of the 7th International Conference on Advanced High Strength Steel and Press Hardening (ICHSU 2024)
PB  - Atlantis Press
SP  - 267
EP  - 272
SN  - 2590-3217
UR  - https://doi.org/10.2991/978-94-6463-581-2_33
DO  - 10.2991/978-94-6463-581-2_33
ID  - Liu2024
ER  -

download .riscopy to clipboard