New insights into the improvement of hydrogen embrittlement resistance of heat-treated carbon steels by shot peening

Magdalena Eskinja; Julia Aistleitner; Gerald Winter; Holger Schnideritsch; Jürgen Klarner; Vsevolod I. Razumovskiy; Philipp Hammer; Gregor Mori

doi:10.1016/j.surfcoat.2025.132771

New insights into the improvement of hydrogen embrittlement resistance of heat-treated carbon steels by shot peening

Magdalena Eskinja
, Julia Aistleitner
, Gerald Winter
, Holger Schnideritsch
, Jürgen Klarner
, Vsevolod I. Razumovskiy
, Philipp Hammer
, Gregor Mori

Chair of General and Analytical Chemistry (120)

Research output: Contribution to journal › Article › Research › peer-review

Abstract

The effectiveness of shot peening in suppressing hydrogen embrittlement (HE) of the heat-treated steels with different strength levels, 790 MPa (115 ksi) and 930 MPa (135 ksi), was comprehensively investigated. A plastically deformed layer on the surface facilitated an increased number of dislocations and refined grain
morphology. This hindered hydrogen transportation, as confirmed by the results of electrochemical permeation, exhibiting a decrease in the effective diffusion coefficient up to 47 %. The trapping behaviour of the steels scrutinized through Thermal Desorption Spectroscopy (TDS) proposed that dislocations are primary traps. Along with this, residual compressive stresses (RCS) were introduced into the materials, reaching a maximum of

Original language	English
Article number	132771
Number of pages	15
Journal	Surface & coatings technology
Volume	516.2025
Issue number	15 November
DOIs	https://doi.org/10.1016/j.surfcoat.2025.132771
Publication status	E-pub ahead of print - 9 Oct 2025

Keywords

Hydrogen embrittlement
Martensitic high strength steel
Shot Peeening

Access to Document

10.1016/j.surfcoat.2025.132771

Cite this

Eskinja, M., Aistleitner, J., Winter, G., Schnideritsch, H., Klarner, J., Razumovskiy, V. I., Hammer, P., & Mori, G. (2025). New insights into the improvement of hydrogen embrittlement resistance of heat-treated carbon steels by shot peening. Surface & coatings technology, 516.2025(15 November), Article 132771. Advance online publication. https://doi.org/10.1016/j.surfcoat.2025.132771

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abstract = "The effectiveness of shot peening in suppressing hydrogen embrittlement (HE) of the heat-treated steels with different strength levels, 790 MPa (115 ksi) and 930 MPa (135 ksi), was comprehensively investigated. A plastically deformed layer on the surface facilitated an increased number of dislocations and refined grain morphology. This hindered hydrogen transportation, as confirmed by the results of electrochemical permeation, exhibiting a decrease in the effective diffusion coefficient up to 47 \%. The trapping behaviour of the steels scrutinized through Thermal Desorption Spectroscopy (TDS) proposed that dislocations are primary traps. Along with this, residual compressive stresses (RCS) were introduced into the materials, reaching a maximum of ",

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AU - Eskinja, Magdalena

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AU - Mori, Gregor

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