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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

Hydrogen Embrittlement Resistance of an Optimized Additively Manufactured Austenitic Stainless Steel from Recycled Sources

by
Mattia Cabrioli
1,*,
María Silva Colmenero
1,
Matteo Vanazzi
1,
Luisa E. Mondora
1,2,
Gianluca Acquistapace
2,
Fabio Esposito
3 and
Michela Giovanardi
3
1
f3nice, Via Roccoli, 252, 23010 Piantedo, SO, Italy
2
Valland SpA, Via Roccoli, 252, 23010 Piantedo, SO, Italy
3
TEC Eurolab S.r.l, Viale Europa, 40, 41011 Campogalliano, MO, Italy
*
Author to whom correspondence should be addressed.
Corros. Mater. Degrad. 2025, 6(3), 34; https://doi.org/10.3390/cmd6030034
Submission received: 13 June 2025 / Revised: 12 July 2025 / Accepted: 18 July 2025 / Published: 26 July 2025
(This article belongs to the Special Issue Hydrogen Embrittlement of Modern Alloys in Advanced Applications)
Versions Notes

Abstract

In the framework of hydrogen production and storage for clean energy generation, the resistance to hydrogen embrittlement of a newly developed austenitic stainless steel is presented. Gas-atomized metal powders prepared from secondary-sourced metals were employed to manufacture test specimens with Laser Powder Bed Fusion (LPBF) technology. After machining and exposure to a controlled, pressurized hydrogen atmosphere at high temperature, the effect of hydrogen charging on the mechanical performance under static and dynamic conditions was investigated. The stabilizing effect of the optimized chemical composition is reflected in the absence of degradation effects on Yield Stress (YS), Ultimate Tensile Stress (UTS), and fatigue life observed for specimens exposed to hydrogen. Moreover, despite a moderate reduction in the elongation at fracture observed by increasing the hydrogen charging time, ductility loss calculated as Relative Reduction of Area (RRA) remains substantially unaffected by the duration of exposure to hydrogen and demonstrates that the austenitic steel is capable of resisting hydrogen embrittlement (HE).
Keywords: hydrogen embrittlement resistance; stainless steel; additive manufacturing (AM); laser powder bed fusion (LPBF); metal recycling hydrogen embrittlement resistance; stainless steel; additive manufacturing (AM); laser powder bed fusion (LPBF); metal recycling

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MDPI and ACS Style

Cabrioli, M.; Silva Colmenero, M.; Vanazzi, M.; Mondora, L.E.; Acquistapace, G.; Esposito, F.; Giovanardi, M. Hydrogen Embrittlement Resistance of an Optimized Additively Manufactured Austenitic Stainless Steel from Recycled Sources. Corros. Mater. Degrad. 2025, 6, 34. https://doi.org/10.3390/cmd6030034

AMA Style

Cabrioli M, Silva Colmenero M, Vanazzi M, Mondora LE, Acquistapace G, Esposito F, Giovanardi M. Hydrogen Embrittlement Resistance of an Optimized Additively Manufactured Austenitic Stainless Steel from Recycled Sources. Corrosion and Materials Degradation. 2025; 6(3):34. https://doi.org/10.3390/cmd6030034

Chicago/Turabian Style

Cabrioli, Mattia, María Silva Colmenero, Matteo Vanazzi, Luisa E. Mondora, Gianluca Acquistapace, Fabio Esposito, and Michela Giovanardi. 2025. "Hydrogen Embrittlement Resistance of an Optimized Additively Manufactured Austenitic Stainless Steel from Recycled Sources" Corrosion and Materials Degradation 6, no. 3: 34. https://doi.org/10.3390/cmd6030034

APA Style

Cabrioli, M., Silva Colmenero, M., Vanazzi, M., Mondora, L. E., Acquistapace, G., Esposito, F., & Giovanardi, M. (2025). Hydrogen Embrittlement Resistance of an Optimized Additively Manufactured Austenitic Stainless Steel from Recycled Sources. Corrosion and Materials Degradation, 6(3), 34. https://doi.org/10.3390/cmd6030034

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