Hydrogen permeation into duplex steel under compressive and tensile stresses: Symmetric lattice swelling and asymmetric stress redistribution

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F25%3A00639334" target="_blank" >RIV/68081723:_____/25:00639334 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0010938X25006092?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0010938X25006092?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.corsci.2025.113282" target="_blank" >10.1016/j.corsci.2025.113282</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Hydrogen permeation into duplex steel under compressive and tensile stresses: Symmetric lattice swelling and asymmetric stress redistribution

Popis výsledku v původním jazyce

A fundamental understanding of how mechanical stress influences hydrogen diffusion is essential for developing strategies to mitigate hydrogen embrittlement of structural materials. This study investigates the effect of externally applied stress on hydrogen uptake in 2205 duplex stainless steel, an industrially relevant material with a heterogeneous, dual-phase microstructure. A four-point bent sample is subjected to in-situ electrolytic hydrogen charging for four hours while being analyzed via high-energy synchrotron cross-sectional X-ray microdiffraction, enabling time- and depth-resolved characterization of strain-free lattice parameters and internal stresses. The results reveal symmetric lattice expansion within the tensile- and compressively-stressed sample regions in both ferrite and austenite phases to a depth of similar to 100 mu m. This lattice swelling shifts the in-plane stress components toward more compressive levels within the hydrogen-affected regions. As a result, tensile stresses are relaxed and compressive stresses moderately increase on respective sides of the sample, as verified by finite element simulations. The findings call into question models suggesting that the surface treatments and compressive residual stresses can be used to reduce hydrogen ingress into metals.

Název v anglickém jazyce

Hydrogen permeation into duplex steel under compressive and tensile stresses: Symmetric lattice swelling and asymmetric stress redistribution

Popis výsledku anglicky

A fundamental understanding of how mechanical stress influences hydrogen diffusion is essential for developing strategies to mitigate hydrogen embrittlement of structural materials. This study investigates the effect of externally applied stress on hydrogen uptake in 2205 duplex stainless steel, an industrially relevant material with a heterogeneous, dual-phase microstructure. A four-point bent sample is subjected to in-situ electrolytic hydrogen charging for four hours while being analyzed via high-energy synchrotron cross-sectional X-ray microdiffraction, enabling time- and depth-resolved characterization of strain-free lattice parameters and internal stresses. The results reveal symmetric lattice expansion within the tensile- and compressively-stressed sample regions in both ferrite and austenite phases to a depth of similar to 100 mu m. This lattice swelling shifts the in-plane stress components toward more compressive levels within the hydrogen-affected regions. As a result, tensile stresses are relaxed and compressive stresses moderately increase on respective sides of the sample, as verified by finite element simulations. The findings call into question models suggesting that the surface treatments and compressive residual stresses can be used to reduce hydrogen ingress into metals.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Corrosion Science

ISSN

0010-938X

e-ISSN

1879-0496

Svazek periodika

257

Číslo periodika v rámci svazku

Dec

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

113282

Kód UT WoS článku

001568657800001

EID výsledku v databázi Scopus

2-s2.0-105014821935