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

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

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

Original language description

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.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20501 - Materials engineering

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

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

Name of the periodical

Corrosion Science

ISSN

0010-938X

e-ISSN

1879-0496

Volume of the periodical

257

Issue of the periodical within the volume

Dec

Country of publishing house

GB - UNITED KINGDOM

Number of pages

8

Pages from-to

113282

UT code for WoS article

001568657800001

EID of the result in the Scopus database

2-s2.0-105014821935