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Operando time- and space-resolved high-energy X-ray diffraction measurement to understand hydrogen-microstructure interactions in duplex stainless steel

Örnek, Cem ; Müller, Timo ; Kivisäkk, Ulf ; Zhang, Fan ; Långberg, Marie ; Lienert, Ulrich ; Hwang, Ki Hwan ; Lundgren, Edvin LU and Pan, Jinshan (2020) In Corrosion Science 175.
Abstract

Local strain development in the microstructure of a commercial 25Cr-7Ni super duplex stainless steel was mapped using high-energy x-ray diffraction during cathodic hydrogen charging under constant uniaxial load. The infusion of hydrogen resulted in tensile strains in austenite grains, one order of magnitude larger than those in the ferrite. Most strain evolution occurred at the near-surface, with compensating compressive forces developed in underlying regions, with up to two-times more compression occurring in the ferrite than the austenite. The strains along the loading axis were more pronounced than in the transverse direction, in which mostly compressive strains developed in the ferrite.

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author
; ; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Austenite spacing, High-energy x-ray diffraction, Hydrogen embrittlement, Hydrogen infusion, Super duplex stainless steel
in
Corrosion Science
volume
175
article number
108899
publisher
Elsevier
external identifiers
  • scopus:85088976843
ISSN
0010-938X
DOI
10.1016/j.corsci.2020.108899
language
English
LU publication?
yes
id
0ef5c870-9980-4833-bda0-c478c8a699ed
date added to LUP
2020-08-11 12:33:21
date last changed
2023-12-04 19:25:06
@article{0ef5c870-9980-4833-bda0-c478c8a699ed,
  abstract     = {{<p>Local strain development in the microstructure of a commercial 25Cr-7Ni super duplex stainless steel was mapped using high-energy x-ray diffraction during cathodic hydrogen charging under constant uniaxial load. The infusion of hydrogen resulted in tensile strains in austenite grains, one order of magnitude larger than those in the ferrite. Most strain evolution occurred at the near-surface, with compensating compressive forces developed in underlying regions, with up to two-times more compression occurring in the ferrite than the austenite. The strains along the loading axis were more pronounced than in the transverse direction, in which mostly compressive strains developed in the ferrite.</p>}},
  author       = {{Örnek, Cem and Müller, Timo and Kivisäkk, Ulf and Zhang, Fan and Långberg, Marie and Lienert, Ulrich and Hwang, Ki Hwan and Lundgren, Edvin and Pan, Jinshan}},
  issn         = {{0010-938X}},
  keywords     = {{Austenite spacing; High-energy x-ray diffraction; Hydrogen embrittlement; Hydrogen infusion; Super duplex stainless steel}},
  language     = {{eng}},
  publisher    = {{Elsevier}},
  series       = {{Corrosion Science}},
  title        = {{Operando time- and space-resolved high-energy X-ray diffraction measurement to understand hydrogen-microstructure interactions in duplex stainless steel}},
  url          = {{http://dx.doi.org/10.1016/j.corsci.2020.108899}},
  doi          = {{10.1016/j.corsci.2020.108899}},
  volume       = {{175}},
  year         = {{2020}},
}