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Modelling of the degradation of Fe9Cr steels in high-temperature CO2

Abstract:
This article considers recent progress in modelling the degradation of Fe9Cr steels exposed to high-temperature CO2. Computational modelling is used to rationalise the mechanism of the so-called breakaway oxidation, which is shown here to be associated with the carburisation of the underlying Fe9Cr substrate of finite dimensions. Oxidation kinetics, non-steady-state carburisation kinetics, and the mass transport mechanisms are covered. The theoretical and numerical/analytical challenges are discussed, with possible ways forward being suggested. Thus, we demonstrate that the software systems built on Prof. Hillert’s legacy are maturing rapidly towards engineering tools which can be used to anticipate the degradation of complex multicomponent alloys in engineering situations of relevance and significant complexity.
Publication status:
Published
Peer review status:
Peer reviewed

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Files:
Publisher copy:
10.1007/s11669-025-01191-6

Authors

More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Materials
Role:
Author
ORCID:
0000-0002-8088-2562
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Materials
Role:
Author


Publisher:
Springer Nature
Journal:
Journal of Phase Equilibria and Diffusion More from this journal
Volume:
46
Issue:
2
Pages:
279-291
Publication date:
2025-05-08
Acceptance date:
2025-04-14
DOI:
EISSN:
1863-7345
ISSN:
1547-7037


Language:
English
Keywords:
Pubs id:
2122547
Local pid:
pubs:2122547
Source identifiers:
2949057
Deposit date:
2025-05-22
ARK identifier:

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