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Mechanism of the α-Zr to hexagonal-ZrO transformation and its impact on the corrosion performance of nuclear Zr alloys

Abstract:

Displacive transformations have been widely reported in metals, alloys and ceramics, but rarely reported to be important in the aqueous corrosion of alloys. We report here our analysis of the formation of the hexagonal-ZrO suboxide during the aqueous corrosion of α-Zr alloys and propose this to be a paraequilibrium displacive transformation with the rate controlled by oxygen diffusion. Two orientation relationships were identified between α-Zr and hexagonal-ZrO, (0002)α−Zr∥(1¯011)h−ZrO and [2...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1016/j.actamat.2019.08.051

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Materials
Role:
Author
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Institution:
University of Oxford
Division:
MPLS
Department:
Engineering Science
Role:
Author
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Institution:
University of Oxford
Division:
MPLS
Department:
Materials
Role:
Author
ORCID:
0000-0002-5599-866X
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Materials
Role:
Author
ORCID:
0000-0002-3638-1445
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John Fell Fund More from this funder
Publisher:
Elsevier Publisher's website
Journal:
Acta Materialia Journal website
Volume:
179
Pages:
328-341
Publication date:
2019-08-29
Acceptance date:
2019-08-27
DOI:
EISSN:
1873-2453
ISSN:
1359-6454
Language:
English
Keywords:
Pubs id:
1053757
Local pid:
pubs:1053757
Deposit date:
2020-01-29

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