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Journal article

Characterization of the crack initiation and propagation in Alloy 600 with a cold-worked surface

Abstract:
The crack initiation on a cold-worked surface of Alloy 600, exposed to simulated pressurized water reactor primary water, was mechanistically studied through high-resolution characterization. Mechanical polishing introduced a thin recrystallization layer on the specimen surface, which lead to the crack initiation along highly-deformed recrystallization grain boundaries after preferential oxidation. Intergranular crack propagation occurred once the initiation cracks met the matrix grain boundaries under the external loading and the residual stress introduced by the prior 20% cold working. The controlling mechanism of SCC crack propagation was believed to be an intergranular selective oxidation mechanism.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1016/j.corsci.2019.03.014

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Materials
Sub department:
Materials
Department:
Unknown
Role:
Author


Publisher:
Elsevier
Journal:
Corrosion Science More from this journal
Volume:
152
Pages:
82-92
Publication date:
2019-03-13
Acceptance date:
2019-03-03
DOI:
ISSN:
0010-938X


Keywords:
Pubs id:
pubs:981488
UUID:
uuid:16b5c49f-b6f2-4894-a60b-361dba3f81fe
Local pid:
pubs:981488
Source identifiers:
981488
Deposit date:
2019-03-12

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