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The role of microstructural development in the hydrothermal corrosion of cast and HIPed Stellite 6 analogues in simulated PWR conditions

Karimi, G.N.; Carrington, M.J.; Thomas, J.; Shipway, P.H.; Stewart, D.A.; Hussain, T.

Authors

G.N. Karimi

M.J. Carrington

J. Thomas

D.A. Stewart



Abstract

The corrosion behaviour of cast and HIPed Stellite 6 analogue materials in PWR-simulating conditions was investigated. The cast alloy exhibited localised corrosion at the boundary between the matrix and the M7C3 carbides, with this being attributed to chromium depletion in the matrix associated with the carbide growth. In contrast, the HIPed alloy exhibited no localised corrosion. The carbon content of the cast Stellite 6 analogue was right at the top end of the range indicated in the Stellite 6 specification: this results in a high fraction of carbides and a general depletion of the chromium content of the matrix.

Citation

Karimi, G., Carrington, M., Thomas, J., Shipway, P., Stewart, D., & Hussain, T. (2019). The role of microstructural development in the hydrothermal corrosion of cast and HIPed Stellite 6 analogues in simulated PWR conditions. Corrosion Science, 159, https://doi.org/10.1016/j.corsci.2019.108141

Journal Article Type Article
Acceptance Date Aug 6, 2019
Online Publication Date Aug 8, 2019
Publication Date Aug 8, 2019
Deposit Date Aug 23, 2019
Publicly Available Date Aug 9, 2020
Journal Corrosion Science
Print ISSN 0010-938X
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 159
Article Number 108141
DOI https://doi.org/10.1016/j.corsci.2019.108141
Keywords General Materials Science; General Chemistry; General Chemical Engineering
Public URL https://nottingham-repository.worktribe.com/output/2484285
Publisher URL https://www.sciencedirect.com/science/article/pii/S0010938X19305013?via%3Dihub

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