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.

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, Article 108141. 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
• Contract Date: Aug 23, 2019