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Quantitative assessment of intergranular damage due to PWR primary water exposure in structural Ni-based alloys

Ter-Ovanessian, Benoît and Deleume, Julien and Cloué, Jean-Marc and Andrieu, Eric Quantitative assessment of intergranular damage due to PWR primary water exposure in structural Ni-based alloys. (2013) Corrosion Science, 67. 11-19. ISSN 0010-938X

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Official URL: http://dx.doi.org/10.1016/j.corsci.2012.09.048

Abstract

Two nickel-based alloys, alloy 718 and alloy 600, known to have different resistances to IGSCC, were exposed to a simulated PWR primary water environment at 360 °C for 1000 h. The intergranular oxidation damage was analyzed in detail using an original approach involving two characterization methods (Incremental Mechanical Polishing/Microcopy procedure and SIMS imaging) which yielded a tomographic analysis of the damage. Intergranular oxygen/oxide penetrations occurred either as connected or isolated penetrations deep under the external oxide/substrate interface as far as 10 μm for alloy 600 and only 4 μm for alloy 718. Therefore, assessing this damage precisely is essential to interpret IGSCC susceptibility.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF can be found at Corrosion Science website: http://www.sciencedirect.com/science/article/pii/S0010938X12005239
HAL Id:hal-00864144
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Other partners > AREVA (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
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Deposited By: cirimat webmestre
Deposited On:20 Sep 2013 12:12

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