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Predicting Chromium Depletion of Nickel Base Alloys

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Proceedings of the 15th International Conference on Environmental Degradation of Materials in Nuclear Power Systems — Water Reactors

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Abstract

There are two so-called grain boundary chromium concentrations: the grain boundary chromium concentration at carbide free grain boundary sections and the interfacial chromium concentration at the interface between carbides and the matrix. Existing models for predicting grain boundary chromium depletion either predicts the former or the latter. A Monte Carlo based precipitation kinetics simulation approach has been developed to simulate the evolution of both the grain boundary and interfacial chromium concentration. Application of the method to Alloy 690 yields good agreement with experimental observations with regard to both the chromium depletion evolution and carbide precipitation kinetics. The effect of grain boundary character will also be discussed.

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Author information

Authors and Affiliations

  1. Department of Materials, Loughborough University, Loughborough, LE11 3TU, UK

    Youfa Yin, Feng Zhu & Roy Faulkner

  2. Rolls-Royce, P.O. Box 2000, Derby, DE21 7XX, UK

    Ed Miller, Paul Moreton, Ian Armson & Bryan Borradaile

Authors
  1. Youfa Yin
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  2. Feng Zhu
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  3. Roy Faulkner
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  4. Ed Miller
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  5. Paul Moreton
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  6. Ian Armson
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  7. Bryan Borradaile
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Editor information

Editors and Affiliations

  1. Oak Ridge National Laboratory, USA

    Jeremy T. Busby

  2. Electric Power Research Institute, USA

    Gabriel Ilevbare

  3. GE Global Research Center, USA

    Peter L. Andresen

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© 2011 TMS (The Minerals, Metals & Materials Society)

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Yin, Y. et al. (2011). Predicting Chromium Depletion of Nickel Base Alloys. In: Busby, J.T., Ilevbare, G., Andresen, P.L. (eds) Proceedings of the 15th International Conference on Environmental Degradation of Materials in Nuclear Power Systems — Water Reactors. Springer, Cham. https://doi.org/10.1007/978-3-319-48760-1_20

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