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Material Research in Atomic Scale by Mössbauer Spectroscopy pp 187–198Cite as

Application of Mössbauer Spectroscopy and Positron Annihilation Spectroscopy For Testing Of Neutron-Irradiated Reactor Steels

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Part of the book series: NATO Science Series ((NAII,volume 94))

Abstract

The study is focused on the application of Mössbauer spectroscopy (MS) and positron annihilation spectroscopy (PAS) in the evaluation of the microstructure parameters of materials used in nuclear industry. The practical applications of these methods are documented on the evaluation of degradation processes currently in practise in nuclear power plant (NPP) reactor pressure vessel (RPV) steels. The samples originating from the Russian 15Kh2MFA and SvlOKhMFT steels, commercially used at WWER-440 reactors, were irradiated near the core at NPP Bohunice (Slovakia) with neutron fluences ranging from 7.8x1023 m-2 to 2.5x1024 m-2. The systematic changes in the MS and PAS spectra were observed mainly during the first period (1-year stay in irradiation containers under operating conditions by “speed factor” of about 10). A possible explanation could be due to the changes caused by precipitation of elements like Cu or Cr mainly in carbides to the surface. These MS results confirm that the close environment of Fe atoms in b.c.c. lattice of RPV steels remains almost stable after initial changes and perhaps could be correlated with the ductile-brittle transition temperature curve from mechanical tests.

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Author information

Authors and Affiliations

  1. Department of Nuclear Physics and Technology, Slovak University of Technology, Ilkovičova 3, 81219, Bratislava, Slovakia

    V. Slugeň, J. Lipka, J. Haščík, R. Gröne, I. Tóth, P. Uváčik, A. Zeman & K. Vitázek

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  1. V. Slugeň
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  2. J. Lipka
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  3. J. Haščík
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  4. R. Gröne
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  5. I. Tóth
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  6. P. Uváčik
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  7. A. Zeman
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  8. K. Vitázek
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Editor information

Editors and Affiliations

  1. Department of Experimental Physics, Palacký University, Olomouc, Czech Republic

    Miroslav Mashlan

  2. Department of Nuclear Physics and Technology, Slovak University of Technology, Bratislava, Slovakia

    Marcel Miglierini

  3. Zweites Physikalisches Institut, Universität Göttingen, Göttingen, Germany

    Peter Schaaf

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Slugeň, V. et al. (2003). Application of Mössbauer Spectroscopy and Positron Annihilation Spectroscopy For Testing Of Neutron-Irradiated Reactor Steels. In: Mashlan, M., Miglierini, M., Schaaf, P. (eds) Material Research in Atomic Scale by Mössbauer Spectroscopy. NATO Science Series, vol 94. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0151-9_20

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  • DOI: https://doi.org/10.1007/978-94-010-0151-9_20

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-1-4020-1197-9

  • Online ISBN: 978-94-010-0151-9

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