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Assessment of causes of fracture in 14Kh17N2 steel blades of GTK-25I gas-pum** unit axial-flow compressors

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Abstract

Causes of fracture of the martensitic-ferritic steel blades of the variable inlet guide vane for an axial-flow compressor of the gas pum** unit GTK-25I have been studied. There are several stages of blade fracture: corrosion, fatigue, and fracture. At the initial state, corrosion damage occurs at the martensite-ferrite interface, which is followed by intragranular corrosion damage along martensite needles and fatigue failure within the grain bodies.

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Authors and Affiliations

  1. Paton Electric Welding Institute, National Academy of Sciences of Ukraine, Kiev, Ukraine

    K. A. Yushchenko, V. S. Savchenko & L. V. Chervyakova

  2. NAK “Neftegaz Ukrainy” State Company “Ukrtransgas”, Kiev, Ukraine

    V. I. Izbash & G. Solyanik

Authors
  1. K. A. Yushchenko
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  2. V. S. Savchenko
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  3. L. V. Chervyakova
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  4. V. I. Izbash
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  5. G. Solyanik
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Translated from Problemy Prochnosti, No. 5, pp. 129–133, September–October, 2008.

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Yushchenko, K.A., Savchenko, V.S., Chervyakova, L.V. et al. Assessment of causes of fracture in 14Kh17N2 steel blades of GTK-25I gas-pum** unit axial-flow compressors. Strength Mater 40, 597–600 (2008). https://doi.org/10.1007/s11223-008-9071-6

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  • DOI: https://doi.org/10.1007/s11223-008-9071-6

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