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In-service degradation of 20Kh13 steel for blades of steam turbines of thermal power plants

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Materials Science Aims and scope

We compare 20Kh13 steel in the intact state and after 3∙105 h of operation in blades of the low-pressure cylinders of steam turbines by the mechanisms of fracture, structural, mechanical, corrosion, and stress corrosion properties. It is shown that, as a result of operation, steel hardens and becomes less plastic, its corrosion characteristics, and the parameters of fatigue and cyclic crack-growth resistance significantly deteriorate.

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Authors and Affiliations

  1. Karpenko Physicomechanical Institute, Ukrainian National Academy of Sciences, Lviv, Ukraine

    H. M. Nykyforchyn & O. Z. Student

  2. Luts’k National Technical University, Luts’k, Ukraine

    Yu. M. Tkachuk

Authors
  1. H. M. Nykyforchyn
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  2. Yu. M. Tkachuk
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  3. O. Z. Student
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Correspondence to O. Z. Student.

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Translated from Fizyko-Khimichna Mekhanika Materialiv, Vol. 47, No. 4, pp. 28–35, July–August, 2011.

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Nykyforchyn, H.M., Tkachuk, Y.M. & Student, O.Z. In-service degradation of 20Kh13 steel for blades of steam turbines of thermal power plants. Mater Sci 47, 447–456 (2012). https://doi.org/10.1007/s11003-012-9415-z

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