Publication detail

Failure analysis of casing of draft tube of turbine used in hydropower plant

HORYNOVÁ, M. KLAKURKOVÁ, L. ŠVEJCAR, J. JULIŠ, M. GEJDOŠ, P. ČELKO, L.

Original Title

Failure analysis of casing of draft tube of turbine used in hydropower plant

Type

journal article in Web of Science

Language

English

Original Abstract

Corrosion of massive components used in hydropower plants causes considerable technical problems and economic losses. Due to the corrosive environment and strong dynamic loading, such components must meet high demands. Quality of the components is essentially influenced by quality of material—chemical composition, correct metallurgical processes and also good practice of subsequent forming and welding technology. Aim of the analysis was to determine the failure cause of the massive casing of draft tube from turbine used in hydropower plant. The main part of this study was focused on detailed analysis of chemical composition and microstructural analysis of the failed component. Light microscopy and scanning electron microscopy techniques together with energy dispersive spectroscopy were used for assessment and detailed evaluation of present phases. Detailed analysis determined corrosion attack to be intergranular corrosion. Furthermore influence of deviations in chemical composition and presence of a typical titanium nitrides on corrosion resistance of material were identified.

Keywords

Failure analysis; Heat treatment; Cracks; Metallography; Inclusions

Authors

HORYNOVÁ, M.; KLAKURKOVÁ, L.; ŠVEJCAR, J.; JULIŠ, M.; GEJDOŠ, P.; ČELKO, L.

Released

9. 12. 2017

Publisher

Elsevier

Location

Spojené království Velké Británie a Severního Irska

ISBN

1350-6307

Periodical

ENGINEERING FAILURE ANALYSIS

Number

82

State

United Kingdom of Great Britain and Northern Ireland

Pages from

848

Pages to

854

Pages count

7

URL

https://doi.org/10.1016/j.engfailanal.2017.08.002

BibTex

@article{BUT138570,
  author="Miroslava {Horynová} and Lenka {Klakurková} and Jiří {Švejcar} and Martin {Juliš} and Pavel {Gejdoš} and Ladislav {Čelko}",
  title="Failure analysis of casing of draft tube of turbine used in
hydropower plant",
  journal="ENGINEERING FAILURE ANALYSIS",
  year="2017",
  number="82",
  pages="848--854",
  doi="10.1016/j.engfailanal.2017.08.002",
  issn="1350-6307",
  url="https://doi.org/10.1016/j.engfailanal.2017.08.002"
}