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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F17%3APU124345" target="_blank" >RIV/00216305:26620/17:PU124345 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.engfailanal.2017.08.002" target="_blank" >https://doi.org/10.1016/j.engfailanal.2017.08.002</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.engfailanal.2017.08.002" target="_blank" >10.1016/j.engfailanal.2017.08.002</a>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20506 - Coating and films

Projekt

<a href="/cs/project/LQ1601" target="_blank" >LQ1601: CEITEC 2020</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

ENGINEERING FAILURE ANALYSIS

ISSN

1350-6307

e-ISSN

1873-1961

Svazek periodika

neuveden

Číslo periodika v rámci svazku

82

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

848-854

Kód UT WoS článku

000413323400075

EID výsledku v databázi Scopus

2-s2.0-85028356539