Low cycle fatigue performance of Ni-based superalloy coated with complex thermal barrier coating
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F18%3APU128617" target="_blank" >RIV/00216305:26620/18:PU128617 - isvavai.cz</a>
Alternative codes found
RIV/68081723:_____/18:00491914 RIV/61389021:_____/18:00491914
Result on the web
<a href="https://doi.org/10.1016/j.matchar.2018.03.023" target="_blank" >https://doi.org/10.1016/j.matchar.2018.03.023</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.matchar.2018.03.023" target="_blank" >10.1016/j.matchar.2018.03.023</a>
Alternative languages
Result language
angličtina
Original language name
Low cycle fatigue performance of Ni-based superalloy coated with complex thermal barrier coating
Original language description
Thermal barrier coatings (TBCs) are widely applied to protect high-temperature components against high temperatures in harsh environments. Nineteen cylindrical specimens of Inconel 713LC were manufactured using the investment castings technique, and 10 specimens were subsequently coated with a novel complex thermal barrier coating (TBC) system. The TBC system comprises a metallic CoNiCrAlY bond coat (BC) and a complex ceramic top coat (TC). The TC is a mixture of a near eutectic nanocrystalline ceramic made of zirconia (ZrO2), alumina (Al2O3), silica (SiO2) and conventional yttria stabilized zirconia (YSZ) ceramic in the ratio of 50/50 in wt%. Low cycle fatigue (LCF) tests were carried out in a symmetrical push-pull cycle under strain control at 900 °C. Cyclic hardening/softening curves, cyclic stress-strain curves and fatigue life curves of the TBC-coated and uncoated material were assessed. Fatigue life curves in total strain representation showed transient behaviour. Fracture surfaces and polished sections parallel to the loading axis of the TBC-coated and uncoated specimens prior and after cyclic loading were observed by means of scanning electron microscopy (SEM) to study the degradation mechanisms during high-temperature LCF. TBC delamination was observed at the TC/BC interface, and rafting of precipitates occurred after high-temperature exposure. The microstructural investigations further the discussion of the differences in the stress-strain response and the fatigue life of the TBC-coated and uncoated superalloy.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20301 - Mechanical engineering
Result continuities
Project
<a href="/en/project/GA15-20991S" target="_blank" >GA15-20991S: Plasma deposition, microstructural and thermo-mechanical stability of environmental barrier coatings</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
MATERIALS CHARACTERIZATION
ISSN
1044-5803
e-ISSN
1873-4189
Volume of the periodical
neuveden
Issue of the periodical within the volume
139
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
347-354
UT code for WoS article
000431469300037
EID of the result in the Scopus database
2-s2.0-85044127093