High Cycle Fatigue Data Transferability of MAR-M 247 Superalloy from Separately Cast Specimens to Real Gas Turbine Blade

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F20%3A00534779" target="_blank" >RIV/68081723:_____/20:00534779 - isvavai.cz</a>
Result on the web
<a href="https://www.mdpi.com/2075-4701/10/11/1460" target="_blank" >https://www.mdpi.com/2075-4701/10/11/1460</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/met10111460" target="_blank" >10.3390/met10111460</a>

Result language
angličtina
Original language name
High Cycle Fatigue Data Transferability of MAR-M 247 Superalloy from Separately Cast Specimens to Real Gas Turbine Blade
Original language description
Cast polycrystalline superalloys are widely used for critical components in aerospace andnautomotive industries, such as turbine blades or turbocharges. Therefore, their fatigue endurancenbelongs to one of the most essential mechanical characteristics. Full-scale testing of such componentsninvolves great technical difficulties and requires significant experimental effort. The present studynevaluates the effects of microstructural parameters with respect to representative fatigue testing of ancast turbine blade by separately cast specimens. For that purpose, the cast polycrystalline MAR-M 247nNi-based superalloy was investigated in the following conditions: (i) specimens extracted from a realngas turbine blade, specimens separately cast into the mould with (ii) top or (iii) bottom filling systems.nObtained diverse microstructures allowed us to assess the effect of grain size, porosity, and texture onnfatigue performance. The tests were held at a symmetrical loading regime at temperature 800 °Cnin laboratory air. The results indicate that the level of porosity is a dominant structural parameterndetermining the fatigue endurance, while grain size and texture effects were of minor importancencontributing mainly to fatigue life scatter.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20301 - Mechanical engineering

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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