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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20301 - Mechanical engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Metals

ISSN

2075-4701

e-ISSN

—

Svazek periodika

10

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

16

Strana od-do

1460

Kód UT WoS článku

000593263400001

EID výsledku v databázi Scopus

2-s2.0-85094857586