High-Temperature Low-Cycle Fatigue Behaviour of MAR-M247nCoated with Newly Developed Thermal and EnvironmentalnBarrier Coating

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F18%3A00499226" target="_blank" >RIV/68081723:_____/18:00499226 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1155/2018/9014975" target="_blank" >http://dx.doi.org/10.1155/2018/9014975</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1155/2018/9014975" target="_blank" >10.1155/2018/9014975</a>

Jazyk výsledku

angličtina

Název v původním jazyce

High-Temperature Low-Cycle Fatigue Behaviour of MAR-M247nCoated with Newly Developed Thermal and EnvironmentalnBarrier Coating

Popis výsledku v původním jazyce

This study investigates the strain-controlled low-cycle fatigue (LCF) behaviour of an untreated and surface-treated MAR-M247 superalloy in a symmetrical push-pull cycle with a constant strain rate at 900 degrees C in laboratory air. A newly developed experimental thermal and environmental barrier coating (TEBC) system, consisting of a 170m thick CoNiCrAlY bond coat (BC) and a bilayer ceramic top coat (TC), with an interlayer and an upper layer, was deposited using air plasma spray techniques. The ceramic interlayer with an average thickness of 77m was formed from agglomerated and sintered yttria-stabilized zirconia. An experimental mixture of mullite (Al6Si2O13) and hexacelsian (BaAl2Si2O8) at a ratio of 70/30vol.% was sprayed as the upper layer. The average thickness of the TC was 244m. The specimen sections were investigated using a TESCAN Lyra3 XMU scanning electron microscope (SEM) to characterise the microstructure of both the TEBC and the substrate material. The fatigue damage mechanisms in the TEBC-coated superalloy were studied. The fatigue life curves in the representation of the total strain amplitude versus the number of cycles to failure of the TEBC-coated and uncoated superalloy were assessed. TEBC was found to have a slight, positive effect on the fatigue life of MAR-M247.

Název v anglickém jazyce

High-Temperature Low-Cycle Fatigue Behaviour of MAR-M247nCoated with Newly Developed Thermal and EnvironmentalnBarrier Coating

Popis výsledku anglicky

This study investigates the strain-controlled low-cycle fatigue (LCF) behaviour of an untreated and surface-treated MAR-M247 superalloy in a symmetrical push-pull cycle with a constant strain rate at 900 degrees C in laboratory air. A newly developed experimental thermal and environmental barrier coating (TEBC) system, consisting of a 170m thick CoNiCrAlY bond coat (BC) and a bilayer ceramic top coat (TC), with an interlayer and an upper layer, was deposited using air plasma spray techniques. The ceramic interlayer with an average thickness of 77m was formed from agglomerated and sintered yttria-stabilized zirconia. An experimental mixture of mullite (Al6Si2O13) and hexacelsian (BaAl2Si2O8) at a ratio of 70/30vol.% was sprayed as the upper layer. The average thickness of the TC was 244m. The specimen sections were investigated using a TESCAN Lyra3 XMU scanning electron microscope (SEM) to characterise the microstructure of both the TEBC and the substrate material. The fatigue damage mechanisms in the TEBC-coated superalloy were studied. The fatigue life curves in the representation of the total strain amplitude versus the number of cycles to failure of the TEBC-coated and uncoated superalloy were assessed. TEBC was found to have a slight, positive effect on the fatigue life of MAR-M247.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20306 - Audio engineering, reliability analysis

Projekt

<a href="/cs/project/LM2015069" target="_blank" >LM2015069: Infrastruktura pro studium a aplikaci pokročilých materiálů</a><br>

Návaznosti

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

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Advances in Materials Science and Engineering

ISSN

1687-8434

e-ISSN

—

Svazek periodika

Vol.2018

Číslo periodika v rámci svazku

DEC

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

—

Kód UT WoS článku

000455610800001

EID výsledku v databázi Scopus

2-s2.0-85059967297