Thermomechanical and isothermal fatigue properties of MAR-M247 superalloy

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F24%3A00585632" target="_blank" >RIV/68081723:_____/24:00585632 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0167844224001927?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0167844224001927?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.tafmec.2024.104443" target="_blank" >10.1016/j.tafmec.2024.104443</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Thermomechanical and isothermal fatigue properties of MAR-M247 superalloy

Popis výsledku v původním jazyce

Thermomechanical low-cycle fatigue (TMF) tests were performed on polycrystalline cast nickel-based superalloy nMAR-M247 under in-phase (IP) and out-of phase (OP) loading in the temperature range of 500–900 ◦C. A nconstant heating and cooling rate of 5 ◦C.s− 1 was selected. Furthermore, isothermal low-cycle fatigue (ILCF) tests nwith the same cycle period as TMF cycle were carried out at the maximal temperature of TMF cycle (900 ◦C). All ntests ran under strain control and fully reversed cycle on solid cylindrical specimens in laboratory air. High nresolution scanning electron microscopy and transmission electron microscopy were utilized to characterize the ndamage mechanism occurring during TMF and ILCF loading. The cyclic deformation and lifetime behaviour as nwell as damage mechanisms dependent on loading regime were examined. Results show that the TMF loading nhas a detrimental effect on the lifetime of MAR-M247. Lifetime reduction is most significant under IP loading. nThe fracture surfaces are characterized by typical striation fields, where the largest spacing between striations nwas observed for IP loading with prevailing intercrystalline cracking followed by OP and isothermal ILCF loading nwith transcrystalline crack propagation. To improve discussion of obtained results, experimental data were ncompared with damage and life prediction models.

Název v anglickém jazyce

Thermomechanical and isothermal fatigue properties of MAR-M247 superalloy

Popis výsledku anglicky

Thermomechanical low-cycle fatigue (TMF) tests were performed on polycrystalline cast nickel-based superalloy nMAR-M247 under in-phase (IP) and out-of phase (OP) loading in the temperature range of 500–900 ◦C. A nconstant heating and cooling rate of 5 ◦C.s− 1 was selected. Furthermore, isothermal low-cycle fatigue (ILCF) tests nwith the same cycle period as TMF cycle were carried out at the maximal temperature of TMF cycle (900 ◦C). All ntests ran under strain control and fully reversed cycle on solid cylindrical specimens in laboratory air. High nresolution scanning electron microscopy and transmission electron microscopy were utilized to characterize the ndamage mechanism occurring during TMF and ILCF loading. The cyclic deformation and lifetime behaviour as nwell as damage mechanisms dependent on loading regime were examined. Results show that the TMF loading nhas a detrimental effect on the lifetime of MAR-M247. Lifetime reduction is most significant under IP loading. nThe fracture surfaces are characterized by typical striation fields, where the largest spacing between striations nwas observed for IP loading with prevailing intercrystalline cracking followed by OP and isothermal ILCF loading nwith transcrystalline crack propagation. To improve discussion of obtained results, experimental data were ncompared with damage and life prediction models.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Theoretical and Applied Fracture Mechanics

ISSN

0167-8442

e-ISSN

1872-7638

Svazek periodika

131

Číslo periodika v rámci svazku

Jun

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

14

Strana od-do

104443

Kód UT WoS článku

001238757600001

EID výsledku v databázi Scopus

2-s2.0-85191446948