Thermomechanical and isothermal fatigue properties of MAR-M247 superalloy

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

Thermomechanical and isothermal fatigue properties of MAR-M247 superalloy

Original language description

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.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20501 - Materials engineering

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

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

Name of the periodical

Theoretical and Applied Fracture Mechanics

ISSN

0167-8442

e-ISSN

1872-7638

Volume of the periodical

131

Issue of the periodical within the volume

Jun

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

14

Pages from-to

104443

UT code for WoS article

001238757600001

EID of the result in the Scopus database

2-s2.0-85191446948