Publication detail

Interaction of fatigue and creep in MAR-M 247 superalloy

HORNÍK, V. FINTOVÁ, S. ŠMÍD, M. HUTAŘ, P. HRBÁČEK, K. KUNZ, L.

English title

Interaction of fatigue and creep in MAR-M 247 superalloy

Type

journal article in Scopus

Language

en

Original abstract

Lifetime of MAR-M 247 Ni-based superalloy was experimentally studied under high-frequency cyclic loading (120 Hz) with constant tensile mean stress σm = 300 MPa at temperature 900 °C in air. The stress amplitude σa was changed in order to investigate the superalloy lifetime in a wide range of conditions, from pure creep to pure fatigue. The superposition of the stress amplitude on the mean stress does not influence the specimen lifetime until a threshold value is reached. Scanning electron microscopy was utilized for the fracture surface observation with the aim to identify the governing damage mechanisms for particular test conditions.

English abstract

Lifetime of MAR-M 247 Ni-based superalloy was experimentally studied under high-frequency cyclic loading (120 Hz) with constant tensile mean stress σm = 300 MPa at temperature 900 °C in air. The stress amplitude σa was changed in order to investigate the superalloy lifetime in a wide range of conditions, from pure creep to pure fatigue. The superposition of the stress amplitude on the mean stress does not influence the specimen lifetime until a threshold value is reached. Scanning electron microscopy was utilized for the fracture surface observation with the aim to identify the governing damage mechanisms for particular test conditions.

Keywords in English

creep/fatigue interaction; superalloy; MAR-M 247; high temperature

Released

19.02.2020

Publisher

Elsevier B.V.

ISSN

2452-3216

Volume

23

Number

1

Pages from–to

197–202

Pages count

6

BIBTEX


@article{BUT164315,
  author="Vít {Horník} and Stanislava {Fintová} and Miroslav {Šmíd} and Pavel {Hutař} and Karel {Hrbáček} and Ludvík {Kunz},
  title="Interaction of fatigue and creep in MAR-M 247 superalloy",
  year="2020",
  volume="23",
  number="1",
  month="February",
  pages="197--202",
  publisher="Elsevier B.V.",
  issn="2452-3216"
}