Publication result detail

Interaction of fatigue and creep in MAR-M 247 superalloy

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

Original Title

Interaction of fatigue and creep in MAR-M 247 superalloy

English Title

Interaction of fatigue and creep in MAR-M 247 superalloy

Type

Scopus Article

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

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

Key words in English

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

Authors

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

RIV year

2021

Released

19.02.2020

Publisher

Elsevier B.V.

ISBN

2452-3216

Periodical

Procedia Structural Integrity

Volume

23

Number

1

State

Republic of Italy

Pages from

197

Pages to

202

Pages count

6

URL

https://www.sciencedirect.com/science/article/pii/S2452321620301451

Full text in the Digital Library

http://hdl.handle.net/11012/193515

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",
  journal="Procedia Structural Integrity",
  year="2020",
  volume="23",
  number="1",
  pages="197--202",
  doi="10.1016/j.prostr.2020.01.086",
  issn="2452-3216",
  url="https://www.sciencedirect.com/science/article/pii/S2452321620301451"
}

Documents

1-s2.0-S2452321620301451-main