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High-temperature low-cycle fatigue and creep behaviour of nickel-based superalloys with heat-resistant coatings

  • J. Okrajni
  • , M. Cieśla
  • , L. Swadźba
  • Silesian University of Technology

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

The problems associated with nickel-based superalloys with heat-resisting coatings, as used in aerospace, have been addressed in this paper. The influence of the heat-resisting coating technology on both the fatigue and creep behaviour of the alloys has been shown. Low-cycle fatigue and creep tests have been performed. Lifetime conditions have been determined in relation to low-cycle fatigue, isothermal creep and creep at cyclically variable temperatures, as a function of the chemical composition of the coating, parameters of the thermal treatment and thickness of the coating. Possible processes and mechanisms of fracture are discussed.

Original languageEnglish
Pages (from-to)947-954
Number of pages8
JournalFatigue and Fracture of Engineering Materials and Structures
Volume21
Issue number8
DOIs
Publication statusPublished - 1998

Keywords

  • Creep
  • Fatigue crack behaviour
  • Fatigue life
  • Ni-base superalloys
  • Surface coatings

ASJC Scopus subject areas

  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering

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