Fatigue crack growth resistance in nickel-base superalloy at elevated temperatures

Norio Kawagoishi, Qiang Chen, Hironobu Nisitani, Masahiro Goto, Hideho Tanaka

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Rotating bending fatigue tests were carried out for Inconel 718 at room temperature and elevated temperatures of 300 °C, 500 °C and 600 °C to investigate the influence of temperature on the fatigue crack growth resistance. The crack growth rate can be expressed by the small crack growth law, dl/dN = C1σanl = C2aB)nl, at all the temperatures, where σB, σa and l are the tensile strength, the stress amplitude and the crack length, and C1, C2 and n are constants. Therefore, the resistance to crack growth was evaluated using the small crack growth law. The fatigue crack growth resistance decreased with the increase of temperature.

Original languageEnglish
Pages (from-to)2298-2302
Number of pages5
JournalNippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
Volume63
Issue number615
DOIs
Publication statusPublished - Jan 1 1997
Externally publishedYes

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this