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

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

研究成果: Contribution to journalArticle査読

7 被引用数 (Scopus)

抄録

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.

本文言語英語
ページ(範囲)2298-2302
ページ数5
ジャーナルNippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
63
615
DOI
出版ステータス出版済み - 1997
外部発表はい

All Science Journal Classification (ASJC) codes

  • 材料科学(全般)
  • 材料力学
  • 機械工学

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