Effect of oxide films on a fatigue crack inititation and its early growth of Ni-base super alloy

Norio Kawagoishi, Yoshihisa Ozono, Qiang Chen, Masahiro Goto, Hideho Tanaka, Eiji Kondo

研究成果: ジャーナルへの寄稿記事

4 引用 (Scopus)

抄録

Rotating bending fatigue tests were carried out for Ni base super alloy Inconel 718 at room temperature and elevated temperatures of 300°C, 500°C and 600°C in order to investigate the effect of surface oxidation at the elevated temperatures on the fatigue crack initiation and its early growth process. The fatigue strength was higher at the elevated temperatures than at room temperature when stress levels were low. This phenomenon was caused from that the growth of a crack smaller than the size of a few grains was suppresed at the elevated temperatures, though the growth of a larger crack was accelerated. The main reason for the suppression of the early growth of a small crack was a formation of oxide films on the specimen surface at the elevated temperatures.

元の言語英語
ページ(範囲)839-844
ページ数6
ジャーナルNihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
64
発行部数620
DOI
出版物ステータス出版済み - 1 1 1998
外部発表Yes

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Oxide films
Temperature
Cracks
Fatigue cracks
Crack initiation
Fatigue of materials
Oxidation

All Science Journal Classification (ASJC) codes

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

これを引用

Effect of oxide films on a fatigue crack inititation and its early growth of Ni-base super alloy. / Kawagoishi, Norio; Ozono, Yoshihisa; Chen, Qiang; Goto, Masahiro; Tanaka, Hideho; Kondo, Eiji.

:: Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A, 巻 64, 番号 620, 01.01.1998, p. 839-844.

研究成果: ジャーナルへの寄稿記事

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AU - Tanaka, Hideho

AU - Kondo, Eiji

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