Effect of stress ratio on long life fatigue behavior of high carbon chromium bearing steel under axial loading

Tatsuo Sakai*, Yosuke Sato, Yoshiyuki Nagano, Mitsuhiro Takeda, Noriyasu Oguma

*この論文の責任著者

研究成果: ジャーナルへの寄稿学術論文査読

141 被引用数 (Scopus)

抄録

Effect of the stress ratio on fatigue properties of a bearing steel (JIS:SUJ2) in the long life regime was experimentally examined under axial loading. As a result, the duplex S-N characteristics given by superposition of S-N curves for surface-induced fracture and interior inclusion-induced fracture were obtained similar to the corresponding results in rotating bending. Fish-eye marks were necessarily observed on the fracture surfaces failed in the latter fracture mode and an inclusion was found at the center of the fish-eye. The fatigue fracture of this steel in the long life regime occurred through three different processes of: (1) formation of the characteristic area of Fine Granular Area (FGA), (2) crack propagation to form the fish-eye and (3)rapid crack propagation to cause the catastrophic fracture. The effect of the stress ratio on the FGA size was confirmed and, this effect was well explained by the stress intensity factor at front of the FGA.

本文言語英語
ページ(範囲)1547-1554
ページ数8
ジャーナルInternational Journal of Fatigue
28
11
DOI
出版ステータス出版済み - 2006/11

ASJC Scopus 主題領域

  • モデリングとシミュレーション
  • 材料科学一般
  • 材料力学
  • 機械工学
  • 産業および生産工学

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