Retardation Effects of Fatigue Crack Propagation in the Optimum Ferrite-Bainite Steel

• Katsuta Junichi

  長崎大学 工学部 構造工学科

• Kubo Satoshi

  住友金属工業(株) 建設鋼材カンパニー

• Konda Noboru

  住友金属工業(株) 総合技術研究所

• Koga Shuhei

  住友金属工業(株) 交通産業機品カンパニー

• Ushijima Shinichi

• Kawano Kazuyoshi

  長崎大学 工学部 構造工学科

Bibliographic Information

Other Title

• 耐疲労鋼の疲労き裂伝播特性における遅延効果
• タイヒロウ コウ ノ ヒロウ キレツ デンパ トクセイ ニ オケル チエン コウカ

Abstract

It is clarified that fatigue crack propagation rate of the optimum ferrite-bainite (F/B) steel shows superior resistance in comparison with conventional ferrite-pearlite (F/P) steel. In this study, fatigue crack propagation properties of both F/P steel and the F/B steel are investigated in consideration of opening/closure of fatigue crack tip. Fatigue crack propagation tests have been carried out under various loading conditions ( constant amplitude cyclic loading, block amplitude cyclic loading and constant amplitude cyclic loading and a few static large spike loads ) for acceleration, retardation and non-propagation of crack growth rate. From the results of this study, fatigue crack propagation phenomena are shown in hysteresis loop for fatigue crack tip, and fatigue crack growth retardation and non-propagation bring long tail of hysteresis loop for fatigue crack tip. And effects of retardation in the F/B steel are larger than that in F/P steel.

Journal

• Journal of the Japan Society of Naval Architects and Ocean Engineers

  Journal of the Japan Society of Naval Architects and Ocean Engineers 12 209-217, 2010

  The Japan Society of Naval Architects and Ocean Engineers

Details

• CRID: 1390001205253566336
• NII Article ID: 130001333133
• NII Book ID: AA12057769
• DOI: 10.2534/jjasnaoe.12.209
• ISSN: 18811760
• ISSN: 18803717
• NDL BIB ID: 10988681
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I10988681
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed