Suppression of fatigue crack growth in austenite stainless steel by cavitation peening

Osamu Takakuwa, Masaaki Nishikawa, Hitoshi Soyama

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

5 引用 (Scopus)

抜粋

Cavitation normally causes severe damage in hydraulic machinery such as pumps and turbines by the impact produced by cavitation bubbles collapsing. Although cavitation is known as a factor of erosion, Soyama et al. succeeded in utilizing impacts of cavitation bubble collapsing for surface modification by controlling cavitating jet in the same way as shot peening. The local plastic deformation caused by cavitation impact enhances the fatigue strength of metallic materials, and the surface modification technique utilizing cavitation impact is called "cavitation peening (CP)". It is well known that the peening improves fatigue strength by introducing compressive residual stress on the surface, but little attention has been paid to the behavior of fatigue crack growth of the material which was modified by CP. In the present study, the fatigue behavior of austenite stainless steel with and without CP was evaluated by a plate bending fatigue test, and the results revealed that the compressive residual stress introduced by CP suppresses fatigue crack growth rate by 70 % compared to that without CP.

元の言語英語
ホスト出版物のタイトルAdvances in Fracture and Damage Mechanics IX, FDM 2010
ページ641-644
ページ数4
DOI
出版物ステータス出版済み - 1 6 2011
外部発表Yes
イベント9th International Conference on Fracture and Damage Mechanics, FDM 2010 - Nagasaki, 日本
継続期間: 9 20 20099 22 2009

出版物シリーズ

名前Key Engineering Materials
452-453
ISSN(印刷物)1013-9826

その他

その他9th International Conference on Fracture and Damage Mechanics, FDM 2010
日本
Nagasaki
期間9/20/099/22/09

All Science Journal Classification (ASJC) codes

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

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  • これを引用

    Takakuwa, O., Nishikawa, M., & Soyama, H. (2011). Suppression of fatigue crack growth in austenite stainless steel by cavitation peening. : Advances in Fracture and Damage Mechanics IX, FDM 2010 (pp. 641-644). (Key Engineering Materials; 巻数 452-453). https://doi.org/10.4028/www.scientific.net/KEM.452-453.641