NEAR-THRESHOLD FATIGUE CRACK GROWTH BEHAVIORS IN AIR AT ROOM TEMPERATURE FOR VARIOUS STAINLESS STEELS.

S. Matsuoka*, S. Nishijima, C. Masuda, S. Ohtsubo

*この研究の対応する著者

研究成果: Conference contribution

18 被引用数 (Scopus)

抄録

Near-threshold fatigue crack growth behaviour is investigated for four stainless steels of ferritic 17Cr, martensitic 12Cr, and austenitic 18Cr-8Ni and 25Cr-20Ni in laboratory and dry air at room temperature. The stainless steels are free from oxide-induced closure because large amount of chromium in the stainless steels assures formation of the passive film on the fracture surface and thus, prevents oxide thickening within the crack. In laboratory air, therefore, DELTA K//t//h-values for stainless steels are lower when compared with those for carbon or low alloy steels with similar strength levels. Dry air does not influence the near-threshold crack growth behaviors for stainless steels, while it eliminates the excess oxide debris from fracture surface of carbon or low alloy steels and reduces their DELTA K//t//h-values to the level of stainless steels.

本文言語English
ホスト出版物のタイトルUnknown Host Publication Title
Place of PublicationOxford, Engl
出版社Pergamon Press
ページ1561-1570
ページ数10
ISBN(印刷版)0080293093
出版ステータスPublished - 1984
外部発表はい

ASJC Scopus subject areas

  • 工学(全般)

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