Hydrogen emission in fatigue process of hydrogen-charged austenitic stainless steels

Katsuya Hayashida, Hisao Matsunaga, Masahiro Endo

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

抄録

The acceleration of hydrogen diffusion in the fatigue process of AISI type 304 and 316L meta-stable austenitic stainless steels was studied by paying attention to the relation between fatigue slip bands and hydrogen emission. Slip bands were formed in tension-compression fatigue tests of round specimens in ambient air, and then the specimens were cathodically charged with hydrogen. The location of hydrogen emission was microscopically visualized by means of the hydrogen microprint technique (HMT). Hydrogen was mainly emitted from slip bands on the surface of fatigued specimens. The depth of hydrogen diffusion into the specimens was also observed on the fatigue fracture surfaces by the HMT. The depth for a specimen hydrogen-charged before fatigue testing was about 50 μm at a maximum, whereas the depth for a specimen that was hydrogen-charged after slip bands had been formed in a preliminary fatigue test was about 300 μm. Those results suggested that slip bands act as a pathway where hydrogen will move preferentially.

本文言語英語
ホスト出版物のタイトルFourth International Conference on Experimental Mechanics
7522
DOI
出版ステータス出版済み - 12 1 2010
外部発表はい
イベント4th International Conference on Experimental Mechanics - Singapore, シンガポール
継続期間: 11 18 200911 20 2009

その他

その他4th International Conference on Experimental Mechanics
国/地域シンガポール
CitySingapore
Period11/18/0911/20/09

All Science Journal Classification (ASJC) codes

  • 応用数学
  • コンピュータ サイエンスの応用
  • 電子工学および電気工学
  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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