高強度鋼の疲労き裂進展に及ぼす大気中水分の影響

DOI Web Site 被引用文献6件

書誌事項

タイトル別名
  • The influence of moisture in air on fatigue crack propagation characteristics of high-strength steels.
  • コウ キョウド コウ ノ ヒロウ キレツ シンテン ニ オヨボス タイキチュウ

この論文をさがす

抄録

In order to clarify the influence of moisture in air on fatigue crack propagation characteristics of high strength steels, fatigue tests were conducted in laboratory air and dry air using CT specimens.<br>The following results were obtained:<br>(1) In case of low stress ratio (R=0.1), the retardation-effect by moisture in air was recognized in low ΔK region (stage 2a) of the specimen whose tensile strength was below about 2000MPa. This behavior was explained due to the oxide-induced crack closure promoted by moisture in air.<br>(2) In case of high stress ratio (R=0.8), the acceleration-effect by moisture in air was recognized in the medium ΔK region (stage 2b) of the specimen whose tensile strength was higher than 1000MPa. This acceleration-effect might be caused by the hydrogen embrittlement which occurred near the specimen surface, and became more remarkable when the test frequency was low.

収録刊行物

  • 材料

    材料 39 (439), 425-431, 1990

    公益社団法人 日本材料学会

被引用文献 (6)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ