Fatigue crack growth of a Ni-P amorphous alloy thin film

Kazuki Takashima, Masayuki Shimojo, Yakichi Higo, Michael V. Swain

研究成果: Conference article査読

3 被引用数 (Scopus)

抄録

Fatigue crack growth behavior has been investigated for micro-sized Ni-P amorphous alloy specimens. Cantilever beam type specimens (10 μm by 12 μm by 50 μm) with notches were prepared from Ni-P amorphous thin film by focused ion beam machining. Fatigue crack growth tests were carried out in air at room temperature using a newly developed mechanical testing machine that can apply cyclic loading to micro-sized specimens. Striations were observed clearly on the fatigue surface, and fatigue crack growth resistance curves as a function of stress intensity range (ΔK) were obtained from careful measurements of the striation spacings. The fatigue crack growth rates at stress ratios of 0.3 and 0.5 were greater than that at 0.1 under a given value of ΔK. This suggests crack closure may occur even in such micro-sized specimens and may affect the fatigue crack growth behavior.

本文言語English
ページ(範囲)52-61
ページ数10
ジャーナルASTM Special Technical Publication
1413
DOI
出版ステータスPublished - 2001
イベントMechanical Properties of Structural Films - Orlando, FL, United States
継続期間: 2000 11 152000 11 16

ASJC Scopus subject areas

  • Engineering(all)

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