Fracture behavior of micro-sized specimens with fatigue pre-crack prepared from a Ni-P amorphous alloy thin film

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

研究成果: Conference contribution

8 引用 (Scopus)

抄録

Fracture toughness tests have been performed for an electroless deposited Ni-P amorphous alloy thin film with different crack growth directions, which are perpendicular and parallel to the deposition growth direction. Cantilever beam type specimens with dimensions of 10 by 10 by 50 μm 3 were prepared from a Ni-P amorphous thin film, and notches with different direction were introduced by focused ion beam machining. Fatigue pre-cracks were introduced ahead of the notches. Both introduction of fatigue pre-cracks and fracture tests were performed using a newly developed mechanical testing machine for micro-sized specimens. Fracture behavior is different between the two types of specimens. K IC values were not obtained as the criteria of plane strain requirements were not satisfied for this size of the specimen, so that the provisional fracture toughness K Q values were obtained. The K Q value of the specimen with crack propagation direction being parallel to the deposition growth direction was 7.3 MPa m 1/2, while that with crack propagation direction being perpendicular to the deposition growth direction was 4.2 MPa m 1/2. These results suggest that the electroless deposited amorphous alloy thin film has anisotropic mechanical properties.

元の言語English
ホスト出版物のタイトルASTM Special Technical Publication
出版者American Society for Testing and Materials
ページ72-81
ページ数10
エディション1413
出版物ステータスPublished - 2001
外部発表Yes
イベントMechanical Properties of Structural Films - Orlando, FL, United States
継続期間: 2000 11 152000 11 16

Other

OtherMechanical Properties of Structural Films
United States
Orlando, FL
期間00/11/1500/11/16

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Amorphous alloys
Crack propagation
Fatigue of materials
Cracks
Thin films
Fracture toughness
Mechanical testing
Focused ion beams
Cantilever beams
Amorphous films
Machining
Mechanical properties

ASJC Scopus subject areas

  • Engineering(all)

これを引用

Takashima, K., Shimojo, M., Higo, Y., & Swain, M. V. (2001). Fracture behavior of micro-sized specimens with fatigue pre-crack prepared from a Ni-P amorphous alloy thin film. : ASTM Special Technical Publication (1413 版, pp. 72-81). American Society for Testing and Materials.

Fracture behavior of micro-sized specimens with fatigue pre-crack prepared from a Ni-P amorphous alloy thin film. / Takashima, Kazuki; Shimojo, Masayuki; Higo, Yakichi; Swain, Michael V.

ASTM Special Technical Publication. 1413. 編 American Society for Testing and Materials, 2001. p. 72-81.

研究成果: Conference contribution

Takashima, K, Shimojo, M, Higo, Y & Swain, MV 2001, Fracture behavior of micro-sized specimens with fatigue pre-crack prepared from a Ni-P amorphous alloy thin film. : ASTM Special Technical Publication. 1413 Edn, American Society for Testing and Materials, pp. 72-81, Mechanical Properties of Structural Films, Orlando, FL, United States, 00/11/15.
Takashima K, Shimojo M, Higo Y, Swain MV. Fracture behavior of micro-sized specimens with fatigue pre-crack prepared from a Ni-P amorphous alloy thin film. : ASTM Special Technical Publication. 1413 版 American Society for Testing and Materials. 2001. p. 72-81
Takashima, Kazuki ; Shimojo, Masayuki ; Higo, Yakichi ; Swain, Michael V. / Fracture behavior of micro-sized specimens with fatigue pre-crack prepared from a Ni-P amorphous alloy thin film. ASTM Special Technical Publication. 1413. 版 American Society for Testing and Materials, 2001. pp. 72-81
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