Fracture behavior of micro-sized Ni-P amorphous alloy specimens

Y. Ichikawa, S. Maekawa, K. Takashima, Masayuki Shimojo, Y. Higo, M. V. Swain

Research output: Chapter in Book/Report/Conference proceedingConference contribution

15 Citations (Scopus)

Abstract

Fracture behavior of micro-sized Ni-P Amorphous alloy specimens has been investigated using a newly developed mechanical testing machine. Specimens with dimensions of 10 × 12 × 50 μm were prepared by focused ion beam machining. Two types of specimens with different crack geometries were prepared. One specimen has a notch with root radius is 0.25 μm and the other has a fatigue pre-crack. The shapes of the load-displacement curves are different for each type of specimen. The fracture strength of the specimens with a notch is higher than that with a fatigue pre-crack and the fracture surfaces of the specimens are also different for each type of specimen. This may be due to the difference in stress concentration at the crack (notch) tip, and indicates that even a notch with a root radius of 0.25 μm is not able to be regarded as a crack for micro-sized specimens. Therefore, the introduction of a fatigue pre-crack is essential for the evaluation of fracture toughness for such micro-sized specimens.

Original languageEnglish
Title of host publicationMaterials Research Society Symposium - Proceedings
PublisherMaterials Research Society
Pages273-278
Number of pages6
Volume605
Publication statusPublished - 2000
Externally publishedYes
EventMaterials Science of Microelectromechanical Systems (MEMS) Devices II - Boaton, MA, USA
Duration: 1999 Nov 291999 Dec 1

Other

OtherMaterials Science of Microelectromechanical Systems (MEMS) Devices II
CityBoaton, MA, USA
Period99/11/2999/12/1

Fingerprint

Amorphous alloys
Cracks
Fatigue of materials
Fracture toughness
Mechanical testing
Focused ion beams
Stress concentration
Machining
Geometry

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

Cite this

Ichikawa, Y., Maekawa, S., Takashima, K., Shimojo, M., Higo, Y., & Swain, M. V. (2000). Fracture behavior of micro-sized Ni-P amorphous alloy specimens. In Materials Research Society Symposium - Proceedings (Vol. 605, pp. 273-278). Materials Research Society.

Fracture behavior of micro-sized Ni-P amorphous alloy specimens. / Ichikawa, Y.; Maekawa, S.; Takashima, K.; Shimojo, Masayuki; Higo, Y.; Swain, M. V.

Materials Research Society Symposium - Proceedings. Vol. 605 Materials Research Society, 2000. p. 273-278.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Ichikawa, Y, Maekawa, S, Takashima, K, Shimojo, M, Higo, Y & Swain, MV 2000, Fracture behavior of micro-sized Ni-P amorphous alloy specimens. in Materials Research Society Symposium - Proceedings. vol. 605, Materials Research Society, pp. 273-278, Materials Science of Microelectromechanical Systems (MEMS) Devices II, Boaton, MA, USA, 99/11/29.
Ichikawa Y, Maekawa S, Takashima K, Shimojo M, Higo Y, Swain MV. Fracture behavior of micro-sized Ni-P amorphous alloy specimens. In Materials Research Society Symposium - Proceedings. Vol. 605. Materials Research Society. 2000. p. 273-278
Ichikawa, Y. ; Maekawa, S. ; Takashima, K. ; Shimojo, Masayuki ; Higo, Y. ; Swain, M. V. / Fracture behavior of micro-sized Ni-P amorphous alloy specimens. Materials Research Society Symposium - Proceedings. Vol. 605 Materials Research Society, 2000. pp. 273-278
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