Fracture Behavior of Micro-Sized Fe-3%Si Alloy Single Crystals

• TAKI Eiji

  Department of Materials Science and Engineering, Kumamoto University

• KAWAKAMI Yuji

  Industrial Technology Center of Saga

• OTSU Masaaki

  Department of Materials Science and Engineering, Kumamoto University

• TAKASHIMA Kazuki

  Department of Materials Science and Engineering, Kumamoto University

Abstract

Fracture tests have been performed for both millimeter-sized and micro-sized specimens prepared from a Fe-3 mass%Si alloy single crystal, and the size effects on fracture behavior have been considered. Notch plane was set to be (100), which is a cleavage plane of this material, and notch direction was set to be [010] for both type of specimens. For millimeter-sized specimens, cleavage fracture occurred during introducing a fatigue pre-crack. In contrast, the micro-sized specimens were fractured by ductile manner. This phenomenon is discussed based on the plastic zone at crack tip and the ligament size. The results obtained in this investigation provide important information for designing actual MEMS devices.

Journal

• Journal of Solid Mechanics and Materials Engineering

  Journal of Solid Mechanics and Materials Engineering 1 (6), 779-786, 2007

  The Japan Society of Mechanical Engineers

Keywords

• Fracture
• Micro-Sized Specimens
• Micro Mechanical Testing
• Size Effect

Details

• CRID: 1390282680241589632
• NII Article ID: 130000078783
• DOI: 10.1299/jmmp.1.779
• ISSN: 18809871
• Web Site: http://www.jstage.jst.go.jp/article/jmmp/1/6/1_6_779/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed