High-voltage electron-microscopic observation of cyclic slip behavior around a fatigue crack tip in an iron alloy

Yoshimasa Takahashi, Masaki Tanaka, Kenji Higashida, Hiroshi Noguchi

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

The cyclic slip behavior around a fatigue crack tip originally located inside a bulk Fe-Si alloy was successfully observed by a high-voltage electron microscope in combination with a novel specimen preparation method. The method, by taking advantages of ion milling and focused ion beam techniques, ensures that the original shape of the crack tip is preserved without introducing additional slips. The observation confirms that the slip bands emitted from the fatigue crack tip are bounded by a labyrinth-like wall structure.

Original languageEnglish
Pages (from-to)717-720
Number of pages4
JournalScripta Materialia
Volume60
Issue number8
DOIs
Publication statusPublished - Apr 1 2009

Fingerprint

iron alloys
Iron alloys
crack tips
Crack tips
high voltages
slip
Electrons
Electric potential
labyrinth
Specimen preparation
electrons
Focused ion beams
edge dislocations
Electron microscopes
electron microscopes
ion beams
Ions
preparation
Fatigue cracks
ions

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

Cite this

High-voltage electron-microscopic observation of cyclic slip behavior around a fatigue crack tip in an iron alloy. / Takahashi, Yoshimasa; Tanaka, Masaki; Higashida, Kenji; Noguchi, Hiroshi.

In: Scripta Materialia, Vol. 60, No. 8, 01.04.2009, p. 717-720.

Research output: Contribution to journalArticle

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