Effects of cementite morphology on short-fatigue-crack propagation in binary Fe-C steel

Zhou Jia Xi, Motomichi Koyama, Yuichi Yoshida, Nobuyuki Yoshimura, Kohsaku Ushioda, Hiroshi Noguchi

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

The effects of cementite morphology on short-fatigue-crack propagation were investigated by subjecting smooth steel specimens to rotating-bending fatigue tests. Intergranular and transgranular cementite precipitation steels free of other phases were prepared through heat treatments. In the intergranular cementite precipitation steel, short-fatigue-crack propagation was decelerated at the grain boundaries, and accelerated in the grain interiors. In contrast, the transgranular precipitation steel showed the deceleration of the crack propagation in the grain interiors but not in the vicinity of the grain boundaries.

Original languageEnglish
Pages (from-to)384-391
Number of pages8
JournalPhilosophical Magazine Letters
Volume95
Issue number7
DOIs
Publication statusPublished - 2015 Jul 3
Externally publishedYes

Keywords

  • cementite morphology
  • crack branching
  • crack growth
  • fatigue
  • low carbon steel
  • precipitation

ASJC Scopus subject areas

  • Condensed Matter Physics

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