Impact fatigue properties of carburized SCM415 steels

Kiyoshi Uwai, Toshiro Kobayashi, Mitsuo Niinomi, Shuhei Adachi

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


Fatigue and impact fatigue tests have been carried out on carburized steels with the case between 0.3 and 0.5 mm. S-Nf curves in impact fatigue tests show a knee transition point as well as in fatigue tests. Fish-eye fracture appears when the crack initiates from the inside of the specimen. The transition on S-Nf curve is attributed to the difference in crack initiation site. The crack growth rate calculated from the striations in impact fatigue tests is higher than that in fatigue ones. Cyclic impact loading accelerates the release of dislocations and damage of grain boundaries.

Original languageEnglish
Pages (from-to)155-162
Number of pages8
JournalTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
Issue number1
Publication statusPublished - 1991

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Metals and Alloys
  • Materials Chemistry


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