Effect of grain size and nano-particle on fatigue properties for α-iron

Chitoshi Masuda*

*Corresponding author for this work

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


Fatigue strength was discussed on α-iron having fine grain size and dispersed nano-particles. The α-iron having fine grain size was fabricated by cast method and hot rolling method, while α-iron having dispersion nano-particles was prepared by powder metallurgy and hot rolling process. The fatigue test was performed by rotating bending fatigue testing machine using the bar type of specimen of 3.5 mm in diameter. Fatigue strength for α-iron having fine grain size was about 300MPa, while for α-iron having dispersion nano-particles the fatigue strength was about 500MPa. Those fatigue data were higher than those of JIS S25C carbon steel normalized and JIS S55C carbon steel tempered at 600°C.

Original languageEnglish
Title of host publicationUltrafine Grained Materials III
EditorsY.T. Zhu, T.G. Langdon, R.Z. Valiev, S. Lee Semiatin, al et al
Number of pages6
Publication statusPublished - 2004
EventUltrafine Grained Materials III - Charlotte, NC.
Duration: 2004 Mar 142004 Mar 18


OtherUltrafine Grained Materials III
CityCharlotte, NC.


  • α-iron
  • Fatigue strength
  • Fine grain
  • Nano-composite dispersed

ASJC Scopus subject areas

  • General Engineering


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