Fatigue strength of Ferritic Ductile Cast Iron Hardened by Super Rapid Induction Heating and Quenching

Translated title of the contribution: Fatigue strength of Ferritic Ductile Cast Iron Hardened by Super Rapid Induction Heating and Quenching

Yoshitaka Misaka, Kazuhiro Kawasaki, Jun Komotori, Masao Shimizu

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

To clarify the effects of Super Rapid Induction Heating and Quenching (SRIHQ) on fatigue properties of Ferritic Ductile Cast Iron (FDI), rotational bending fatigue tests were carried out on specimens treated with four types of heating cycle. Results showed that; (i) the SRIHQ process generated a thin dark gray area around the graphite. This dark area was composed of a martensite structure (ringed martensite). (ii) The ringed martensite generated a compressive residual stress field at the surface hardened layer. Two types of compressive residual stress generative mechanisms were observed. One was a microscopic residual stress generative process due to the formation of ringed martensite and the other was a macroscopic residual stress generative process due to the expansion of the surface hardened layer, (iii) The fatigue strength of SRIHQ treated FDI specimen was higher than that of the untreated one. This was because the compressive residual stress field generated by the ringed martensite suppressed initiation and propagation of fatigue cracks.

Original languageJapanese
Pages (from-to)1057-1063
Number of pages7
JournalNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Volume69
Issue number12
DOIs
Publication statusPublished - 2005 Dec

Fingerprint

induction heating
Induction heating
martensite
Cast iron
Martensite
residual stress
casts
Quenching
Residual stresses
quenching
iron
Compressive stress
stress distribution
surface layers
Fatigue of materials
bending fatigue
fatigue tests
Graphite
cracks
graphite

Keywords

  • Ferritic ductile cast iron
  • Fracture mechanism
  • Rotational bending fatigue
  • Super-rapid induction heating and quenching

ASJC Scopus subject areas

  • Metals and Alloys

Cite this

Fatigue strength of Ferritic Ductile Cast Iron Hardened by Super Rapid Induction Heating and Quenching. / Misaka, Yoshitaka; Kawasaki, Kazuhiro; Komotori, Jun; Shimizu, Masao.

In: Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals, Vol. 69, No. 12, 12.2005, p. 1057-1063.

Research output: Contribution to journalArticle

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