抄録
To clarify the effects of Super Rapid Induction Heating and Quenching (SRIHQ) on fatigue properties of Ferrite 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.
| 元の言語 | English |
|---|---|
| ページ（範囲） | 2930-2935 |
| ページ数 | 6 |
| ジャーナル | Materials Transactions |
| 巻 | 45 |
| 発行部数 | 9 |
| 出版物ステータス | Published - 2004 9 |
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ASJC Scopus subject areas
- Materials Science(all)
- Metals and Alloys
これを引用
Fatigue strength of ferritic ductile cast iron hardened by super rapid induction heating and quenching. / Misaka, Yoshitaka; Kawasaki, Kazuhiro; Komotori, Jun; Shimizu, Masao.
：: Materials Transactions, 巻 45, 番号 9, 09.2004, p. 2930-2935.研究成果: Article
}
TY - JOUR
T1 - Fatigue strength of ferritic ductile cast iron hardened by super rapid induction heating and quenching
AU - Misaka, Yoshitaka
AU - Kawasaki, Kazuhiro
AU - Komotori, Jun
AU - Shimizu, Masao
PY - 2004/9
Y1 - 2004/9
N2 - To clarify the effects of Super Rapid Induction Heating and Quenching (SRIHQ) on fatigue properties of Ferrite 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.
AB - To clarify the effects of Super Rapid Induction Heating and Quenching (SRIHQ) on fatigue properties of Ferrite 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.
KW - Ferritic ductile cast iron
KW - Fracture mechanism
KW - Rotational bending fatigue
KW - Super-rapid induction heating and quenching
UR - http://www.scopus.com/inward/record.url?scp=9144230838&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=9144230838&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:9144230838
VL - 45
SP - 2930
EP - 2935
JO - Materials Transactions
JF - Materials Transactions
SN - 1345-9678
IS - 9
ER -