Effect of microstructure on the rolling contact fatigue strength of 4600 steel P/M compacts

Terukazu Tokuoka, Yoshitomo Nakahara, Kentaro Kudo, Takao Nishioka, Hideshi Miura

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

Abstract

Generally, the mechanical properties of conventional P/M materials are inferior to those of wrought materials. Therefore, the improvement of mechanical properties for P/M materials is needed for heavy-duty applications such as automotive transmission gears. Heat-treated 4600 steel MIM compacts with heterogeneous microstructure, which are made possible using mixed elemental powders, showed excellent tensile and bending fatigue strength in our previous studies. This study was performed to clarify the relationship between rolling contact fatigue behavior and the microstructure in 4600 steel P/M compacts using prealloyed and mixed elemental powders. The heterogeneous microstructure using mixed elemental powders showed slightly superior properties compared with the homogeneous microstructure using prealloyed powder. Those compacts were also densified by rolling. Contrary to the prediction, the rolling contact fatigue strength of the rolled sample was on the same level as the non-rolled sample.

Original languageEnglish
Title of host publicationProceedings of the World Powder Metallurgy Congress and Exhibition, World PM 2010
PublisherEuropean Powder Metallurgy Association (EPMA)
Volume3
ISBN (Print)9781899072194
Publication statusPublished - Jan 1 2010
EventWorld Powder Metallurgy Congress and Exhibition, World PM 2010 - Florence, Italy
Duration: Oct 10 2010Oct 14 2010

Other

OtherWorld Powder Metallurgy Congress and Exhibition, World PM 2010
CountryItaly
CityFlorence
Period10/10/1010/14/10

Fingerprint

Steel
Powders
steels
microstructure
Microstructure
mechanical properties
bending fatigue
MIM (semiconductors)
Mechanical properties
Gears
Fatigue of materials
heat
Fatigue strength
predictions

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Ceramics and Composites
  • Materials Chemistry
  • Metals and Alloys
  • Condensed Matter Physics

Cite this

Tokuoka, T., Nakahara, Y., Kudo, K., Nishioka, T., & Miura, H. (2010). Effect of microstructure on the rolling contact fatigue strength of 4600 steel P/M compacts. In Proceedings of the World Powder Metallurgy Congress and Exhibition, World PM 2010 (Vol. 3). European Powder Metallurgy Association (EPMA).

Effect of microstructure on the rolling contact fatigue strength of 4600 steel P/M compacts. / Tokuoka, Terukazu; Nakahara, Yoshitomo; Kudo, Kentaro; Nishioka, Takao; Miura, Hideshi.

Proceedings of the World Powder Metallurgy Congress and Exhibition, World PM 2010. Vol. 3 European Powder Metallurgy Association (EPMA), 2010.

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

Tokuoka, T, Nakahara, Y, Kudo, K, Nishioka, T & Miura, H 2010, Effect of microstructure on the rolling contact fatigue strength of 4600 steel P/M compacts. in Proceedings of the World Powder Metallurgy Congress and Exhibition, World PM 2010. vol. 3, European Powder Metallurgy Association (EPMA), World Powder Metallurgy Congress and Exhibition, World PM 2010, Florence, Italy, 10/10/10.
Tokuoka T, Nakahara Y, Kudo K, Nishioka T, Miura H. Effect of microstructure on the rolling contact fatigue strength of 4600 steel P/M compacts. In Proceedings of the World Powder Metallurgy Congress and Exhibition, World PM 2010. Vol. 3. European Powder Metallurgy Association (EPMA). 2010
Tokuoka, Terukazu ; Nakahara, Yoshitomo ; Kudo, Kentaro ; Nishioka, Takao ; Miura, Hideshi. / Effect of microstructure on the rolling contact fatigue strength of 4600 steel P/M compacts. Proceedings of the World Powder Metallurgy Congress and Exhibition, World PM 2010. Vol. 3 European Powder Metallurgy Association (EPMA), 2010.
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