Fatigue strength of sintered and carburized compacts made of molybdenum hybrid-alloyed steel powder

Shigeru Unami, Yukiko Ozaki, Satoshi Uenosono

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

2 Citations (Scopus)

Abstract

The fatigue strength of the sintered and carburized compact made of the Mo hybrid-alloyed steel powder, which is based on a molybdenum prealloyed steel powder to which Mo powder particles have been diffusion bonded, is higher than that of the Mo prealloyed steel powder. The sintered compact made of the Mo hybrid-alloyed steel powder has a finer pore structure than that of the Mo prealloyed steel powder, because the Mo-rich region near the surface of the Mo hybrid-alloyed steel powder should exist as the α- iron phase with a high diffusion coefficient at high temperature and result in enhanced sintering. Improvement in the fatigue strength of the sintered and carburized compact made of the Mo hybridalloyed steel powder should result from not only the fine pore structure but also the strengthening of the sintering neck by Mo concentration around pores.

Original languageEnglish
Title of host publicationAdvances in Powder Metallurgy and Particulate Materials - 2007, Proceedings of the 2007 International Conference on Powder Metallurgy and Particulate Materials, PowderMet 2007
Pages1056-1065
Number of pages10
Publication statusPublished - 2007
Externally publishedYes
Event2007 International Conference on Powder Metallurgy and Particulate Materials, PowderMet 2007 - Denver, CO, United States
Duration: May 13 2007May 16 2007

Other

Other2007 International Conference on Powder Metallurgy and Particulate Materials, PowderMet 2007
CountryUnited States
CityDenver, CO
Period5/13/075/16/07

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All Science Journal Classification (ASJC) codes

  • Metals and Alloys
  • Surfaces and Interfaces

Cite this

Unami, S., Ozaki, Y., & Uenosono, S. (2007). Fatigue strength of sintered and carburized compacts made of molybdenum hybrid-alloyed steel powder. In Advances in Powder Metallurgy and Particulate Materials - 2007, Proceedings of the 2007 International Conference on Powder Metallurgy and Particulate Materials, PowderMet 2007 (pp. 1056-1065)