Molybdenum hybrid-alloyed steel powder for high fatigue strength sintered parts using mesh-belt sintering furnace

Shigeru Unami, Yukiko Ozaki

Research output: Contribution to journalArticlepeer-review

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 0.6 mass% Mo prealloyed steel powder to which 0.2 mass% Mo powder particles have been diffusion bonded, is higher than that of the 0.6 mass% 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 a-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 hybrid-alloyed 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
Pages (from-to)65-70
Number of pages6
JournalJFE Technical Report
Issue number16
Publication statusPublished - Mar 1 2011
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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