Improvement of the contact fatigue strength by rolling of sintered ferrous alloy roller-1st report

Hideshi Miura, Toshiko Osada, Shota Hamamoto, Kosuke Komoto, Nobuhiro Tsuchihashi, Shigeru Unami

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Due to the continual improvements of powder metallurgy techniques, it is possible for sintered materials to compete the wrought materials even in some of the most demanding applications. However, strength of sintered materials was inadequacy, because they have a lot of pores. This paper describes a study on the effect of rolling on the contact fatigue strength of sintered ferrous alloy compacts. The effects of rolling were evaluated by measuring the hardness and porosity distributions at the vicinity of the surfaces of rolled compacts. The effects of the amount of rolling on the contact fatigue strength, and the contact fatigue damage mechanisms were also investigated. Porosity at the vicinity of the surfaces of rolled compacts was decreased with increasing the amount of radial feed, from which the contact fatigue strength of rolled compacts was improved.

Original languageEnglish
Pages (from-to)325-329
Number of pages5
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume56
Issue number6
DOIs
Publication statusPublished - Jun 1 2009

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry

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