Improvement of the contact fatigue strength by rolling of sintered ferrous alloy rolle -2nd Report

Hideshi Miura, Fujio Tsumori, Shota Hamamoto, Kosuke Komoto, Shigeru Unami

Research output: Contribution to journalArticle

3 Citations (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 normally inadequacy, because they have a lot of pores. This paper describes a study on the effects of the amount of rolling and effective hardened depth by case hardening on the contact fatigue strength of sintered ferrous alloy compacts and the contact fatigue damage mechanisms. 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. Furthermore rolling contact fatigue strength of rolled and case hardened compacts was more improved.

Original languageEnglish
Pages (from-to)430-434
Number of pages5
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume57
Issue number6
DOIs
Publication statusPublished - Jun 1 2010

All Science Journal Classification (ASJC) codes

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

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