Improvement of Rolling Contact Fatigue Strength of Silicon Nitride by Shot-Peening

• YAMAMOTO Hiroki

  横浜国立大学 大学院工学研究院

• OKI Tomoya

  横浜国立大学 工学府

• TAKAHASHI Koji

  Faculty of Engineering, Yokohama National University.

• OSADA Toshio

  横浜国立大学 共同研究推進センター

Bibliographic Information

Other Title

• ショットピーニングによる窒化ケイ素の転動疲労強度向上

Abstract

The effect of the shot-peening on rolling contact fatigue of Si₃N₄ was investigated. Additionally we tried to clarify damage mechanism of rolling contact fatigue. By shot-peening, high compressive residual stress can be introduced near the surface. The residual stress can improve apparent fracture toughness K_IC and Vickers hardness HV of Si₃N₄ by approximately 73% and 8%, respectively. As a result, bending strength of pre-cracked specimen was improved 27~46% by shot-peening. The delamination damage was inhibited by shot-peening, and as a result rolling contact fatigue of the Si₃N₄ was improved. These results are achieved by the compressive residual stress which is introduced by shot-peening. These results indicate that shot-peening is effective method to make use of ceramics as a rolling contact member.

Journal

• TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A

  TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A 79 (802), 740-744, 2013

  The Japan Society of Mechanical Engineers

Keywords

• Ceramics
• Silicon Nitride
• Shot-Peening
• Rolling Contact Fatigue Strength

Details

• CRID: 1390282679453990272
• NII Article ID: 130003374653
• DOI: 10.1299/kikaia.79.740
• ISSN: 18848338
• ISSN: 03875008
• Web Site: https://www.jstage.jst.go.jp/article/kikaia/79/802/79_740/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed