The effect of hybrid surface modification; Combination of fine particle bombardment treatment and nitriding, on fatigue properties of steel

Shoichi Kikuchi, Jun Komotori, Yutaka Kameyama, Kengo Fukazawa

研究成果: Conference article査読

抄録

In order to clarify the effects of the hybrid surface modification process; a combination of Fine Particle Bombardment (FPB) treatment and nitriding, on the fatigue properties of AISI 4135 steel (stress concentration factor: α=2.36), high cycle fatigue tests were carried out with a rotational bending machine at room temperature. Observations of fracture surfaces and measurements of hardness and residual stress distributions were carried out to investigate the fracture mechanism and fatigue strength. It was revealed that treating process sequence did affect residual stress distributions. Compressive residual stress generated at the surface of FPB treated specimen after nitriding was higher than that of the one FPB treated before nitriding. It was clarified that the higher the specimen hardness was, the higher compressive residual stress was generated at the surface. Therefore, FPB treatment after nitriding increased the fatigue strength of steel.

本文言語English
ページ(範囲)215-218
ページ数4
ジャーナルKey Engineering Materials
353-358
PART 1
DOI
出版ステータスPublished - 2007 1 1
イベントAsian Pacific Conference for Fracture and Strength (APCFS'06) - Sanya, Hainan Island, China
継続期間: 2006 11 222006 11 25

ASJC Scopus subject areas

  • 材料科学(全般)
  • 材料力学
  • 機械工学

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