Effect of fusing treatment on fatigue strength of thermally sprayed steels with co-based self-fluxing alloy coating

Jeongseok Oh, Jun Komotori, Jungil Song, Taegyu Kim

Research output: Contribution to journalConference article

Abstract

Rotational bending fatigue tests were carried out on a medium carbon steel with a thermally sprayed Co-based alloy coating. The effect of two different fusing treatments on the fatigue strength of fused specimens was investigated. Fusing treatment was performed using a vacuum furnace, and an induction heating system. When the specimens were treated in vacuum furnace at 1373 K for 4 h, the diffusion layer providing a strong adhesive force were formed at the interface between the coating and substrate. As a result, fatigue strength remarkably increased in comparison with the uncoated specimens. On the contrary, for the treated specimens with an induction heating system at 1373 K for 120 s, since these specimens had a lower adhesive force due to no formation of diffusion layer, leading to delamination of the entire coating.

Original languageEnglish
Pages (from-to)335-338
Number of pages4
JournalKey Engineering Materials
Volume353-358
Issue numberPART 1
Publication statusPublished - 2007 Nov 19
EventAsian Pacific Conference for Fracture and Strength (APCFS'06) - Sanya, Hainan Island, China
Duration: 2006 Nov 222006 Nov 25

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Keywords

  • Adhesive strength
  • Fatigue strength
  • Fracture mechanism
  • Fusing treatment
  • Thermally sprayed

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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