A Study on the Effect of Compressive Residual Stress for Corrosion Property of SUP-9 Steel Using as Suspension Material

현가장치재 SUP-9강의 부식특성에 미치는 압축잔류응력의 영향에 관한 연구

  • 유형주 (부경대학교 기계공학부) ;
  • 안재필 (부경대학교 기계공학부) ;
  • 박경동 (부경대학교 기계공학부)
  • Published : 2005.07.01


One of the useful technology for light-weightening of components required in the automobile and machine industry is to use of high strength materials. To improve material properties, carbonizing treatment, nitrifying treatment, and shot-peening method are representatively applied, However, the shot-peening method is generally used to remove the surface defect of steel and to improve the fatigue strength on surface. Benefits by shot peening are to make increase resistance against fatigue, stress corrosion cracking, fretting, galling, erosion and closing of pores. In this paper, investigated the effect of shot peening on the corrosion of SUP-9 steel immersed in $3.5\%$ NaCl solution and corrosion characteristics by the heat treatment during shot peening process. The immersion test was performed on the four kinds of specimens. Corrosion potential, polarization curve, residual stress and etc. were investigated from the experimental results.


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