International Journal of Automotive Technology

The Korean Society of Automotive Engineers (한국자동차공학회)
권호 표지

EFFECT OF COMPRESSIVE RESIDUAL STRESS FOR CORROSION PROPERTY OF SUP-9 STEEL USING AS SUSPENSION MATERIAL

  • Park, K.D. (Department of Mechanical Engineering, Pukyong National University) ;
  • Ki, W.T. (Department of Mechanical Engineering, Pukyong National University) ;
  • Shin, Y.J. (Department of Mechanical Engineering, Pukyong National University) ;
  • Ryu, H.J. (Department of Mechanical Engineering, Pukyong National University)
  • Published : 2007.06.30
Download PDF
⟨ Previous Next ⟩

Abstract

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

Keywords

References

  1. ASTM (1994). Standard test method for determining the effective elastic parameter for X-ray diffraction measurement of residual stress. ASTM E 1426-94, 932-935
  2. Bae, D. H., Shon, I. S., Jung, W. S., Kim, N. S., Jung, W. W. and Park, S. C. (2005). Effect of residual stress by shot peening on fatigue strngth of LCV leaf spring. Int. J. Automotive Technology 6, 6, 671-676
  3. Cheong, S. K., Lee, S. H. and Chung, S. C. (2001). Effect of the peening intensity by shot peening. Trans. Korean Society of Mechanical Engineers A, 25, 10, 1590-1596
  4. Fontana, M. G. (1986). Corrosion Engineering. 3rd edn. McGraw-Hill. New York
  5. Gibson, F. W. (1987). Corrosion, concrete, and chlorides. Australasian Conf. Information Security and Privacy, 102, 13, 107, 155, 161
  6. Greene, N. D. (1991). Metallic Corrosion. Butterworths. London
  7. Jones, D. A. (1995). Principles and Prevention of Corrosion. 2nd edn. Prentice Hall. New Jersey
  8. Lim, U. J. and Yun, B. D. (2001). Study on the crevice corrosion behavior of SS400 in marine environment. Korean Society of Marine Engineering 25, 6, 1336-1340
  9. Lim, U. J. and Han, G. S. (2000). Study on the characteristics of crevice corrosion for STS304 austenitic stainless steel (I). Korean Association of Academic Societies 36, 1, 66-72
  10. Park, K. D. and Jung, C. G. (2003). The effect of compressive residual stresses of two-stage shot-peening for fatigue life of vehicle spring steel. Trans. Korean Society of Automotive Engineers 11, 1, 185-192
  11. Tange, A. and Takamura, N. (1990). Relation between shot-peening residual stress distribution and fatigue crack propagation life in spring Steel. Proc. 4th Int. Conf. Shot Peening, 1, Tokyo, 243-253
  12. Wraglen, G. (1972). An Introduction to Corrosion and Protection of Metals. Institute for Metallskydd. Stockholm