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The Effect of Compress Residual Stress on Corrosion of the Shot Peened Spring Steel  

Park, Sung-Mo (Department of Computer Engineering, Pukyong National University)
Moon, Kwang-Seok (Department of Electronics Engineering, Pukyong National University)
Park, Keyong-Dong (Department of Mechanical Engineering, Pukyong National University)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.16, no.2, 2008 , pp. 35-42 More about this Journal
Abstract
The compressive residual stress due to shot peening process can increase the intrinsic fatigue strength of surface and therefore would be beneficial in reducing the probability of fatigue damage. However, it was not known that the effect of shot peening on corrosion environment. In this study, the influence of shot peening and corrosion condition on corrosion property was investigated on immersed in 3.5% NaCl, 10% $HNO_3$+3% HF, 6% $FeCl_3$. The immersion test was performed with two kind of specimens. The immersion test periods were carried out on performed 360days. Corrosion potential and weight loss were investigated from experimental results. From these results, the effect of shot peening on the corrosion characteristics was evaluated.
Keywords
Shot peening; Corrosion; Corrosion potential; Weight loss; Compressive residual stress;
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  • Reference
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