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현가용 SUP-9강의 부식특성에 미치는 압축잔류응력의 영향
박경동(K. D. Park),최종완(J. W. Choi),기우태(W. T. Ki),박광(K. Park) 한국동력기계공학회 2007 한국동력기계공학회 학술대회 논문집 Vol.- No.-
The compressive residual stress, which is inducing by shot peening process, has the effect of increasing 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 in corrosion environment. In this study, the influence of shot peening and corrosion condition for corrosion property was investigated on immersed in supply water, 1% NaCl, 1% H₂SO₄. The immersion test was performed with two kind of specimen. The immersion periods was performed 6480hours(270days). Corrosion potential, weight loss were investigated from experimental results. From test results, the effect of shot peening on the corrosion characteristics was evaluated.