Improvement of the Corrosion Fatigue Life of Metal Material by Shot Peening

쇼트피닝가공에 의한 금속재료의 부식피로수명 개선

  • 남지헌 (서울산업대학교 산업대학원) ;
  • 구대림 (산업자원부 산업표준품질과) ;
  • 이국진 (서울산업대학교 산업대학원) ;
  • 이동선 (서울산업대학교 산업대학원) ;
  • 정성균 (서울산업대학교 기계공학과)
  • Published : 2004.10.01

Abstract

Corrosion highly affects to reduce lifetime and performance of machinery metallic components. The effects of shot peening on the fatigue life of metal material under corrosive environment are investigated in this paper. Experimental results show that the fatigue limit of shot peened specimen increases about 52$\%$. That means the fatigue life of metallic components is highly extended by shot peening. The corrosion greatly reduces the fatigue strength depending on the corrosive condition from one week up to one year. In case of shot peened specimen, the corrosion does not reduce the fatigue strength and fatigue life up to six months. It means that shot peening has superior effectiveness to reduce the influence of corrosion to the metallic materials.

Keywords