Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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The Effect of Residual Stresses on Surface Failure and Wear

잔류응력의 표면파손과 마멸에 대한 영향

  • Lee, Yeong-Je (Dept.of Mechanical Engineering, Sungkyunkwan University) ;
  • Kim, Jin-Uk (Dept.of Mechanical Engineering, Sungkyunkwan University)
  • 이영제 (성균관대학교 기계공학부) ;
  • 김진욱 (성균관대학교 기계공학부)
  • Published : 2002.04.01
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Abstract

Break-in is an intentional treatment to enhance the performance life of machinery parts and to maintain static friction behavior. Most studies on break-in have concerned only about surface conditions such as roughness or film formation. But the exact mechanism of break-in has not been found yet. Friction, scuffing behavior and wear of AISI 1045 were studied in relation to break-in and residual stress. The cylinder-on-disk type tribometer was used with the line-contact geometry. Scuffing tests were carried out using a constant load of 730N. In the break-in procedure the step load was applied from 100N to 200N. In this experiment, it was found that the break-in helps compressive residual stress to be formed well enough to enhance the scuffing life during the scuffing test. Specimens that had high compressive residual stress induced by shot-peening show better wear resistance than those were not shot-peened. Results of scuffing test, break-in procedure and wear amount in relation to residual stress have been discussed.

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References

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