해양환경안전학회지 (Journal of the Korean Society of Marine Environment & Safety)

  • 제19권5호
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  • Pages.545-551
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  • 2013
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  • 1229-3431(pISSN)
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  • 2287-3341(eISSN)
해양환경안전학회 (The Korean Society of Marine Environment and safety)
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쇼트피닝 시간에 따른 동합금의 조직특성 및 전기화학적 특성의 변화

Effects of Shot Peening Time on Microstructure and Electrochemical Characteristics for Cu Alloy

  • 한민수 (목포해양대학교 기관시스템공학부) ;
  • 현광용 (일본 나고야대학교) ;
  • 김성종 (목포해양대학교 기관시스템공학부)
  • Han, Min-Su (Division of Marine System Engineering, Mokpo Maritime University) ;
  • Hyun, Koang-Yong (Department of Materials, Physics and Energy Engineering, Graduate School of Engineering Japan, Nagoya University) ;
  • Kim, Seong-Jong (Division of Marine System Engineering, Mokpo Maritime University)
  • 투고 : 2013.07.23
  • 심사 : 2013.10.25
  • 발행 : 2013.10.31
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초록

본 연구에서는 내식성이 우수한 동합금에 대하여 내구성 향상을 위해 쇼트피닝 시간을 변수로 표면 개질하여 전기화학적 특성과 조직 변화를 관찰하였다. 그 결과 쇼트피닝 후 표면에 전체적으로 요철이 발생하였으며, 시간이 증가할수록 커버리지 향상에 따른 균질화 현상이 관찰되었다. 또한 쇼트피닝된 모든 시험편에서 경도가 향상되었으며, 쇼트피닝 시간이 3.5분일 때 52 %의 경도향상을 나타냈다. 그리고 이때 전기화학적 특성은 쇼트피닝을 실시하지 않은 경우와 유사하였다.

In this study, shot peening technique was employed with shot peening time for durability improvement and surface modification of copper alloy to investigate the electrochemical characteristics and microstructural variations. As a result of shot peening, roughness was distributed over the surface, and homogenization phenomenon was observed with increasing shot peening time due to the enhancement of coverage. The results revealed that hardness increased for shot peened specimens and particularly 3.5 mins of shot-peening time represented a hardness improvement of 52 %, showing similar electrochemical characteristics to that of the un-peened surface.

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참고문헌

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피인용 문헌

  1. Passivity of Spring Steels with Compressive Residual Stress vol.8, pp.10, 2018, https://doi.org/10.3390/met8100788
  2. Strategy for Surface Post-Processing of AISI 316L Additively Manufactured by Powder Bed Fusion Using Ultrasonic Nanocrystal Surface Modification vol.11, pp.5, 2021, https://doi.org/10.3390/met11050843