열처리공학회지 (Journal of the Korean Society for Heat Treatment)

  • 제31권1호
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  • Pages.12-17
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  • 2018
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  • 1225-1070(pISSN)
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  • 2508-4046(eISSN)
한국열처리공학회 (The Korean Society for Heat Treatment)
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열처리에 따른 미세구조 변화가 Ti 판재의 부식특성에 미치는 영향

The Effect of Microstructural Evolution on Corrosion Property of Ti Plate with Heat Treatment

  • 김민규 (부산대학교 나노융합기술학과) ;
  • 이찬수 (부산대학교 나노융합기술학과) ;
  • 김태규 (부산대학교 나노메카트로닉스공학과) ;
  • 김혜성 (부산대학교 나노메카트로닉스공학과)
  • Kim, Min Gyu (Department of Nano Fusion Technology, Pusan National University) ;
  • Lee, Chan Soo (Department of Nano Fusion Technology, Pusan National University) ;
  • Kim, Tae Gyu (Department of Nanomechatronics Engineering, Pusan National University) ;
  • Kim, Hye Sung (Department of Nanomechatronics Engineering, Pusan National University)
  • 투고 : 2018.01.08
  • 심사 : 2018.01.26
  • 발행 : 2018.01.30
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초록

We investigated the corrosion behavior of commercially pure cold working processed (CP)-Ti with coarse-grained (CG) microstructure heat-treated at $400^{\circ}C$ and $600^{\circ}C$, respectively. It is observed that corrosion resistance of as-received CP-Ti heat-treated at $400^{\circ}C$, at which recrystallization proceeds, is largely improved. Interestingly, the mechanical property of CP-Ti sample at $400^{\circ}C$ was scarcely deteriorated. It is attributed to the decrease of the defects such as strain variance and dislocation density. On the other hand, the annealing treatment at $600^{\circ}C$ of CP-Ti plate causes to grain growth with the noticeable reduction of mechanical property. Hence, it is considered that defect density such as strain and dislocation density is important microstructural parameter for the improvement of corrosion resistance. The introduction of proper annealing treatment can help to improve corrosion resistance without scarifying mechanical property of CP-Ti.

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참고문헌

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