열처리공학회지 (Journal of the Korean Society for Heat Treatment)

  • 제33권1호
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  • Pages.1-12
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  • 2020
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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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Ni/Ni3Al 단결정의 냉간압연 거동에 미치는 결정방위 및 석출물의 영향

Effects of Crystallographic Orientation and Precipitates on Cold Rolling Behavior of Ni/Ni3Al Single Crystal

  • 송성훈 (한국과학기술원 신소재공학과) ;
  • 위당문 (한국과학기술원 신소재공학과) ;
  • 박노진 (금오공과대학교 신소재공학부) ;
  • 오명훈 (금오공과대학교 신소재공학부)
  • Song, S.H. (Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST)) ;
  • Wee, D.M. (Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST)) ;
  • Park, No-Jin (School of Materials Science and Engineering, Kumoh National Institute of Technology (KIT)) ;
  • Oh, Myung-Hoon (School of Materials Science and Engineering, Kumoh National Institute of Technology (KIT))
  • 투고 : 2019.12.09
  • 심사 : 2019.12.27
  • 발행 : 2020.01.30
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초록

In this study, thin foil fabrication using Ni/Ni3Al single crystal was performed by cold-rolling. It was found that the cold-rolling behavior was strongly dependent on the initial crystallographic orientation rather than morphology of Ni3Al precipitates. The deformation banding was formed in the case of (100)[001]- and (210)[001]-oriented specimens at 83% reduction in thickness. However, the effects of Ni3Al precipitates morphology on the microstructure evolution of Ni/Ni3Al single crystals during cold-rolling were not so serious comparing with the effects of initial crystallographic orientation. Therefore, it could be concluded that the deformation behavior of Ni/Ni3Al single crystals at serious strain level was strongly dependent on the initial crystallographic orientation rather than the morphology of Ni3Al precipitates, whereas the initial deformation behavior was related to both crystallographic orientation and the morphology of Ni3Al precipitates.

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