Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Fabrication and Tensile Properties of Alloy 617 base ODS Alloy

Alloy 617계 산화물 분산강화(ODS) 합금의 제조와 인장특성

  • 민형기 (연세대학교 신소재공학과) ;
  • 강석훈 (한국원자력연구원 원자력재료개발부) ;
  • 김태규 (한국원자력연구원 원자력재료개발부) ;
  • 한창희 (한국원자력연구원 원자력재료개발부) ;
  • 김도향 (연세대학교 신소재공학과) ;
  • 장진성 (한국원자력연구원 원자력재료개발부)
  • Received : 2011.07.27
  • Accepted : 2011.10.01
  • Published : 2011.12.28
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Abstract

Alloy 617, Ni-22Cr-12Co-9Mo base oxide dispersion strengthened alloy was fabricated by using mechanical alloying, hot isostatic pressing and hot rolling. Uniaxial tensile tests were performed at room temperature and at $700^{\circ}C$. Compared with the conventional Alloy 617, ODS alloy showed much higher yield strength and tensile strength, but lower elongation. Fracture surfaces of the tensile tested specimens were investigated in order to find out the mechanism of fracture mode at each test temperature. Grain adjustment during tensile deformation was analyzed by electron backscattered diffraction mapping, inverse pole figures and TEM observation.

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