한국소성가공학회:학술대회논문집 (Proceedings of the Korean Society for Technology of Plasticity Conference)

한국소성∙가공학회 (The Korean Society for Technology of Plasticity and materials processing)
권호 표지

나노결정금속의 경도의 결정립도의존성에 관한 연구

A Study on the Grain Size Dependence of Hardness in Nanocrystalline Metals

  • 김형섭 (충남대학교 금속공학과 및 급속응고신소재연구소) ;
  • 조성식 (충남대학교 금속공학과 및 급속응고신소재연구소) ;
  • 원창환 (충남대학 교 금속공학과 및 급속응고신소재연구소)
  • 발행 : 1997.03.01
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초록

Nanocrystalline materials have been modeled as a mixture of the crystallite and the grain boundary phases. The mechanical property has been calculated using the rule of mixtures based on the volume fractions. The critical grain size concept suggested by Nieh and Wadsworth and porous material model suggested by Lee and Kim were applied to the calculation. The theoretical results fit very well with the experimental values

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