• 제목/요약/키워드: Hall-Petch eq.

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나노결정금속의 경도의 결정립도의존성에 관한 연구 (A Study on the Grain Size Dependence of Hardness in Nanocrystalline Metals)

  • 김형섭;조성식;원창환
    • 한국소성가공학회:학술대회논문집
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    • 한국소성가공학회 1997년도 춘계학술대회논문집
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    • pp.73-76
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    • 1997
  • 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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