Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Analysis of Densification Behavior of Nano Cu Powders during Cold Isostatic Pressing

나노 구리 분말의 냉간정수압 공정에 대한 치밀화 거동 해석

  • 윤승채 (충남대학교 대학원 금속공학과) ;
  • 김형섭 (충남대학교 대학원 금속공학) ;
  • 이창규 (한국원자력 연구소)
  • Published : 2004.08.01
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Abstract

In the study, a hybrid constitutive model for densification of metallic powders was applied to cold isostatic pressing. The model is based on a pressure-dependent plasticity model for porous materials combined with a dislocation density-based viscoplastic constitutive model considering microstructural features such as grain size and inter-particle spacing. Comparison of experiment and calculated results of microscale and nanoscale Cu powders was made. This theoretical approach is useful for powder densification analysis of various powder sizes, deformation routes and powder processing methods.

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