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http://dx.doi.org/10.4150/KPMI.2004.11.4.341

Analysis of Densification Behavior of Nano Cu Powders during Cold Isostatic Pressing  

윤승채 (충남대학교 대학원 금속공학과)
김형섭 (충남대학교 대학원 금속공학)
이창규 (한국원자력 연구소)
Publication Information
Journal of Powder Materials / v.11, no.4, 2004 , pp. 341-347 More about this Journal
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.
Keywords
Nano powder; Powder plasticity; Viscoplastic constitutive equation; Powder consolidation; Grain size effect; Dislocation density;
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Times Cited By KSCI : 1  (Citation Analysis)
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