Constitutive Model for Cold Compaction of Ceramic Powder

Kim, Hyoung Seop; Oh, Sung-Tag; Lee, Jai-Sung

doi:10.1111/j.1151-2916.2002.tb00422.x

Cited by 10 publications

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“…For precise control the deformation process of materials, pressure-dependent plasticity theories with numerical methods have been widely used for both porous [5][6][7][8] and solid materials. The densification behavior of magnesium powders during cold isostatic pressing was investigated in this study using gas atomized magnesium powders.…”

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confidence: 99%

Yield and Densification Behavior of Rapidly Solidified Magnesium Powders

et al. 2008

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In order to obtain high-quality products in powder metallurgy, it is important to control and understand the densification behavior of metallic powders. The effect of the powder characteristics of magnesium powders on the compaction behavior was investigated in this study by experimental and theoretical methods. A modified version of Lee-Kim's plastic yield criterion, known as the critical relative density model, was applied to simulate the densification behavior of magnesium powders, and a new approach that extracts both the powder and the matrix characteristics was developed. The model was implemented via the finite element method, and powder compaction under upsetting conditions was simulated. The calculated and experimental results are in good agreement.

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confidence: 99%