Densification Behaviour Modelling for Metallic Powders

Abstract:

Powder forming involves fabrication of a preform by conventional press-and-sinter processing, followed by various forming processes, citing as examples, rolling, compaction, forging, extrusion, among others, of the porous preform into a final shape through substantial densification. This work makes a finite element analysis for porous metals. The finite element model was applied to simulating the case of compaction of nanocristalline copper under uniaxial compression conditions in order investigate the densification behavior. The model was simulated using explicit integration method as applied to the evolution variation of the relative density and the dislocation density of the compact. Finite element analysis program used was Abaqus. Finite element calculations were compared with literature data. The agreements between finite element model and literature results for densification of nanocristalline copper were good.

• Periodical: Materials Science Forum (Volume 802)
• Pages: 317-322
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.802.317
• Online since: December 2014
• Authors: Maria Carolina dos Santos Freitas, José Adilson de Castro, Luciano Pessanha Moreira, Flávia de Paula Vitoretti
• Keywords: Behavior Densification, Metallic Powder, Powder Forming

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