Porosity dependence of powder compaction constitutive parameters: Determination based on spark plasma sintering tests

Charles Manière (1) , Eugene A. Olevsky (1)

1 SDSU - San Diego State University

The modeling of powder compaction process, such as spark plasma sintering (SPS), requires the determination of the visco-plastic deformation behavior of the particle material including the viscosity moduli. The establishment of these parameters usually entails a long and difficult experimental campaign which in particular involves several hot isostatic pressing tests. A more straightforward method based on the coupled sinter-forging and die compaction tests, which can be easily carried out in a regular SPS device, is presented. Compared to classical creep mechanism studies, this comprehensive experimental approach can reveal the in situ porous structure morphology influence on the sintering process.

Keywords: Sintering; visco-plastic model; bulk modulus; shear modulus; sinter-forging; spark plasma sintering

Domains: Chemical Sciences; Material chemistry; Engineering Sciences [physics]; Mechanics [physics.med-ph]; Mechanics of materials [physics.class-ph]; Engineering Sciences [physics]; Chemical and Process Engineering

Charles Manière, Eugene A. Olevsky. Porosity dependence of powder compaction constitutive parameters: Determination based on spark plasma sintering tests. Scripta Materialia, 2017, 141, pp.62-66. ⟨10.1016/j.scriptamat.2017.07.026⟩. ⟨hal-02616817⟩