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

• Published in: Scripta materialia Vol. 141; no. C; pp. 62 - 66
• Main Authors: Manière, Charles, Olevsky, Eugene A.
• Format: Journal Article
• Language: English
• Published: United States Elsevier Ltd 01.12.2017; Elsevier
• Subjects: Bulk modulus; Chemical and Process Engineering; Chemical Sciences; Engineering Sciences; Material chemistry; Materials Science; Mechanics; Mechanics of materials; Metallurgy & Metallurgical Engineering; Science & Technology - Other Topics; Shear modulus; Sinter-forging; Sintering; Spark plasma sintering; Visco-plastic model; Sinter-forging; Visco-plastic model; Spark plasma sintering; Shear modulus; Sintering; Bulk modulus; sinter-forging; bulk modulus; shear modulus; spark plasma sintering; visco-plastic model
• ISSN: 1359-6462; 1872-8456
• DOI: 10.1016/j.scriptamat.2017.07.026

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. [Display omitted]