|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Bulk Metallic Glasses XV
||G-18: Effect of Pressure on Viscous Deformation during Spark Plasma Sintering of Fe – Based Bulk Amorphous Alloy
||Tanaji Paul, Sandip P Harimkar
|On-Site Speaker (Planned)
The inherent role of pressure during spark plasma sintering of Fe48Cr15Mo14Y2C15B6 bulk amorphous alloy was analyzed under the theoretical framework of micro viscous deformation. Application of pressure resulted in deformation of spherical particles to polyhedra with flat facets. The small area of contact between adjacent particles led to the magnification of the applied pressure to a much higher local contact pressure by almost two orders of magnitude. Micro viscous deformation of individual particles between flat facets of neighboring ones increased progressively with an increase in the applied pressure. The total compressive viscous deformation of all such particles led to efficient filling of space and an overall increase in the final density of the sintered compact with increase in applied pressure. These results establish a significant advancement in the current understanding of the assistance of pressure during solid state processing of bulk metallic glasses.
||Planned: Supplemental Proceedings volume