|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Bulk Processing of Nanostructured Powders and Nanopowders by Consolidation
||Spark Plasma Sintering of Nanostructured AA5083 Powder with Varying Cryomilling Duration
||Frank Kellogg, Benjamin Boesl, Clara Hofmeister, Anit Giri, Yongho Sohn, Kyu Cho, Brandon McWilliams
|On-Site Speaker (Planned)
Spark Plasma Sintering (SPS) is being considered as a potential consolidation technique for cryomilled nanostructured AA5083 powders. An advantage of SPS over other powder consolidation techniques is that it applies heat by passing an electrical current through a powder providing rapid heating and cooling rates that can lead to fully sintered parts without compromising the nanostructure of the powder. SPS was applied to nanocrystalline AA5083 powders cryomilled for various times to explore the influence of cryomilling time on the consolidation. SPS was conducted at various temperatures from 250 - 500°C to determine the effect of process temperature on the microstructure and density of the sintered part. The density was measured using the Archimedes and helium pycnometry methods. X-ray diffraction was used to analyze grain size and phase analysis. The distribution of secondary phases was investigated using scanning electron microscopy. Microhardness testing was used to estimate the mechanical properties.
||Planned: A print-only volume