|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Powder Metallurgy of Light Metals
||Field Effects during Spark Plasma Sintering of AA5083 Powder
||Frank Kellogg, Brandon McWilliams, Kyu Cho
|On-Site Speaker (Planned)
Spark Plasma Sintering (SPS) has been well studied as a consolidation technique for nanostructured powders. SPS provides rapid heating and cooling rates that can create fully, or near fully, dense samples without significant grain growth. In this study, AA5083 powder samples produced with direct current SPS are compared to samples produced via resistive die heating as a function of processing temperature. Resistive heating profiles were accomplished by using electrically insulating boron nitride spacers to direct the current around the sample and through the die. Samples were consolidated over a temperature range of 250 to 500°C. Porosity and microstructure were examined using scanning electron microscopy. X-ray diffraction was used to identify precipitates produced from processing. Microhardness was used to compare the mechanical properties of the samples produced through the two methods. Density was measured using the Archimedes and helium pycnometry methods.
||Planned: EPD Congress Volume