|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Materials Processing Fundamentals
||Gleeble Sintering Simulations of Cryomilled Aluminum AA5083
||Frank Kellogg, Jennifer Sietins, Brandon McWilliams, Anit Giri, Steven Kilczewski, Kyu Cho
|On-Site Speaker (Planned)
The Gleeble 1500 can simulate thermo-mechanical processes (welding, rolling, forging, etc.) through heat and strain inputs. Due to its heating capabilities and controllable environment, it can be used to conduct sintering experiments. Through sample design, large thermal gradients can be introduced, creating a temperature range across the sample. These gradients can be used to simulate sintering over a large range of temperatures with one experiment. In this study, cryomilled aluminum AA5083 powder was cold-isostatic pressed at different pressures into rods of different green density values. After pressing, the samples were loaded into the Gleeble and heated to a set temperature of 600oC. Sample temperature was monitored through thermocouples and in situ digital image correlation. To study the effect of sintering and cold pressing parameters, the resulting samples were examined via x-ray computed tomography for porosity distribution, x-ray diffraction for grain size measurements, and scanning electron microscopy for microstructural evolution.
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