About this Abstract |
Meeting |
MS&T21: Materials Science & Technology
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Symposium
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Integration between Modeling and Experiments for Crystalline Metals: From Atomistic to Macroscopic Scales III
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Presentation Title |
Combining DICTRA Simulations with In-situ TEM Experiments to Optimize Metallic Powder Heat Treatments |
Author(s) |
Kyle L. Tsaknopoulos, Matthew Gleason, Grace Fitzpatrick-Schmidt, Danielle Cote |
On-Site Speaker (Planned) |
Kyle L. Tsaknopoulos |
Abstract Scope |
In solid-state additive manufacturing, controlling the microstructure of metallic feedstock material is crucial, as it directly influences the properties of the final parts. Thermal processing is often used as a means of microstructural manipulation, tailoring the size, morphology, and distribution of secondary phases for desired material performance. In this study, heat treatments of Al 6061 powder are explored, with particular focus on associated phase transformations and diffusion kinetics, for end use in cold spray (CS) applications. In-situ transmission electron microscopy (TEM) heating experiments are leveraged to closely monitor the powder’s microstructural evolution as a function of treatment time and temperature. The time-morphology data of secondary phases procured from this experimentation can assist with the calibration and validation of DICTRA models. These models will allow for the optimization of heat treatment parameters, prediction of powder microstructures, and understanding of powder heat treatment effects on CS deposition and deposit properties. |