In Situ Heating to Investigate Phase Transformations in Individual Powder Particles of a Gas-Atomized Icosahedral-Phase-Strengthened Al Alloy
Source abstract
Abstract
Gas atomization is a common method of producing metallic alloy powders by using a high-pressure gas to break up a stream of molten alloy. A fine dispersion of spherical powder particles with a constant average composition can be produced even from complex multi-component alloys. The other notable aspect of gas atomization is the high cooling rate (10 4 -10 8 K/s), which results in the formation of metastable phases and non-equilibrium microstructures in the powder particles. It is of interest to study how these radically different phases and microstructures evolve under thermal processing through in situ transmission election microscopy (TEM). However, powder particles larger than 5m are particularly challenging samples to study by in situ TEM.
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Research context
OpenAlex topics: Quasicrystal Structures and Properties · Aluminum Alloys Composites Properties · Aluminum Alloy Microstructure Properties
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References (5)
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1. These studies were performed in the UConn/ Thermo Fisher Scientific Center for Advanced Microscopy and Materials Analysis (CAMMA).
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