Heat Treatment of Gas-Atomized Powders for Cold Spray Deposition

Heat Treatment of Gas-Atomized Powders for Cold Spray Deposition

This communication demonstrates the efficacy of heat treatment on the improved deposition characteristics of aluminum alloy powders. A novel furnace was constructed for solutionizing of feedstock powders in an inert atmosphere while avoiding sintering. This furnace design achieved sufficiently high...

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Veröffentlicht in:Metallurgical and materials transactions. A, Physical metallurgy and materials science Physical metallurgy and materials science, 2018-02, Vol.49 (2), p.446-449
Hauptverfasser: Story, William A., Brewer, Luke N.
Format: Artikel
Sprache:eng
Schlagworte:
Alloy powders
Aluminum alloys
Aluminum base alloys
Atomizing
Characterization and Evaluation of Materials
Chemical precipitation
Chemistry and Materials Science
Cold treatment
Communication
Cooling rate
Heat treating
Heat treatment
Materials Science
Metallic Materials
Metallurgy
Nanotechnology
Powder metallurgy
Sintering (powder metallurgy)
Spray deposition
Structural Materials
Surfaces and Interfaces
Thin Films
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Zusammenfassung:This communication demonstrates the efficacy of heat treatment on the improved deposition characteristics of aluminum alloy powders. A novel furnace was constructed for solutionizing of feedstock powders in an inert atmosphere while avoiding sintering. This furnace design achieved sufficiently high cooling rates to limit re-precipitation during powder cooling. Microscopy showed homogenization of the powder particle microstructures after heat treatment. Cold spray deposition efficiency with heat-treated powders substantially increased for the alloys AA2024, AA6061, and AA7075.
ISSN:1073-5623
1543-1940
DOI:10.1007/s11661-017-4428-8