About this Abstract |
Meeting |
MS&T21: Materials Science & Technology
|
Symposium
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Additive Manufacturing of Metals: Microstructure, Properties and Alloy Development
|
Presentation Title |
Evaluation of In-situ Alloyed, Additively Manufactured GRCop-42 |
Author(s) |
David S. Scannapieco, David Ellis, John Lewandowski |
On-Site Speaker (Planned) |
David S. Scannapieco |
Abstract Scope |
A novel additive manufacturing (AM) technique has explored in-situ alloying of GRCop-42 (ISGRCop). While AM approaches using in-situ alloying typically involve eutectic alloys, GRCop-42 (Cu-4 at% Cr-2 at% Nb) is nearly pure copper dispersion strengthened with Cr2Nb dispersoids, usually produced via gas atomization. Elemental powders were used in combination with high-energy ball milling to demonstrate the ability to use in-situ alloying to create GRCop-42. Phase extractions and X-ray diffraction of the Cr2Nb dispersoids formed via in-situ alloying established a metric for success and repeatability. The most influential processing factors included prior ball milling and AM laser power. Comparison to conventionally processed materials showed the dispersoid morphology and distribution of ISGRCop were similar to conventional GRCop-42. These dispersoids control the strengthening mechanisms in GRCop-42, therefore the similarities indicate ISGRCop-42 should achieve similar mechanical properties as gas atomized GRCop-42. |