| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing for Energy Applications II
|
| Presentation Title |
Influence of Nickel Particle Sizes on the Spark Plasma Sintered NiCrCoTiAlW-Ta Superalloy Powder |
| Author(s) |
Olugbenga olugbenga Ogunbiyi |
| On-Site Speaker (Planned) |
Olugbenga olugbenga Ogunbiyi |
| Abstract Scope |
In the present study, seven different elemental powders were thoroughly mixed in a tubular mixer to form a superalloy powder. Spark plasma sintering method was used to densify aggregates mixture of NiCrCoTiAlW-Ta Superalloy powder. The nickel, which constitutes about 60% of the alloy, was varied over three different powder particle sizes, in the range of 3-44 µm, 45-106 µm and 106-150 µm. The powder was sintered at a temperature of 1100 \degc, using pressure of 32 MPa, heating rate of 100 \degc/min and 5 min holding time. Full densification was achieved within a short period, while the total processing time does not exceed 40 min. The microstructural features and phases were investigated by using scanning electron microscope and X-Ray diffraction machine. Microhardness and fracture toughness properties were equally investigated on the sintered alloys, and the resulting analysis shows some promising properties with respect to the decreasing starting powder particle sizes. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |