About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Aluminum Alloys: Development and Manufacturing
|
| Presentation Title |
Approaches to Full Density Consolidation of Al and Al Alloy Powders |
| Author(s) |
Steven C. Johnson, Jayson O Arichavala, Anita Ghodsi |
| On-Site Speaker (Planned) |
Steven C. Johnson |
| Abstract Scope |
Consolidation of gas atomized aluminum (Al) and Al7075 alloy powders to full density by conventional press and sinter (P + S) processing is challenging due to powder particle surface oxide layers impeding solid and liquid state densification. Spark plasma sintering (SPS) allows for the consolidation of loose Al and Al7075 powder to near full density. SPS is purported to upset powder surface oxide layers allowing for interparticle diffusion and densification below the powder melting temperature. Experimental results are presented comparing P + S and SPS consolidation of the same Al and Al7075 gas atomized powders with specific attention to the density achieved. Thermodynamic modeling of Al and Al7075 with small concentrations of oxygen and surface analysis of Al and Al7075 powders quantitatively identify the powder surface oxide layers. Results of this work are intended to better explain SPS densification and increase understanding of Al and Al alloy powder consolidation. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Aluminum, Powder Materials, Other |