About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Materials Deposition by Cold Spray and Related Technologies III
|
| Presentation Title |
Enhancing Corrosion and Wear Properties of Cold Sprayed Scalmalloy via Heat Treatment |
| Author(s) |
Anil Lama, Denny John, Blanca Palacios, Tony Thomas, Tyler Dolmetsch, Tanaji Paul, Arvind Agarwal |
| On-Site Speaker (Planned) |
Anil Lama |
| Abstract Scope |
High-strength aluminum alloys are susceptible to corrosion and wear in marine applications due to undesirable phase transformations during processing. Scalmalloy was cold sprayed with helium (He) and nitrogen (N₂) gases, and heat treated at 325 °C/4hrs to avoid such transformation. Grain size remained unchanged (He-deposit ~1.0 µm, N2-deposit ~1.3 µm), with dissolution of β-Al2Mg3 phase into solid solution and precipitation of Al3(Scx,Zr1-x) after heat-treatment. These evolutions enhanced corrosion resistance by reducing galvanic coupling sites and facilitating protective film formation. Potentiodynamic tests showed 55% and 44% reduction in corrosion rate for He-deposit (from 1.59 × 10-4 to 0.70 × 10-4 mm/yr) and N2-deposit (4.22 × 10-4 to 2.37 × 10-4 mm/yr), respectively. Heat-treatment also improved wear behavior, with ball-on-disc tests showing lower wear rates and coefficient of friction. Overall, enhanced corrosion and wear resistance, driven by microstructural changes, highlight cold spray and heat-treatment as an effective strategy for manufacturing Scalmalloy for marine applications. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Aluminum, Characterization |