| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Fatigue and Fracture IV: Toward Confident Use in Critical Applications
|
| Presentation Title |
Static and Dynamic Mechanical Properties of Selective Laser Melted Ti-6Al-4V Solid Material Printed with Optimized Argon Flow |
| Author(s) |
Oscar A. Quintana, Robert Rybolt, William Relue |
| On-Site Speaker (Planned) |
Oscar A. Quintana |
| Abstract Scope |
Shielding gas flow has been found to affect the stability of the process and consequently the quality of AM components. In addition to provide an inert atmosphere during the printing process, the argon flow removes process by-products, such as spatter and smoke that take place during the selective laser melting. Inefficient argon flow results in the interaction of the laser beam with the by-products, thereupon re-deposition on the melt pool. This has a negative impact on the surface morphology and density of the parts. In this study we investigated two argon flows (optimized vs non-optimized) and their effects on the tensile, and surface finish on Ti-6Al-4V samples (stress relieved) with different size dimensions and printing directions (horizontal vs vertical). Additional fatigue testing showed that samples printed with optimized flow had a 66% higher fatigue strength. The effects of argon flow on density and metallurgical characteristics of samples were also discussed. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |