| About this Abstract |
| Meeting |
Materials Science & Technology 2020
|
| Symposium
|
Naval/Maritime Applications of Additively Manufactured Parts: Design and Experimental Approaches
|
| Presentation Title |
Direct Tension and Fatigue Characterization of AM Ti-6Al-4V Defects: A Microsample Approach |
| Author(s) |
Joao Santos, Michael Duffy, Steven Storck, Marc Zupan |
| On-Site Speaker (Planned) |
Joao Santos |
| Abstract Scope |
The Navy has an interest in being able to use Additively Manufactured (AM) parts on their Naval air fleet. By using AM parts, the Navy can improve fleet readiness and increase the speed of maintenance with on-demand part reproduction. In this study, AM Ti-6Al-4V with intentionally induced defects created via direct metal laser sintering are mechanically tested using both direct tension and fatigue MicroTensile testing techniques. These defects are produced by varying the process parameters away from standard processing levels, creating both keyhole and lack of fusion type defects. The effect of the defect type, size shape and level of defects, and as-built material microstructure on measured mechanical performance will be presented. The study has determined that not only is the volume fraction of defects important, but the source/type of the defect is critical to material mechanical performance. |