| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Process-induced Microstructures and Defects
|
| Presentation Title |
In-Situ Monitoring of Melt Pool Temperature, Size, and Cooling Rate of Directed Energy Deposition Inconel 625 and Correlations to Microstructure and Mechanical Properties |
| Author(s) |
Tait Mclouth, Julian Lohser, Paul Panetta, Paul Adams, Isabel Bayardo |
| On-Site Speaker (Planned) |
Tait Mclouth |
| Abstract Scope |
Inconel 625 specimen were produced using a blown powder DED system and monitored using in-situ cameras and pyrometers to detect the melt pool temperature, size, and cooling rate. The primary variable used in this study was the number of samples built simultaneously to achieve different interlayer times for each sample group while process parameters were held constant. It was observed that with an increase in the interlayer time there were corresponding decreases in the average melt pool size and temperature but an increase in the cooling rate. These changes in the melt pool metrics resulted in microstructure morphology and size differences detected by EBSD along with corresponding changes to the mechanical properties of samples via nanoindentation. Overall, it is shown that the interlayer time is a critical factor for microstructural development and mechanical behavior of DED IN625 that should be accounted for when designing for additive manufacturing. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Solidification, Other |