About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
In-Situ Monitoring and Control of Solidification & Deformation Processes in Metal Additive Manufacturing
|
| Presentation Title |
Predicting Deposition Height and Properties in Directed Energy Deposition |
| Author(s) |
William Kunkel, Dan J. Thoma |
| On-Site Speaker (Planned) |
William Kunkel |
| Abstract Scope |
A predictive framework will be presented for controlling build rates and mechanical properties in directed energy deposition. 316L stainless steel is used as a model material. A dimensionless number that uses processing conditions and thermophysical properties predicts both powder capture efficiency and deposition height. To control performance, the deposition height and properties are linked. Processing parameters can control deposition height (0.3 to 1.1 mm), cooling rate (2×10<sup>3</sup> to 5×10<sup>2</sup> K/s), and hardness (160 to 219 HV). Systematic variation in the process parameters, with in situ monitoring, permits processing-structure-property relationships. Additionally, samples were fabricated with in situ deposition height changes, resulting in composite layers of differing hardness values. This framework establishes an a priori method between deposition height, cooling rate, and properties that can be adjusted in situ to achieve site-specific properties in a component. To evaluate the effectiveness and transferability of the strategy, the methodology is extended to C103. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Mechanical Properties, |