| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
2025 Technical Division Student Poster Contest
|
| Presentation Title |
SPG-52: Comparative Analysis of Mechanical Properties and Microstructures in Hot and Cold Wire Laser-Directed Energy Deposition of Stainless Steel 316 |
| Author(s) |
Nahal Ghanadi, Somayeh Pasebani |
| On-Site Speaker (Planned) |
Nahal Ghanadi |
| Abstract Scope |
This research investigates the effects of hot versus cold wire Laser-Directed Energy Deposition (LDED) on the material behavior and performance of stainless steel 316. A six-laser beam system with wire heating was employed to examine process efficiency, mechanical properties, and microstructural development. Samples fabricated with both processes were evaluated for mechanical properties, microstructure, and deposition efficiency variations. Mechanical testing was conducted parallel and perpendicular to the building direction to assess anisotropy in material performance. Microstructural analysis carried out using Electron Backscatter Diffraction highlighted differences in grain orientation, phase distribution, and solidification texture. Additionally, melt pool geometry was studied to understand its influence on penetration, dilution, and material integrity. Results demonstrate that the hot wire process enables higher deposition rates with consistent mechanical properties, whereas the cold wire route produces distinct microstructural and performance variations. Findings showcase LDED’s potential for tailoring microstructures and advancing additive manufacturing of stainless steel 316. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Additive Manufacturing, Iron and Steel, Mechanical Properties |