| About this Abstract |
| Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Symposium
|
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Presentation Title |
Comparison of Process Control Methods for Wire-arc Directed Energy Deposition of Low Carbon Steels with In-situ Temperature Measurement |
| Author(s) |
Ahamed Ameen, Vit Janik, Joanna Nicholas, Xiang Zhang, Cui Er Seow |
| On-Site Speaker (Planned) |
Ahamed Ameen |
| Abstract Scope |
Additive manufacturing (AM) techniques enable the production of near-net shape parts. Wire-arc direct energy deposition (DED) can achieve a higher deposition rate among metal AM methods. Conventional arc welding requires a maximum interpass temperature to limit any reduction in mechanical properties, but this may not be practicable for wire-arc DED. In this study, two inter-pass process control methods, one with maximum interpass surface temperature and the other with constant dwell time, were adopted to deposit low-carbon steel walls while maintaining the same feedstock and heat input values. Thermocouples were inserted at three different positions in the walls during deposition, to record the thermal profiles. Testing of samples extracted from walls exhibited comparable tensile strength (~10 MPa difference) and consistent hardness values. Microstructural evaluation showed the presence of interlayer regions with alternating coarse and fine bands of ferrite grains, irrespective of interpass control method suggesting dwell time control for better productivity. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |