| About this Abstract |
| Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
| Symposium
|
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
| Presentation Title |
Laser Tempering for Hybrid Additive Manufacturing |
| Author(s) |
Shohom Bose-Bandyopadhyay, Nicole Van Handel, Joseph Fletcher, Christopher Saldaņa, Thomas Kurfess, Kyle Saleeby |
| On-Site Speaker (Planned) |
Shohom Bose-Bandyopadhyay |
| Abstract Scope |
Additively manufactured parts, particularly tool steels, often suffer from high hardness due to the extreme thermal gradients that arise during printing. In order to machine parts to a desired surface finish, heat treatment is often necessary. Laser-based machining is an established strategy for decreasing workpiece hardness and can be employed during or after machining processes. However, there is little research available on laser tempering additively manufactured parts. We propose a single-machine hybrid workflow where a powder blown directed energy deposition laser used to perform tempering. An initial feasibility test is presented wherein disks of H13 were printed and tempered with variable laser power, standoff distance, and exposure time, with softening of up to 55% HV observed. Preliminary microstructural analysis is presented and discussed as compared to conventional tempering in literature. Initial tests from thermal monitoring are also shared, with intention of future thermal modeling. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |