| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Solid Phase Processing Symposium
|
| Presentation Title |
Laser Assisted Cold Spray of AISI 4340 |
| Author(s) |
Dallin J. Barton, Venkata Satish Bhattiprolu, Clio Batali, Gregory B. Thompson, Luke N. Brewer |
| On-Site Speaker (Planned) |
Dallin J. Barton |
| Abstract Scope |
This presentation will discuss cold spray deposition of ferritic AISI 4340 steel through the assistance of in situ laser heating. Cold spray is widely applied to additive repair and manufacturing of metallic components, but good deposition efficiency and quality are difficult to achieve in high-strength materials because of the powder’s inability to undergo sufficient deformation upon impact. We have combined high-pressure helium gas cold spray with a 4 kW, infrared laser under closed-loop feedback control to enhance the spray characteristics of 4340 steel. Laser assisted cold spray (LACS) was able to successfully deposit 4340 steel powders into a fully-consolidated material. Substantial increases in mass deposition efficiency were observed as a function of increasing surface temperature. Using electron microscopy, we are examining the changes in material microstructure as a function of heat input during LACS, including the amount of martensite formed. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |