| 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 |
AM Process Development of NASA HR1 Alloy using Laser Powder Direct Energy Deposition (LP-DED). |
| Author(s) |
Javier E. Lares, Paul Gradl, Colton C Katsarelis,, Francisco Medina, Ryan Wicker, Dana Godinez |
| On-Site Speaker (Planned) |
Javier E. Lares |
| Abstract Scope |
NASA HR1 alloy is an iron-nickel based material designed by NASA and derived from A286 and JBK-75 alloys. At extreme conditions, NASA HR1 possess high strength, high fatigue resistance, and high resistance to corrosion and hydrogen embrittlement resistance. The main applications include structural components and liquid rocket engine nozzles with internal cooling channels. NASA has produced HR1 using vacuum induction melting (VIM), a considerably expensive fabrication method. Aimed to explore other more affordable and accessible manufacturing methods, HR1 specimens were fabricated under different parameters using LP-DED and were heat treated through stress relief, homogenization, solution treatment and aging. The feasibility of this AM process was investigated by evaluating mechanical and microstructural analyses on specimens. This work finalizes with discussion and remarks on tensile and low-cycle fatigue properties and its relationship with microstructural features. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |