| 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 |
Failure Mechanisms in Grading Inconel 625-GRCop 42 via Hybrid Wire-powder Directed Energy Deposition |
| Author(s) |
Somayeh Pasebani, Kuba Preis , Sriram Manoharan, Brian K Paul, Donghua Xu |
| On-Site Speaker (Planned) |
Somayeh Pasebani |
| Abstract Scope |
Multi-metal additive manufacturing requires the joining of dissimilar metals yielding joints that are prone to increased residual stress and the precipitation of brittle intermetallic phases. Compositionally graded alloys (CGAs) are materials in which two alloys are joined via transition layers with compositions selected to help avoid brittle phases and minimize residual stress. Although CGAs have been demonstrated across multiple material systems, a holistic design strategy for CGAs has yet to proposed. In this work, two CGAs are designed from Inconel 625 to GRCop42 and from Inconel 625 to a nickel-aluminum-bronze alloy by use of CALculation of PHAse Diagrams (CALPHAD) and a derived dissimilar metal residual stress coefficient. The CGAs are printed via a hybrid wire-powder directed energy deposition process. Failure mechanisms are discussed, and the ability to minimize brittle phases and residual stress is demonstrated. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |