About this Abstract |
Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
Symposium
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2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
Presentation Title |
Lase Directed Energy Deposition of Multi-Material: Inconel 625 - GRCop42 |
Author(s) |
Somayeh Pasebani, Jacob Preis, Stephanie Lawson |
On-Site Speaker (Planned) |
Somayeh Pasebani |
Abstract Scope |
The joining of Cu-based dispersion strengthened alloys to Ni-based superalloys is necessary in parts which require high thermal conductivity from Cu-based alloy and high temperature tensile strength from the Ni-based superalloy. Such joints, however, are known to suffer from cracking when joined via liquid state processes due to constituent material mixing. In this work, the GRCop42-Inconel 625 phase diagram is decomposed by analysis of arc melted samples to determine the specific mechanisms and compositions responsible for cracking. Results show a lack of miscibility between Cu-deprived and Cu-rich liquids at compositions corresponding to 30-95 wt.% GRCop42. Inconel 625 GRCop42 joints are subsequently fabricated using powder laser-directed-energy-deposition and subjected to characterization in terms of present defects, grain morphology, and phases. Correlations are made between the arc melted samples the laser-directed-energy-deposition fabricated joint. Parameters are used to exact microstructural control over the joint, allowing for the avoidance of cracking. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |