About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing for Energy Applications IV
|
Presentation Title |
J-12: Microstructure Evolution and Mechanical Properties of Selective Laser Melted SB-CoNi-10 Superalloy |
Author(s) |
Evan B. Raeker, Sean Murray, Kira Pusch, Chris Torbet, Tresa Pollock |
On-Site Speaker (Planned) |
Evan B. Raeker |
Abstract Scope |
The microstructure of a new, high γ’ containing Co-Ni superalloy SB-CoNi-10 was analyzed following laser powder-bed fusion additive manufacturing. Both supersolvus and subsolvus HIP and solutioning treatments were explored that eliminated or retained the columnar microstructure after 3D-printing, respectively. The supersolvus treatments recrystallized the microstructure and resulted in an equiaxed grain structure while the subsolvus treatments maintained the columnar grain structure and developed varying γ’ morphologies based on cooling rate. The γ’ distribution of subsolvus treated specimens evolved to become bimodal during aging treatments. Mechanical testing specimens, with either their loading direction parallel to the build direction or perpendicular to the build direction, were subjected to a subsolvus HIP and solution and an aging treatment prior to testing. Preliminary results indicate a dependence of build direction relative to loading direction on the measured mechanical properties. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, High-Temperature Materials, Mechanical Properties |