About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
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Symposium
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Additive Manufacturing: Materials Design and Alloy Development V – Design Fundamentals
|
Presentation Title |
Development of a Methodology for AM-compatible Rapid Alloy Development |
Author(s) |
Philipp Stich, Markus Apel, Mustafa Megahed, Patrick Köhnen, Christian Haase |
On-Site Speaker (Planned) |
Philipp Stich |
Abstract Scope |
In accordance with recent efforts to design new alloys available for AM processing, this study is contributing towards the development of a methodology for alloy development through a combination of theoretical and physical alloy screening. A hard-to-weld nickel-based superalloy is initially produced and parameterized on an EOS-M290.
The LPBF-process is simulated to calculate the thermal conditions occurring under varying energy inputs. Elements critical to hot cracking, which were identified using various microstructural characterization techniques, are varied simulatively (phasefield + CALPHAD) to characterize their segregation behaviour within the calculated thermal boundary conditions.
Being able to understand the undergoing mechanism leading to crack occurrence, we now derive criteria for an automated CALPHAD-based alloy screening tool, that can rapidly calculate from large alloy design spaces. Modifications of the reference alloy are atomized and processed. By comparison to the reference alloy, the next iteration for the alloy development is initialized. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Computational Materials Science & Engineering, High-Temperature Materials |