About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
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Symposium
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Additive Manufacturing: Materials Design and Alloy Development VI – Closed-Loop Alloy Design
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Presentation Title |
Reverse Design: Alloys Tailored for Green Body Printing and Sintering |
Author(s) |
Yannick Naunheim, Christopher A Schuh |
On-Site Speaker (Planned) |
Yannick Naunheim |
Abstract Scope |
While most commercial alloys are suitable for the classical cast-and-melting route, few are actually intended for solid state consolidation when processed in the form of powders. In this talk, we attempt to reverse this paradigm: Instead of processing a ready alloy, we develop an alloying concept for a base element that triggers rapid low-temperature consolidation mediated by chemical diffusion. The concept is based on phase decomposition from initially a supersaturated powder that forms interparticle necks at an early stage and pathways for rapid densification upon heating. We identify the thermodynamic and kinetic requirements that build the foundations for the alloying concept and suitable elements across the periodic table, exercised for a Ni-based alloy. The advantages of this alloy design approach are discussed in the light of the final microstructure, mechanical properties and the energy budget required for processing. |
Proceedings Inclusion? |
Planned: |
Keywords |
Process Technology, Additive Manufacturing, Phase Transformations |