| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing:
Incorporating Breakthrough Functionalities for Building Large Scale Components
|
| Presentation Title |
High Entropy Metamaterials: Influence of lattice architecture mixing for improved mechanical properties |
| Author(s) |
Isaac Toda-Caraballo, Souvik Sahoo, Dan Mordehai, Zhi Chen, Maria Teresa Pérez Prado |
| On-Site Speaker (Planned) |
Isaac Toda-Caraballo |
| Abstract Scope |
The present study explores the effect of mixing of various lattice architectures on the mechanical behavior of strut-based meta-lattices produced by selective laser melting with Inconel 718. The effect high entropy is explored in such mix, employing cubic-base lattice architectures (BCC, FCC, OT and SC) randomly distributed, but also by using special quasi-random structures (SQS) to maximize entropy. The mixing was carried out considering binary, ternary and quaternary meta-lattices, corresponding to using two, three or four lattice architectures respectively. Room temperature compression tests were performed in as-built condition. As opposite to pure lattices, all mixed lattices show pure bending with high specific yield strength and large energy absorption upon deformation. Finite element simulations have been performed to visualize the deformation mechanism in this high entropy metamaterials. The results indicate that the architectures mixing offers generally better mechanical properties than the rule of mixture using the results of the pure individuals. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Mechanical Properties, Modeling and Simulation |