About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
|
Symposium
|
Algorithms Development in Materials Science and Engineering
|
Presentation Title |
High-Throughput Optimization of Cermet Coatings using Simulation and Experiments |
Author(s) |
Dylan Zilifian, Kevin Yan, Dong Zhao, Subrato Sarkar, Rahul Rahul, Jie Lian |
On-Site Speaker (Planned) |
Dylan Zilifian |
Abstract Scope |
Cermet coatings (ceramic-metal composites) fracture under thermomechanical loads primarily due to thermal expansion mismatches between their constituents. A viable option is a graded design with ceramic-metal composites as the interfaces. This research develops an automated high-throughput multi-objective optimization framework to design fracture-resistant multilayer cermet coatings on metal substrates. The primary objectives are to minimize residual stresses in the top ceramic layer, underlying interfacial layers (ceramic-metal composites), and reduce coating thickness. The design parameters include composition, thickness, and the number of cermet coating layers. Residual stress in the candidate design is evaluated by thermomechanical simulations using Abaqus® finite element software. Finite element models for the cermet composite layers are generated from experimental microstructures. Multi-objective optimization is performed by interfacing Abaqus® with the DAKOTA optimization toolkit. The obtained designs are experimentally fabricated and found to be fracture-free. Results show the effectiveness of the developed optimization framework in providing fracture-resistant cermet coatings. |
Proceedings Inclusion? |
Planned: |
Keywords |
Surface Modification and Coatings, Ceramics, Computational Materials Science & Engineering |