About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
2024 Technical Division Student Poster Contest
|
Presentation Title |
SPG-38: Grain Interface Functional Design to Create Damage Resistance in Polycrystalline Metallic Materials |
Author(s) |
Olajesu Favor Olanrewaju, Manish Kumar, Kevin Jacob, Curt Bronkhorst, Nan Chen, Marko Knezevic, William Musinsky, Manny Gonzales, Sid Pathak |
On-Site Speaker (Planned) |
Olajesu Favor Olanrewaju |
Abstract Scope |
Our NSF-DMREF project aims to achieve increased damage tolerance by revolutionizing and accelerating the material design and manufacturing cycle. Our approach focuses on material features—grain boundaries/interfaces, and the internal stress state to create damage resistance in metallic materials. Our approach utilized a high-throughput spherical nanoindentation technique to quantify the local deformation within specific crystallographic orientations and boundary regions in polycrystalline Ta (our model BCC refractory material). We complemented our experimental approach with crystal plasticity simulations and statistical interdependence uncertainty quantification. We further demonstrated our experimental capabilities by a) identifying the local indentation yield strengths in individual grains of deformed polycrystalline metallic samples and correlating them to an increase in the local slip resistances; b) connecting the stored energy differences of individual grains to their Taylor factors in response to applied cold work; and c) comprehending the function of interfaces, like grain boundaries, in the deformation of a multi-phase polycrystalline sample. |
Proceedings Inclusion? |
Undecided |
Keywords |
Other, Modeling and Simulation, Mechanical Properties |