| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Heterostructured and Gradient Materials (HGM VI): Principle, Processing and Properties
|
| Presentation Title |
An Atomistic-to-Mesoscale Computational Analysis of the Internal Stress and Its Role in Controlling the Deformation Mechanisms of Gradient Structured Metallic Materials |
| Author(s) |
Liming Xiong, Thanh Phan |
| On-Site Speaker (Planned) |
Liming Xiong |
| Abstract Scope |
In this talk, we will present our recent development of a concurrent atomistic-continuum (CAC) method and its applicability in simulating the plastic deformation behavior of gradient structured materials by: (a) resembling the material’s grain structures from nano to microscale; (b) characterizing dislocation-GB reaction-induced back stresses and forward stresses; (c) determining the role of the back and forward stresses in cross slip, slip transfer, grain rotation, and GB sliding, respectively. In this way, a correlation between the microstructure, internal stresses, and deformation mechanisms for understanding the behavior of gradient structured materials will be quantitatively established from the bottom up. The connection of our atomistic-to-mesoscale simulations with experimental observations and a potential application of it in designing gradient structured materials will be also discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Mechanical Properties, Computational Materials Science & Engineering |