About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Deformation Mechanisms, Microstructure Evolution, and Mechanical Properties of Nanoscale Materials
|
Presentation Title |
Stress-assisted Structural Phase Transformation in Molybdenum-based Composites |
Author(s) |
Lijie He, Linh Vu, Zheming Guo, Ali K. Shargh, Niaz Abdolrahim |
On-Site Speaker (Planned) |
Niaz Abdolrahim |
Abstract Scope |
Structural phase transformation (PT) mechanism can become operational at high temperature or very high applied stresses and thus suppress sudden failure with minimal uniform macroscopic plastic deformation in nanoporous (NP) metals. For the first time, our results showed that the combination of microstructural features including small (defect-free) ligaments, tortuosity of the structure, and interfaces between core and secondary coating material, will enable a uniform distribution of high internal stresses through the entirety of NP and composite structures that can promote uniform PT and better ductility. PTs in NP/bicontinuous materials can, thus, play a central role in obtaining metal alloys with desired mechanical and functional properties such as improved strength and ductility. |
Proceedings Inclusion? |
Planned: |