| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Local Chemical Ordering and Its Impact on Mechanical Behaviors, Radiation Damage, and Corrosion
|
| Presentation Title |
Developing super plastic bulk metallic glasses via manipulation of icosahedral ordering |
| Author(s) |
Geun Hee Yoo, Wook Ha Ryu , Chae Woo Ryu, Byeong Chan Lee , Jia-Lun Gu , Ke-Fu Yao, Eun Soo Park |
| On-Site Speaker (Planned) |
Eun Soo Park |
| Abstract Scope |
Icosahedral ordering, which has forbidden five-fold symmetry, is related to extraordinary properties in metallic glasses. However, there is little research on the complex relationship among microstructural variation with different degrees of icosahedral ordering, glass-forming ability, and mechanical responses through systematic changes in composition. Herein, we report the variation of quasi-glass forming ability and mechanical responses of Ti-Zr-Ni alloys by systematically controlling Be content. Notably, the stability of the icosahedral structure influences the extent of icosahedral medium-range order (IMRO) in metallic glass, and the deliberate control of IMRO emerges as a potent intrinsic factor for customizing the quasi-glass forming ability and deformation behavior of metallic glass. In particular, the Be20 1 mm rod samples, characterized by densely packed amorphous structures featuring frustrated IMRO, demonstrate remarkable compressive plasticity. Our findings suggest that systematic manipulation of IMRO in metallic glass holds promise as a novel guideline for designing super plastic bulk metallic glasses. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Phase Transformations, Mechanical Properties, Sustainability |