| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Bulk Metallic Glasses XX
|
| Presentation Title |
Investigation of Non-isothermal Crystallization and Mechanical Properties of Zr-based Metallic Glass with Enhanced Icosahedral Ordering |
| Author(s) |
Myeongjun Lee, Geun Hee Yoo, Min Kyung Kwak, Wook Ha Ryu, Eun Soo Park |
| On-Site Speaker (Planned) |
Myeongjun Lee |
| Abstract Scope |
Limited plasticity in room temperature has been the obstacle for engineering application of metallic glasses. One way to overcome this problem is introduction of icosahedral medium-range order. In our past study, we have shown that substitution of Cu to TiNbTaMo high entropy alloy with optimum amount can enhance plasticity of Zr-Cu-Ni-Al metallic glass. Such composition is expected to have enhanced icosahedral cluster, which may act as effective nucleation site. In the present study, utilizing Flash DSC, we investigated the effect of icosahedral cluster on crystallization behavior of Zr-Cu-Al-Ni metallic glass by experimentally establishing CHT diagram in a wide temperature/time range. Then, by conducting nanoindentation experiment, we studied the effect of icosahedral cluster on mechanical properties of metallic glass. We expect that our study provides some insight in studying the role of icosahedral ordering in metallic glass and method of controlling its degree. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Phase Transformations, Mechanical Properties, |