| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Bulk Metallic Glasses XX
|
| Presentation Title |
J-79: Comprehensive Investigation of Glass Formation Behavior of Ni-based Binary Alloys Considering Thermodynamics and Kinetics |
| Author(s) |
Min Kyung Kwak, Heh Sang Ahn, Wook Ha Ryu, Eun Soo Park, Myeongjun Lee |
| On-Site Speaker (Planned) |
Myeongjun Lee |
| Abstract Scope |
Metallic glass(MG) differs from crystalline in that it can undergo superplastic or thermoplastic deformation due to glass transition. Glass transition, reflecting the average bonding nature of MG, occurs at different temperatures depending on the alloy composition. Interestingly, in binary MGs with a relatively simple atomic structure, the correlation between composition and glass transition temperature (Tg) can be quantitatively analyzed. Here we comprehensively show the glass transition behavior of Ni-Zr MGs depending on composition and heating rate. Continuous heating transformation diagrams were constructed for three eutectic compositions, based on detailed thermal analysis through continuous heating experiments in a wide range of heating rates up to 10^4 K/s via Flash DSC. Through this study, we clarified the glass transition kinetics of Ni-Zr binary MGs in a wide composition range. We anticipate our study to serve as a basis for predicting Tg of metallic glass, given the alloy composition and heating rate. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Phase Transformations, |