| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Bulk Metallic Glasses XIX
|
| Presentation Title |
Nature of the Medium-range Order Distinct from
the Short-range Order in Metallic Liquids |
| Author(s) |
Chae Woo Ryu, Takeshi Egami |
| On-Site Speaker (Planned) |
Chae Woo Ryu |
| Abstract Scope |
Structure-property relations of metallic liquids and glasses are difficult to identify owing to the absence of long-ranged translational periodicity. To unravel a long-lasting conundrum, we study the pair distribution function (PDF) of metallic liquids determined by X-ray scattering experiments and molecular dynamics simulation. The first peak of the PDF describes the short-range order (SRO) in the nearest neighbor atoms, whereas the peaks beyond the first peak represent the medium-range order (MRO). The disparate natures of the SRO and MRO are clearly seen not only in their variations with temperature but also in the dynamic correlations of atoms. The result suggests that the MRO is distinct in nature from the SRO and plays a major role in the viscosity of supercooled liquids. Our analysis provides valuable insight into elucidating the structure and properties of metallic liquid. |
| Proceedings Inclusion? |
Planned: |