|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Materials Research in Reduced Gravity
||Metallic Liquid Structures, Properties, and Phase Transitions – Ground-Based Studies for ISS Experiments
||Ken Kelton, Anup Gangopadhyay, Matthew Blodgett
|On-Site Speaker (Planned)
Our ground-based studies of electrostatically-levitated supercooled liquids demonstrate that the atomic structures of metallic liquids play a key role in their physical properties and in the phase transitions that occur. The development of structural order in the liquid couples to the nucleation barrier and is the source of a liquid/liquid phase transition in a bulk metallic-glass forming liquid. We have identified a structural origin to liquid fragility, generally defined from the temperature dependence of the viscosity. We have identified a high temperature crossover in the viscosity that heralds the glass transition. Upcoming ISS studies will enable further investigation of this from specific heat, viscosity and electrical resistivity measurements, and also allow the first investigations of a new type of coupling in crystal nucleation in primary crystallizing liquids, resulting from a linking of the stochastic processes of diffusion with interfacial-attachment. Partially Supported by NASA (NNX10AU19G) and the NSF (DMR-12-06707).
||Planned: A print-only volume