|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Bulk Metallic Glasses XV
||High Pressure Quenched Metallic Glasses
||Wojciech Dmowski, Stanislaw Gierlotka, Yoshihiko Yokoyama, Takeshi Egami
|On-Site Speaker (Planned)
High Pressure Quenched (HPQ) glasses are prepared by heating to the supercooled liquid state under hydrostatic pressure and then quenching to room temperature. HPQ glasses are stable in ambient condition i.e. at RT and ambient pressure. The HPQ samples have a different structure and mirror the pressure induced structure in the liquid state. The HPQ structure is not due to structural relaxation, which is a standard ageing process for glasses; HPQ sample transforms back to the structure, quenched without pressure, which proves that pressure induced change is not caused by nano-crystallization either. The data suggest that pressure induces a phase transition in the supercooled liquid. The pair distribution function shows that without pressure the Zr neighbour shell of Zr is distorted, whereas such distortion is removed by applying pressure in the liquid state and the structure becomes better packed.
Work supported by the U.S. DOE, DE-AC05-00OR-22725.
||Planned: Supplemental Proceedings volume