|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Bulk Metallic Glasses XIV
||Pressure-induced Structural Change in Liquid Eutectic Ga85.8In14.2 Alloy
||Qing Yu, Xiaodong Wang, Yu Su, Azkar Saeed Ahmad, Qingping Cao, Dongxian Zhang, Jianzhong Jiang
|On-Site Speaker (Planned)
The structure of liquid eutectic Ga85.8In14.2 alloy was investigated up to a pressure of 13 GPa using synchrotron radiation x-ray diffraction in a diamond anvil cell combined with ab initio molecular dynamics (AIMD) simulation. The diffraction patterns revealed that the liquids crystallized into monoclinic phase in the vicinity of 3.0 GPa, which is in agreement with theoretical calculation. Further an increase in pressure resulted in rapid transformation of the high-pressure phase with triclinic structure until the monoclinic phase became completely transformed at 13 GPa. Besides, the high pressure phase can persist in this structure upon decompression to 3.7 GPa and become liquids by passing the transformation into the low pressure crystal. Static structural factor S(q) before and after compression indicated no structural changes in liquid GaIn alloy. Furthermore, AIMD calculation was performed to study the pressure-induced crystallization of liquid GaIn alloys and shed light on the an atomistic transformation mechanism.
||Planned: Supplemental Proceedings volume