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Title: Structural evolution of low-temperature liquid GaIn eutectic alloy

Journal Article · · Journal of Molecular Liquids
 [1];  [2];  [1];  [3];  [2];  [1];  [1];  [1]
  1. Zhejiang Univ., Hangzhou (China)
  2. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
  3. Technical Univ. of Denmark, Lyngby (Denmark)

Structural changes of liquid Galn eutectic alloy upon cooling from about 373 K to 242 K are studied by using in situ synchrotron radiation X-ray diffraction (XRD) combined with the ab initio molecular dynamics simulations (AIMD). The experimental and theoretical results show that no abnormal structural change is observed in the supercooled liquid region prior to crystallization. The XRD data exhibit that the liquid can crystallize into a mixture of orthorhombic Ga-I and body-centered tetragonal (bct)-In phases. Also, the AIMD calculations simulate the solidification process, forming a bct-like structure locally similar to bct-Ga-III and bct-In phases. The aggregation of In atoms forms In-rich zones, acting as the processor of crystallization. Our results provide an in-depth understanding of liquid Galn alloys and will trigger more interests to other metallic liquids. (C) 2019 Elsevier B.V. All rights reserved.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division; Natural Science Foundation of Zhejiang Province; Fundamental Research Funds for the Central Universities; National Natural Science Foundation of China (NSFC); National Key Research and Development Program of China
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1618121
Journal Information:
Journal of Molecular Liquids, Vol. 293, Issue C; ISSN 0167-7322
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

Figures / Tables (10)