Metallic Glacial Glass Formation by a First-Order Liquid-Liquid Transition

J. Shen, Z. Lu, J. Q. Wang, S. Lan, F. Zhang, A. Hirata, M. W. Chen, X. L. Wang, P. Wen, Y. H. Sun*, H. Y. Bai, W. H. Wang

*この研究の対応する著者

研究成果: Article査読

21 被引用数 (Scopus)

抄録

The glacial phase, with an apparently glassy structure, can be formed by a first-order transition in some molecular-glass-forming supercooled liquids. Here we report the formation of metallic glacial glass (MGG) from the precursor of a rare-earth-element-based metallic glass via the first-order phase transition in its supercooled liquid. The excellent glass-forming ability of the precursor ensures the MGG to be successfully fabricated into bulk samples (with a minimal critical diameter exceeding 3 mm). Distinct enthalpy, structure, and property changes are detected between MGG and metallic glass, and the reversed "melting-like"transition from the glacial phase to the supercooled liquid is observed in fast differential scanning calorimetry. The kinetics of MGG formation is reflected by a continuous heating transformation diagram, with the phase transition pathways measured at different heating rates taken into account. The finding supports the scenario of liquid-liquid transition in metallic-glass-forming liquids.

本文言語English
ページ(範囲)6718-6723
ページ数6
ジャーナルJournal of Physical Chemistry Letters
11
16
DOI
出版ステータスPublished - 2020 8月 20
外部発表はい

ASJC Scopus subject areas

  • 材料科学(全般)
  • 物理化学および理論化学

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