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

研究成果: Article査読

8 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 20
外部発表はい

ASJC Scopus subject areas

  • Materials Science(all)
  • Physical and Theoretical Chemistry

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