High Pressure Quenched Glasses: unique structures and properties.

Abstract:

:Zr-based metallic glasses are prepared by quenching supercooled liquid under pressure. These glasses are stable in ambient conditions after decompression. The High Pressure Quenched glasses have a distinct structure and properties. The pair distribution function shows redistribution of the Zr-Zr interatomic distances and their shift towards smaller values. These glasses exhibit higher density, hardness, elastic modulus, and yield stress. Upon heating at ambient pressure, they show volume expansion and distinct relaxation behavior, reaching an equilibrated state above the glass transition. These experimental results are consistent with an idea of pressure-induced low to high density liquid transition in the supercooled melt.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Dmowski W,Yoo GH,Gierlotka S,Wang H,Yokoyama Y,Park ES,Stelmakh S,Egami T

doi

10.1038/s41598-020-66418-7

subject

Has Abstract

pub_date

2020-06-11 00:00:00

pages

9497

issue

1

issn

2045-2322

pii

10.1038/s41598-020-66418-7

journal_volume

10

pub_type

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