Nanoquasicrystallization of Zr-based metallic glasses

Authors
Murty, BS Hono, K
Citation
Bs. Murty et K. Hono, Nanoquasicrystallization of Zr-based metallic glasses, MAT SCI E A, 312(1-2), 2001, pp. 253-261
Citations number
27
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN journal
09215093 → ACNP
Volume
312
Issue
1-2
Year of publication
2001
Pages
253 - 261
Database
ISI
SICI code
0921-5093(20010815)312:1-2<253:NOZMG>2.0.ZU;2-W
Abstract
Nanoquasicrystallization occurs in a number of Zr based metallic glasses. T his paper reviews the influence of various elements on the icosahedral phas e formation in Zr-based metallic glasses in order to understand the necessa ry conditions for nanoquasicrystallization. Icosahedral phase is stabilized in Zr65-xCu27.5Al7.5Ox alloys beyond a critical oxygen level, suggesting t hat oxygen is a factor to stabilize icosahedral phase formation in Zr-Cu(-N i)-Al based metallic glasses. On the other hand, Zr-based alloys containing Pd do not require oxygen for icosahedral phase formation. In the presence of Pd, even binary Zr100-xPdx (x = 30 and 35) alloys show nanoquasicrystall izaiton in the course of amorphous to crystal transformation. Based on our recent results together with other published investigations, the necessary conditions for quasicrystallization are discussed. (C) 2001 Elsevier Scienc e B.V. All rights reserved.