Nanoquasicrystallization of Zr-based metallic glasses

Murty, B. S. ; Hono, K. (2001) Nanoquasicrystallization of Zr-based metallic glasses Materials Science and Engineering A, 312 (1-2). pp. 253-261. ISSN 0921-5093

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/S0921-5093(00)01861-X

Abstract

Nanoquasicrystallization occurs in a number of Zr based metallic glasses. This paper reviews the influence of various elements on the icosahedral phase formation in Zr-based metallic glasses in order to understand the necessary conditions for nanoquasicrystallization. Icosahedral phase is stabilized in Zr65−xCu27.5Al7.5Ox alloys beyond a critical oxygen level, suggesting that oxygen is a factor to stabilize icosahedral phase formation in Zr-Cu(-Ni)-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 nanoquasicrystallizaiton 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.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Nanocrystallization; Amorphous; Metallic Glass; Quasicrystal; Icosahedral Phase
ID Code:73825
Deposited On:08 Dec 2011 03:47
Last Modified:08 Dec 2011 03:47

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