APT characterization of some iron-based bulk metallic glasses

M. K. Miller; C. T. Liu; J. A. Wright; W. Tang; K. Hildal

doi:10.1016/j.intermet.2006.01.040

APT characterization of some iron-based bulk metallic glasses

Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review

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Author(s)

M. K. Miller
C. T. Liu
J. A. Wright
W. Tang
K. Hildal

Detail(s)

Original language	English
Pages (from-to)	1019-1026
Journal / Publication	Intermetallics
Volume	14
Issue number	8-9
Publication status	Published - Aug 2006
Externally published	Yes

Link(s)

DOI	DOI https://doi.org/10.1016/j.intermet.2006.01.040 Final Published version
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Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-33646489959&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(7f5f7059-5628-46e1-b5d5-babac0610401).html

Abstract

A microstructural characterization was performed on 3 iron-based bulk metallic glasses. These alloys were an arc cast Fe₆₁Y₂Zr₈Co₆Al₁Mo ₇B₁₅ A2 alloy, a twin roll cast Fe₆₈Y₂Zr₂Nb₂Cr_1.5 V_4.5B₂₀ DarpaQ21 alloy and a vacuum induction melted Fe_50.7Y_1.5Cr_14.5Mo₁₃C_{14 .8}B_5.5 Darva101-Y alloy. The alloys were characterized by scanning electron microscopy and atom probe tomography in the as-cast condition. Some micrometer and nanometer scale precipitates were observed in all 3 alloys indicating that the alloy compositions are not fully optimized in the as-cast state. The Darva101-Y alloy was also characterized after annealing above the onset of crystallization temperature for 1 h at 610 °C. This annealing treatment produced a mixture of crystalline phases: M₆(BC) and Fe₁₄Y₂B in addition to a high temperature M₂₃C₆ phase that is indicated from XRD and previous research. © 2006 Elsevier Ltd. All rights reserved.