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Indexed by:期刊论文

Date of Publication:2010-05-01

Journal:INTERMETALLICS

Included Journals:SCIE、EI

Volume:18

Issue:5

Page Number:791-795

ISSN No.:0966-9795

Key Words:Alloy design; Glasses; metallic; Mechanical properties at ambient temperature; Rapid solidification processing; Corrosion behavior

Abstract:The formation of Ni-based B-Fe-Ni-Si-Ta bulk metallic glasses is explored in this work. The alloy compositions are determined by using a combination of the cluster line approach, the minor alloying strategy and the substitutions of similar elements. The basic B-Ni-Si ternary compositions are first determined by the intersection points of different cluster lines, B-Ni cluster to Si and Ni-Si cluster to B, and then are minor-alloyed with 4 at.% Ta. Finally Fe is added to partially substitute for Ni to further improve the glass-forming abilities. Bulk metallic glasses with diameters of 3 mm are formed at compositions [Br-17.7(Ni1-xFex)(70.5)](Si7.8Ta4), x=0.35-0.45, which also exhibit good mechanical and corrosion-resistant properties. Furthermore, these compositions can be expressed using our cluster-plus-glue-atom model as [B-2(Ni,Fe)(8)](1)(Si,Ta)(1.33). BMGs with compositions satisfying [B-2(Ni,Fe)(8)](Si, Ta)(1) are also obtained. (C) 2009 Published by Elsevier Ltd.