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Indexed by:期刊论文

Date of Publication:2017-06-01

Journal:INTERMETALLICS

Included Journals:SCIE、EI

Volume:85

Page Number:176-179

ISSN No.:0966-9795

Key Words:Metallic glasses; Alloy design; Electronic structure; Microstructure; Physical properties

Abstract:It is known that bulk metallic glass compositions can be well interpreted by cluster formulas for stable liquids [cluster](glue atom) 1 or 3, where the clusters are derived from relevant devitrification phases. In the present work, the glass forming composition formulas in Ni-Nb and Ni-Ta systems are fully examined. The procedures include choosing the appropriate eutectic crystalline phases, selecting the principal clusters via the criteria such as spherical periodicity and cluster isolation degree, and determining the glue atoms. After strictly following these procedures, the best glass forming compositions Ni62Nb38 in Ni-Nb system and the range 59-62 at.% Ni in Ni-Ta system are explained by formulas [Ni-Nb4Ni8] Nb2Ni and [M-Ni6Ta6] Ni-3 (M is a random mixture of Ni and Ta) respectively. (C) 2017 Elsevier Ltd. All rights reserved.