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Indexed by:期刊论文

Date of Publication:2014-01-01

Journal:INTERMETALLICS

Included Journals:SCIE、EI

Volume:44

Page Number:101-105

ISSN No.:0966-9795

Key Words:Intermetallics, miscellaneous; Phase transformation; Microstructure; Diffraction

Abstract:The transition of primary phases from the crystalline approximant phase to icosahedral quasicrystal phase (I-phase) is observed in the directional solidified Al-3Mn-7Be (at.%) alloy. The structures of I-phase and approximant phases are characterized by SEM, TEM and HRTEM. The addition of Be significantly enhances the formation ability of I-phase, combining with the directional solidification method where the growth rates and temperature gradients can be separately controlled, giving rise to a promising way to prepare quasicrystal-reinforced Al-matrix composite. (C) 2013 Elsevier Ltd. All rights reserved.