Indexed by: Journal Article
Date of Publication: 2014-01-01
Journal: INTERMETALLICS
Included Journals: EI、SCIE
Volume: 44
Page Number: 101-105
ISSN: 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.