论文类型：期刊论文
发表刊物：INTERMETALLICS
收录刊物：EI、SCIE
卷号：44
页面范围：101-105
ISSN号：0966-9795
关键字：Intermetallics, miscellaneous; Phase transformation; Microstructure; Diffraction
摘要：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.