Synthesis and Mechanical Properties of Conventionally Cast Icosahedral Particle-Reinforced Al-Mn(-Cu)-Be-Si Alloys
The microstructure of the Al-Mn(-Cu)-Be-Si alloys analyzed by X-ray diffraction and TEM consisted of icosahedral (i) quasicrystal particles embedded in aAl matrix. The conjoint addition of Si and Be elements enabled the i-phase formation in Æ10 mm specimens prepared by conventional casting technique. The size, volume fraction and stability of the i-phase were found to be dependent on the Mn content. The addition of 2 at.% Cu did not affect the formation and stability of the i-phase but contributed significantly to the enhancement of the mechanical properties.
Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie
E. Fleury et al., "Synthesis and Mechanical Properties of Conventionally Cast Icosahedral Particle-Reinforced Al-Mn(-Cu)-Be-Si Alloys", Materials Science Forum, Vols. 475-479, pp. 3359-3362, 2005