Formation of quasicrystals through peritectoid reactions from a non-equilibrium cubic phase prepared by mechanical alloying
1993; Taylor & Francis; Volume: 67; Issue: 6 Linguagem: Inglês
10.1080/09500839308240948
ISSN1362-3036
AutoresA.‐P. Tsai, T. Tsurui, A. Memezawa, K. Aoki, A. Indue, T. Masumoto,
Tópico(s)Intermetallics and Advanced Alloy Properties
ResumoAbstract Quasicrystals involving decagonal and icosahedral phases were formed, through two peritectoid reactions on low-temperature annealing, from a non-equilibrium cubic phase prepared by the ball milling of a mixture of equilibrium cubic phase and Al powders in Al—Cu—Co and Al—Cu—Fe systems. In both systems, the peritectoid reaction between residual Al and preliminary milled non-equilibrium cubic phase occurred first to form tetragonal Al7Cu2(Fe, Co) at 623 K. Subsequently, the same reaction between these tetragonal and the non-equilibrium phases occurred to form the quasicrystals at 773 K.
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