Abstract
Quasiperiodic phases or quasicrystals (QC) with symmetries 5 and 10 have been found in numerous alloy systems of Al with d-transition metals (TM). Apart from QCs, related periodic phases with complicated structures were also discovered in these systems. QCs are usually formed in the Al-rich regions between 60 and 85at.% Al. In binary Al–TM systems (TM=V, Cr, Mn, Fe, Co, Ni; Mo, Ru, Rh, Pd; W, Re, Os, Ir, Pt), they are metastable and can be produced by rapid solidification. Binary QCs can be stabilized in a number of ternary alloy systems such as Al–Ni–(Fe, Co, Ru, Rh), Al–Cu–(Fe, Co, Ru, Rh) and Al–Pd–(Mn, Re). Some aspects of the systematics of their formation are discussed.
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