Deviation from icosahedral symmetry in rapidly solidified Al6Cu(Li, Mg)3

Deviations from perfect icosahedral m35 point-group symmetry in icosahedral particles in rapidly solidified Al―3Cu―1•5Li―1Mg and Al―3Cu1•5Li―1Mg―0.1Zr have been investigated experimentally by a combination of conventional and high-resolution transmission electron microscopy. The as-rapidly-solidified icosahedral particles are nearly spherical and are typically 0.1−0.2 μm in diameter