Abstract
In AlMn and AlCr systems, icosahedral phases are produced by radio-frequency (r.f.) sputter deposition and liquid quenching. The concentration ranges of transition metals in icosahedral phases for r.f. sputter deposits are higher than those for liquid-quenched samples. The growth habit of the icosahedral phase produced by r.f. sputter deposition is similar to that produced by liquid quenching. In the AlMn icosahedral phase, the thermal stability in both methods is similar. But in the AlCr system, the icosahedral phase produced by r.f. sputter deposition is more stable than that produced by liquid quenching. Bulk samples of icosahedral phase in an AlMnCrSi alloy are produced by strained powder rolling, to measure mechanical properties.
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