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本文用透射电子显微镜研究了快速冷凝Ａｌ＿（４７）Ｃｕ＿（２５）Ｆｅ＿８Ｍｇ＿（２０）合金粉末。在淬火态粉末中，发现并确定了四个晶体相，在８００℃热处理的粉末中，观察到了Ｆ型二十面体准晶相。
In this paper, the rapid condensation of Al 47 Cu 25 Fe 8 Mg 20 alloy powders was investigated by transmission electron microscopy. In the quenched powder, four crystal phases were found and identified. F-type icosahedral quasicrystals were observed in the powder heat-treated at 800 ℃.