FORMATION CHARACTERISTICS OF Al-Cu-Fe-Mg QUASICRYSTALS

摘要

Several Al-Cu-Fe-Mg powders were produced by rapid solidification.The powders are crystalline at room temperature,but start to be transformed into quasicrystals when being heated to 600°C and almost transformed to single icosahedral phase quasicrystals at about 800°C,and then,transformed into crystalline materials again at about 900°C.In this paper,the phase structural changes during heating,the composition range and formation characteristic of the Al-Cu-Fe-Mg quasicrystals are reported.