Quasicrystallization of (Zr65Al7.5Cu27.5)95Ti5 Glassy Alloy
Phase transformation in the melt-spun (Zr65Al7.5Cu27.5)95Ti5 glassy alloy was investigated by a combined use of X-ray diffraction (XRD), transmission electron microscopy (TEM) and differential scanning calorimetry (DSC). It was found that the crystallization mode of the Zr65Al7.5Cu27.5 glassy alloy was altered by the addition of Ti, and nanometer scaled icosahedral phase (I-phase) formation was observed in the primary crystallization stage of the (Zr65Al7.5Cu27.5)95Ti5 quaternary glass, which transformed to the stable Zr2Cu-type phase upon further annealing. The crystallization behavior of (Zr65Al7.5Cu27.5)95Ti5 glass was further discussed in terms of the activation energy as compared to that of Zr65Al7.5Cu27.5 alloy.
Young Won Chang, Nack J. Kim and Chong Soo Lee
J. B. Qiang et al., "Quasicrystallization of (Zr65Al7.5Cu27.5)95Ti5 Glassy Alloy", Materials Science Forum, Vols. 561-565, pp. 1329-1332, 2007