利用差示扫描量热法(DSC)和原位X射线衍射法(In Situ XRD)研究了Zr<,60>Al<,15>Ni<,25>大块非晶合金的晶化行为.DSC研究结果表明,合金的玻璃转变温度Tg、品化开始温度Tx、晶化峰温度T<,p>分别为407.0℃、482.4℃和496.9℃,过冷液相区△Tx为75.4℃,合金具有良好的热稳定性;XRD检测其晶化相为Zr<,6>NiAl<,2>相和Zr5Ni4Al相,三元品化相的不易形成是合金高热稳定性的主要原因.通过计算合金在不同温度下的结晶度发现,在低温状态下,结晶度很小,但随着温度的升高迅速变大;在高温状态下,因为剩余非晶相越来越少,温度的升高对结晶度的贡献变小.
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