研究了喷射成形和铜模吸铸法制备的La62Al15.7(Cu,Ni)22.3块体非晶合金的晶化行为.结果表明,两种工艺制备的非晶合金晶化过程都为三级晶化,晶化的顺序为:非晶→非晶+ La→非晶+La+Al3La→非晶+La+ Al3La+富Cu和Ni的未知相.结合晶化动力学计算和退火晶化实验结果表明,低温(＜503 K)时,喷射成形La62Al15.7(Cu,Ni)22.3非晶合金的热稳定性优于铜模吸铸La62Al15.7(Cu,Ni)22.3非晶合金,高温(＞553 K)时结果相反.
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