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利用铜模铸造法制备了(La0.6Ce0.4)65Al10Cu25块体非晶合金,并在其过冷液相区内不同温度下,采用不同压力对该非晶合金进行加压退火处理,通过X射线衍射仪和差示扫描量热法研究了加压退火处理对该非晶合金晶化行为及热稳定性的影响。结果表明,加压退火促进了(La0.6Ce0.4)65Al10Cu25非晶合金的晶化过程,使得晶化初始温度Tx降低(dTx/dP=-5.17K/GPa),晶化激活能Ep随退火压力的增加而增大,并从能量和化学短程序畴的角度解释了加压退火对(La0.6Ce0.4)65Al10Cu25非晶合金晶化过程的影响机理。
(La0.6Ce0.4) 65Al10Cu25 bulk amorphous alloy was prepared by copper mold casting, and the amorphous alloy was subjected to pressure annealing under different pressures in different temperatures in the supercooled liquid region. Through X Ray diffractometer and differential scanning calorimetry were used to study the effect of pressure annealing on the crystallization behavior and thermal stability of the amorphous alloy. The results show that the pressured anneal accelerates the crystallization of (La0.6Ce0.4) 65Al10Cu25 amorphous alloy, and the initial crystallization temperature Tx decreases (dTx / dP = -5.17K / GPa) The influence of pressure annealing on the crystallization process of (La0.6Ce0.4) 65Al10Cu25 amorphous alloy was explained from the perspective of energy and chemical short range.