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测量Cu60Zr20Hf10Ti10块体金属玻璃和其晶化态合金在2～101K的比热,研究晶化过程对块体金属玻璃比热的影响。讨论晶化过程对Cu60Zr20Hf10Ti10块体金属玻璃低温比热和块体金属玻璃的波色峰的影响。结果表明:这两种合金的比热都与单一的德拜模型不相符,都存在着局域谐振模型(爱因斯坦模型)。分别用一个德拜模型和两个爱因斯坦模型拟合玻璃态合金,用一个德拜模型和一个爱因斯坦模型拟合晶化态合金,拟合结果与实验数据吻合得很好。
The specific heat of Cu60Zr20Hf10Ti10 bulk metallic glass and its crystalline alloy at 2 ~ 101K was measured to study the influence of crystallization process on the specific heat of bulk metallic glass. The effect of crystallization process on the low temperature specific heat of Cu60Zr20Hf10Ti10 bulk metallic glass and the color peak of bulk metallic glass was discussed. The results show that the specific heats of these two alloys are not consistent with a single Debye model, and both have local resonance models (Einstein model). The glassy alloys were fitted by a Debye model and two Einstein models, respectively. A Debye model and an Einstein model were fitted to the alloy in the as-synthesized state. The fitting results agree well with the experimental data.