Thermal expansion of bulk amorphous Zr_41.2Ti_13.8Cu_12.5Ni_10Be_22.5 alloy
Thermal expansion of bulk amorphous Zr_41.2Ti_13.8Cu_12.5Ni_10Be_22.5 alloy
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DOI：
10.1557/jmr.1996.0232
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发表时间：
1996-07
影响因子：
2.7
通讯作者：
Y. He;R. Schwarz;D. Mandrus
中科院分区：
文献类型：
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作者：
Y. He;R. Schwarz;D. Mandrus
测量了大块非晶 Zr_4.12Ti_13.8Cu_12 5Ni_10Be_22.5（原子百分比）合金在 80 K 至 773 K 范围内的线性热膨胀。T、T _ g 数据通过基于 Grüneisen 关系和热容 Debye 表达式的模型进行拟合。根据拟合结果，我们推导出 Grüneisen 参数 g = 1.25 和德拜温度 Q_D = 400 K。在 663 K（玻璃化转变温度 T _ g = 623 K 和结晶温度 T _x = 693 K 之间）对非晶合金进行退火，会在样品中产生粘性流动。这是由于过冷液体的粘度较小。
The linear thermal expansion of the bulk amorphous Zr_4.12Ti_13.8Cu_12 5Ni_10Be_22.5 (atomic percent) alloy has been measured from 80 K to 773 K. The data for T, T _ g were fitted by a model based on the Grüneisen relation and a Debye expression for the heat capacity. From the fit, we deduced the Grüneisen parameter, g = 1.25, and the Debye temperature, Q_D = 400 K. Annealing the amorphous alloy at 663 K, which is between the glass transition temperature T _ g = 623 K and the crystallization temperature T _x = 693 K, causes viscous flow in the sample. This is due to the small viscosity in the undercooled liquid.