Thermal diffusivity and conductivity of supercooled liquid in Zr41Ti14Cu12Ni10Be23 metallic glass
Thermal diffusivity and conductivity of supercooled liquid in Zr41Ti14Cu12Ni10Be23 metallic glass
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DOI：
10.1063/1.1759768
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发表时间：
2004-05
影响因子：
4
通讯作者：
M. Yamasaki;S. Kagao;Y. Kawamura;K. Yoshimura
中科院分区：
文献类型：
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作者：
M. Yamasaki;S. Kagao;Y. Kawamura;K. Yoshimura
采用激光闪光法测量了Zr41Ti14Cu12Ni10Be23块体非晶合金及其晶态合金在室温至700 K温度范围内的非晶固体和过冷液体的热扩散率。的非晶固体的热扩散率和电导率是弱的温度依赖性，并随着温度的升高而增加的玻璃化转变温度。过冷液体的热扩散率约为3.5×10−6 m2 s−1，且随温度变化相当稳定。在室温至晶化温度范围内，Zr41Ti14Cu12Ni10Be23合金的非晶固体和过冷液体的热扩散系数和热导率均低于晶态合金。
We measured the thermal diffusivity of amorphous solid and supercooled liquid in a Zr41Ti14Cu12Ni10Be23 bulk metallic glass (BMG) and its crystalline counterpart alloy at temperatures ranging from room temperature to 700 K, using a laser flash method. The thermal diffusivity and conductivity of the amorphous solid were weakly temperature dependent and increased with increasing temperature up to the glass transition temperature. The thermal diffusivity of the supercooled liquid was approximately 3.5×10−6 m2 s−1 and quite constant with temperature. The amorphous solid and supercooled liquid of Zr41Ti14Cu12Ni10Be23 BMG showed lower thermal diffusivity and conductivity than the crystalline counterpart in the range from room temperature to crystallization temperature.