Thermal properties of Mg–11Y–5Gd–2Zn–0.5Zr (wt.%) alloy
Thermal properties of Mg–11Y–5Gd–2Zn–0.5Zr (wt.%) alloy
复制标题
DOI：
10.1016/j.jallcom.2009.07.177
复制
发表时间：
2009-11
影响因子：
6.2
通讯作者：
Changjiang Chen;Qudong Wang;D. Yin
中科院分区：
文献类型：
--
作者：
Changjiang Chen;Qudong Wang;D. Yin
Mg-11 Y-5Gd-2 Zn-0.5Zr的比热容和线性热膨胀系数（重量%）合金热处理后，分别在100-400°C和25-400°C的范围内进行了研究。还在25°C、200°C和300°C下测量了合金的热导率和热扩散率。结果清楚地表明，合金的比热容和线性热膨胀系数随着温度的增加而增加，除了在225°C和318°C之间的峰值，这是由相变引起的。Mg-11 Y-5Gd-2 Zn-0.5Zr合金的室温热导率和热扩散率分别为23.0Wm-1 K-1和14.3×10 - 6 m2 s-1。过渡元素Y对材料的导热系数和热扩散系数有明显的影响。
The specific heat capacity and linear thermal expansion coefficient of Mg–11Y–5Gd–2Zn–0.5Zr (wt.%) alloy after heat treatment were investigated in the range of 100–400°C and 25–400°C, respectively. Thermal conductivity and thermal diffusivity of the alloy were also measured at 25°C, 200°C and 300°C. The results clearly show that the specific heat capacity and linear thermal expansion coefficient of the alloy increase with temperature, except for a peak value between 225°C and 318°C, which is caused by phase transformation. The values of the thermal conductivity and the thermal diffusivity of Mg–11Y–5Gd–2Zn–0.5Zr alloy at room temperature are 23.0Wm−1K−1and 14.3×10−6m2s−1, respectively. The transitional element Y has an effective influence on the thermal conductivity and thermal diffusivity.