不同冷却速度对In凝固过程影响的模拟研究

Simulation study on the effect of different cooling rates on In during solidification process

采用分子动力学方法对In在相同初始状态下以不同速度冷却的凝固过程进行了模拟研究。以2.56×1013,2.56×1012Ks的速度的冷却,得到非晶态结构;以2.56×1011Ks的速度冷却,发生了明显晶化现象,玻璃转变温度约为300K。这一结果,对于如何正确选择冷却速度获得优良材料性能,将具有实际意义。

The effects of different cooling rates and the same initial conditions during solidification process of In has been studied by the moleular dynamics method. It has been found that:the amorphous structures are formed with 2.56×1013?2.56×1012 K/s cooling rate.While the crystal structures are formed with 2.56×1011K/s cooling rate.These results will have important practial significance to choose coo1ing rates correctly in order to obtain excellect mocroscopic properties.