The effects of different cooling rates and the same initial conditions during solidification process of Ga has been studied by the molecular dynamics method. It has been found that :the amorphous structures are formed with cooling rate 3.38 ×1013 K/s 、 3.38 ×1012 K/s ; While, the crystal structures are formed with cooling rate 2.01 ×1011 K/s . These results will have important practical significance to choose cooling rates correctly in order to obtain excellect mocroscopic properties.%采用分子动力学方法对Ga在相同初始状态下以不同速度冷却的凝固过程中进行了模拟研究。发现:以3.38×1013、3.38×1012 K/s的速度冷却,得到非晶态结构;以2.01×1011 K/s的速度冷却,发生明显晶化,结晶转变温度约为133 K。这一结果,对于如何正确选择冷却速度获得优良材料性能,将具有重要的实际意义。
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