基于离散格点形式的微扩散方程Langevin方程, 对Al--Li合金在回归过程中相溶解进行了原子层面计算机模拟, 分析了析出相在回归过程中原子图像和序参数的演化, 进而探讨了Al--Li合金的回归机制. 首次探明Al--Li合金的回归过程有序相演化序列, 并论证了亚稳 区合金的回归过程更趋向于失稳区合金时效过程的逆过程;失稳区合金的回归过程更趋向于亚稳区合金时效过程的逆过程.
The dissolution kinetics ordered precipitations in a disordered matrix during retrogression heat treatment was investigated on atomic scale using computer simulations based on microscopic diffusion equations (Langevin equation) with the discrete format. The evolutions of atomic pictures and order parameter profiles with time were analyzed, and the retrogression mechanisms of Al--Li alloys were further studied. In the course of retrogression, it is firstly proved that the evolutions phase in a disordered matrix is in the order; and then the retrogression of alloys at metastable field tends to the anti--process of the phase precipitation of alloys at unstable field, while retrogression of alloys at unstable field tend to the anti--process of the phase precipitation of alloys at metastable field.
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| [1] | |
| [2] | |
| [3] | |
| [4] | |
| [5] | |
| [6] | |
| [7] | |
| [8] |
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