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通过计算机模拟对铝锂合金时效过程中的有序化和原子簇聚进行了研究。长程序参数和成分偏离序参数通过锂原子格点占位几率计算得出。结果表明:随合金成分由相图上的亚稳区向失稳区转变,有序化与原子簇聚过程相比逐渐加快,而相变孕育期逐渐缩短。
The ordering and atomic clustering of Al-Li alloy during aging were studied by computer simulation. The parameters of long program and the deviant parameters of the composition are calculated by occupying the chance of lithium atom grid. The results show that as the alloy composition changes from the metastable region to the destabilized region on the phase diagram, the ordering becomes faster than that of the atomic clustering, and the phase transitional incubation period gradually shortens.