Timothée Nsongo, Xiaodong Ni, and Guoliang Chen, EAM Analysis of the Lattice Parameter Effect in Order-Disorder Transformation, J. Univ. Sci. Technol. Beijing, 8(2001), No. 3, pp. 189-194.
Cite this article as:
Timothée Nsongo, Xiaodong Ni, and Guoliang Chen, EAM Analysis of the Lattice Parameter Effect in Order-Disorder Transformation, J. Univ. Sci. Technol. Beijing, 8(2001), No. 3, pp. 189-194.
Timothée Nsongo, Xiaodong Ni, and Guoliang Chen, EAM Analysis of the Lattice Parameter Effect in Order-Disorder Transformation, J. Univ. Sci. Technol. Beijing, 8(2001), No. 3, pp. 189-194.
Citation:
Timothée Nsongo, Xiaodong Ni, and Guoliang Chen, EAM Analysis of the Lattice Parameter Effect in Order-Disorder Transformation, J. Univ. Sci. Technol. Beijing, 8(2001), No. 3, pp. 189-194.
State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China
Faculty of Science, Physics Department, P. O. Box 69, Brazzaville (CONGO)
Applied Science School, University of Science and Technology Beijing, Beijing 100083, China
中文摘要
The embedded atom method (EAM) was used to theoretically analyze the effect of the lattice parameter variation on the order-disorder transformation in binary alloys. Based on EAM, it is found that only one kind of order-disorder transition (second-order transition) exists for AB alloy. Three groups of order-disorder transformation can be observed for the A3B or AB3 compounds. For group I, the order-disorder is a completely first-order transition. For group II, the order-disorder transformation is a classical first-order transition. For group III, the order-disorder transformation is found to be a second-order transition. The lattice parameter variations have a significant effect on E2 coefficient, which is related to the ordering energy. These results are in good agreement with experiments.
The embedded atom method (EAM) was used to theoretically analyze the effect of the lattice parameter variation on the order-disorder transformation in binary alloys. Based on EAM, it is found that only one kind of order-disorder transition (second-order transition) exists for AB alloy. Three groups of order-disorder transformation can be observed for the A3B or AB3 compounds. For group I, the order-disorder is a completely first-order transition. For group II, the order-disorder transformation is a classical first-order transition. For group III, the order-disorder transformation is found to be a second-order transition. The lattice parameter variations have a significant effect on E2 coefficient, which is related to the ordering energy. These results are in good agreement with experiments.
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