EAM analysis of the lattice parameter effect in order-disorder transformation

被引：0
|
作者：
Nsongo, T [1 ]
Ni, XD
Chen, GL
机构：
[1] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China
[2] Fac Sci, Dept Phys, Brazzaville, Rep Congo
[3] Univ Sci & Technol Beijing, Appl Sci Sch, Beijing 100083, Peoples R China
来源：
JOURNAL OF UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING | 2001年 / 8卷 / 03期
关键词：
order-disorder transformation; embedded atom method (EAM); phase transformation; binary alloy;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
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 A(3)B or AB(3) 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 E-2 coefficient, which is related to the ordering energy. These results are in good agreement with experiments.
引用
收藏
页码：189 / 194
页数：6
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