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

页码：189 / 194

页数：6

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