A2 → B2 → L2₁ Ordering Transitions in Au-Cu-Al Alloys
Abstract
The critical transition temperatures of A2 → B2 ordering and B2 → L21 ordering in Au-Cu-Al alloys were determined by electrical resistivity measurement and internal friction analysis. The Bragg-Williams-Gorski (BWG) approximation has been widely used for years as a simple mean field method to characterize order-disorder phenomena in alloys. In this article a modified BWG model was employed to analyze the chemical ordering sequence in Au-Cu-Al alloys. Based on the measured critical transition temperatures of A2 → B2 ordering, the critical temperatures of B2 → L21 ordering were calculated. The theoretical predictions were in agreement with the measured temperatures.
Recommended Citation
Y. Gu et al., "A2 → B2 → L2₁ Ordering Transitions in Au-Cu-Al Alloys," Intermetallics, vol. 17, no. 9, pp. 704 - 707, Elsevier Inc., Sep 2009.
The definitive version is available at https://doi.org/10.1016/j.intermet.2009.02.012
Department(s)
Materials Science and Engineering
Keywords and Phrases
A. Ternary alloy systems; B. Order/disorder transformations; E. Ordering energies; E. Phase diagram, prediction
International Standard Serial Number (ISSN)
0966-9795
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2009 Elsevier Inc., All rights reserved.
Publication Date
01 Sep 2009
Comments
This work was carried out with the financial support of Lao Fengxiang Co. Ltd. and the National Natural Science Foundation of China under Grant No. 50571064.