A2 → B2 → L2₁ Ordering Transitions in Au-Cu-Al Alloys
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.
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
Mechanical and Aerospace Engineering
Keywords and Phrases
A. Ternary alloy systems; B. Order/disorder transformations; E. Ordering energies; E. Phase diagram, prediction
International Standard Serial Number (ISSN)
Article - Journal
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