Characterization of Ordering Transitions in Au-Cu-Al Alloys

Author

M. J. Jin
Yijia Gu, Missouri University of Science and TechnologyFollow
X. Jin

Abstract

A2 → B2 → L2₁ ordering transitions in Au-Cu-Al alloy were investigated by a combination of thermal analysis, electrical resistivity and internal friction technique. Results show that A2-B2 ordering transition was accompanied by volume change and thermal effects, features of the first-order transformation. While B2-L2₁ ordering transition belongs to the second-order transition, since only the change of C_p (heat capacity) was observed. Critical temperatures of A2-B2 and B2-L2₁ ordering transitions were appropriately determined by internal friction measurement. Comparison among different techniques was presented, and the applicability of these techniques was suggested. The mechanics of ordering transition in Au₇Cu₅Al₄ alloy was also discussed.

Recommended Citation

M. J. Jin et al., "Characterization of Ordering Transitions in Au-Cu-Al Alloys," Materials Characterization, vol. 60, no. 11, pp. 1395 - 1399, Elsevier Inc., Nov 2009.

The definitive version is available at https://doi.org/10.1016/j.matchar.2009.06.013

Department(s)

Materials Science and Engineering

Comments

This work was carried out with the financial support of Lao Fengxiang Co. Ltd.

Keywords and Phrases

Electrical resistivity; Internal friction; Ordering transition; Thermal analysis

International Standard Serial Number (ISSN)

1044-5803

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2009 Elsevier Inc., All rights reserved.

Publication Date

01 Nov 2009