Internal Friction Analysis of Transformations in AuCuAl Alloy

Author

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

Abstract

The phase transformation in the as-quenched and aged Au₇Cu₅Al₄ alloys were investigated by internal friction technique. The results show that Ms temperatures of the as-quenched and aged Au₇Cu₅Al₄ alloys are -2.7°C and 13.8°C, respectively. The boundary relaxation activation energy for the quenched and aged Au₇Cu₅Al₄ alloys were calculated for 131.5 kJ/mol and 93.0 kJ/mol, respectively, which indicates the difference of ordering states of the parent phases resulted by different thermal history. By high temperature internal friction measurement it is found that the B2 →L2₁ ordering transition is interrupted by quenching and the parent phase state of quenched Au₇Cu₅Al₄ alloy shows B2 ordering, which suppresses martensitic transformation.

Recommended Citation

M. J. Jin et al., "Internal Friction Analysis of Transformations in AuCuAl Alloy," Shanghai Jiaotong Daxue Xuebao/Journal of Shanghai Jiaotong University, vol. 44, no. 5, pp. 609 - 612, Shanghai Jiaotong University, May 2010.

Department(s)

Materials Science and Engineering

Keywords and Phrases

Au-Cu-Al alloy; Internal friction; Martensitic transformation; Ordering transition

International Standard Serial Number (ISSN)

1006-2467

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

Chinese

Rights

© 2010 Shanghai Jiaotong University, All rights reserved.

Publication Date

01 May 2010