EXPERIMENTAL STUDIES AND CONSTITUTIVE MODELING FOR CREEP AGING OF 2124 Al ALLOY

doi:10.3724/SP.J.1037.2012.00642

Acta Metall Sin

2013, Vol. 49

Issue (3): 379-384 DOI: 10.3724/SP.J.1037.2012.00642

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EXPERIMENTAL STUDIES AND CONSTITUTIVE MODELING FOR CREEP AGING OF 2124 Al ALLOY

ZHANG Jin¹, DENG Yunlai^1,2, YANG Jinlong¹, ZHANG Xinming^1,2

1) School of Materials Science and Engineering, Central South University, Changsha 410083
2) The Key Laboratory of Nonferrous Materials Science and Engineering of Ministry of Education, Central South,University, Changsha 410083

Cite this article:

ZHANG Jin, DENG Yunlai, YANG Jinlong, ZHANG Xinming. EXPERIMENTAL STUDIES AND CONSTITUTIVE MODELING FOR CREEP AGING OF 2124 Al ALLOY. Acta Metall Sin, 2013, 49(3): 379-384.

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Abstract

A series of creep ageing tests under different temperatures and stresses have been designed to characterize the creep aging behavior of 2124 Al alloy, and the microstructure and properties of the samples in the interrupted tests have been observed. On the basis of the experimental results, combining the creep mechanism and age strengthening theory, a unified constitutive model has been developed for creep age forming of 2124 Al alloy. The constitutive relations, aging strengthening effect and the microstructure are closely correlated in the model, which could be suitable for different ageing temperatures and stress levels. Finally, the model hasbeen used to predict the creep strain curves of added creep aging tests with different temperature, the computed results tally well with the experimental data.

Received: 27 October 2012

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https://www.ams.org.cn/EN/10.3724/SP.J.1037.2012.00642 OR https://www.ams.org.cn/EN/Y2013/V49/I3/379

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