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1767423 
Journal Article 
Thermo-mechanical characterisation of AA 6056-T4 and estimation of its material properties using Genetic Algorithm 
Zain-Ul-abdein, M; Nelias, D; Jullien, JF; Wagan, AI 
2010 
1 
Materials & Design
ISSN: 0264-1275
EISSN: 1873-4197 
31 
9 
4302-4311 
WOS:000279518900033 
This paper presents an experimental investigation of
thermo-mechanical material properties of AA 6056-T4, which is used extensively in aeronautic
applications. Monotonic tensile tests have been carried out on the dog-bone type specimens at
temperatures ranging from room temperature (16 degrees C) to high temperature (450 degrees C)
with two different strain rates; viz, high strain rate (similar to 0.002 s(-1)) and low strain
rate (similar to 0.0002 s(-1)). Specimens were heated with the help of Joule heating system using
Gleeble (R) 3500 machine at a temperature rate of 25 degrees C/s. Material properties which were
investigated include the Young's modulus, yield strength at 0.1% plastic strain and hardening
modulus. Estimation of material properties using Genetic Algorithm is introduced in the second
part of the paper. This approach is incorporated to suggest the model for material properties in
terms of temperature and strain rate. The suitability of the proposed model is evaluated using
experimental data. Having established a reasonable comparison with experimental results, the
material properties are predicted with consistent strain rate values. (C) 2010 Elsevier Ltd. All
rights reserved. 
AA 6056-T4; Thermo-mechanical properties; Tensile test