On the plasticity of Al–Cu–Fe quasicrystals

✍ Scribed by M. Texier; A. Proult; J. Bonneville

• Book ID: 103839720
• Publisher: Elsevier Science
• Year: 2005
• Tongue: English
• Weight: 133 KB
• Volume: 400-401
• Category: Article
• ISSN: 0921-5093
• DOI: 10.1016/j.msea.2005.02.089

✦ Synopsis

A technique of repeated load relaxation tests (RLRT) has been used to evaluate microstructural evolutions and activation volumes of Al-Cu-Fe quasicrystals deformed in compression tests performed at constant strain-rate. The post-relaxation behaviour after reloading at constant strain-rate and the evolution of correction terms, measured by RLRT in order to account for microstructural evolution, confirm that Al-Cu-Fe plasticity is controlled by a strain-dependent thermally activated mechanism. Activation volumes measured in the hardening and softening stages of the yield point reveal that the same mechanism controls plastic deformation.