Superplasticity of AA2024 aluminium alloy processed by multiple compressions in a channel die was investigated by impression testing in the temperature range of 613-703 K. The values of strain rate sensitivity parameter of 0.49-0.56 and activation...

of uniaxial to equi-biaxial yield stress, strain hardening,

strain rate sensitivity and plastic anisotropy on the shape and level of forming limit curves are studied.

In addition, the capability of the JG model to predict limit strains...

.

For this purpose, strain hardening behavior and strain rate sensitivity of flow

stress of these alloys were measured using tension tests and nano-indentation

tests, respectively. Microstructures of the alloys were studied using electron...