500 series Aluminum alloy (Al-Mg) is known for dimensional instability, i.e. deflects or deforms after certain time duration (for instance, 72 hours) under room temperature. What drives the deformation? dislocation, residual stress, or other reasons? any literature discuss this phenomena?
Shih-Kang Kuo
Thank you Professor Dierk Raabe, for answering my question. It appears the macroscopic deformation of Al-Mg Alloy is due to two reasons. I am wondering which effect dominates this phenomena?
a)Diffusion of the dislocation driven by temperature? or
b)Interactions between the dislocation and the movement of Mg atoms?
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