Continuous measurement of m-parameter for Hart analysis of superplastic behaviour of ultra-fine grained AZ31 Mg Alloy
2015
Abstract
The ultra-fine grained materials (UFG) often show superplastic behaviour at elevated temperatures due to small grain size. On the other hand, UFG microstructure is often not stable at increased temperatures and undergoes recovery and recrystallization.
In this paper, we investigate the superplastic properties of UFG AZ31 Mg alloy prepared by equal channel angular pressing.