Grain Structure Formation Ahead of Tool during Friction Stir Welding of AZ31 Magnesium Alloy
The “stop-action” technique was employed to study grain structure evolution during friction-stir welding of AZ31 magnesium alloy. The grain structure formation was found to be mainly governed by the combination of the continuous and discontinuous recrystallization but also involved geometric effect of strain and local grain boundary migration. Orientation measurements showed that the deformation mode was very close to the simple shear associated with the rotating pin and material flow arose mainly from basal slip.
H. Klein and R.A. Schwarzer
U. Suhuddin et al., "Grain Structure Formation Ahead of Tool during Friction Stir Welding of AZ31 Magnesium Alloy ", Solid State Phenomena, Vol. 160, pp. 313-318, 2010