Effect of Thermo-mechanical Treatments on the Hot Workability of Magnesium Alloy AZ31
DescriptionFor designing hot working processes for component manufacture, an understanding of the hot deformation behaviour is essential. It is well known that the response of any material to the applied process conditions is sensitive to its prior history and starting microstructure, which depends on thermo-mechanical treatments such as the homogenization of cast alloy and annealing treatments given before component manufacture. The objective of the present investigation is to study the effect of these thermo-mechanical treatments on the hot deformation behaviour of Mg-3Al-1Zn (AZ31) magnesium alloy. AZ31 alloy has been chosen for this investigation in view of its technological importance among the wrought magnesium alloys. In this alloy, the size and distribution of the intermetallic particles (e.g. Mg17Al12) present in the as-cast microstructure may be varied by homogenization treatment, while annealing influences the grain size and texture. Both these factors have a significant effect on hot workability. This research will directly contribute to the design of a processing route that will ensure the optimization of hot workability and control of microstructure in manufacturing processes such as extrusion, forging, and rolling.
|Effective start/end date||1/04/07 → 21/08/09|