Effects of Forging and Rolling Process on Microstructure and Mechanical Properties of Wrought Magnesium Alloy AZ31
Wrought magnesium alloy AZ31 were forged going along wide and high.Change of microstructure and mechanical properties with different forging ratio was studied.The results show that the magnesium alloy AZ31 has more fine homogeneous microstructure with forging ratio increasing;The forged specimen when forging ratio is 1.67 has the maximum hardness,84.4HV.The hardness of the materials decreases when the forging ratio is 1.82,is 78.9 HV;The grain size has a great effect on the dynamic recrystallization grain,with the increasing of grain size,the recrystallization grain size also increasing;the sample with the forging ratio 1.82 by deformation of rolling can obtain good mechanical properties,with average grain size,tensile strength and elongation,3.7μm,281.75MPa,12.7%.