Study on Compression Behaviour of AZ31 Magnesium Alloy at Room-Temperature
The microstructure, surface morphology, compression properties, deformation behaviour and strain hardening exponent of as-cast and as-extruded AZ31 Mg alloy after different annealing treatments were investigated. The results show that the compression properties are great different between cast AZ31 alloy and extruded AZ31 alloy. Extruded AZ31 alloy is discontinuous yield and on the surface no signs of damage have been observed; on the contrast, cast AZ31 alloy is continuous yield and shows wavy patterns, and the surface cracks can be easily found. In addition, there is a linear relationship between the strain hardening exponent in first deformation stage and the yield ratio. Further more, the twinning mechanism plays very different role in cast AZ31 alloy and extruded AZ31 alloy.
Wenzhe Chen, Qiang Li, Yonglu Chen, Pinqiang Dai and Zhengyi Jiang
J. L. Sun et al., "Study on Compression Behaviour of AZ31 Magnesium Alloy at Room-Temperature", Advanced Materials Research, Vols. 476-478, pp. 1960-1964, 2012