Influence of the Strain Rates on Tensile Properties and Fracture Interfaces for Mg-Al Alloys Containing Y

The tensile properties at strain rates of 0.001/s, 0.1/s and 0.6/s for Mg-3Al1-Zn-2Y, Mg-3Al-2Zn-2Y and Mg-3Al-6Zn-2Y were researched, which showed great difference on the mechanical sensitivity to strain rate. The fractal behavior of the alloys’fracture interface is remarkable. The brittleness, plasticity and the appearance of fracture interface can be related through the fractal dimension D.