Estimation of glass forming ability of Mg-based alloys based on thermodynamics

The solidification procedures of Mg-based amorphous alloys were simulated on the basis of thermodynamics. The critical cooling rates Rcs for the formation of Mg-based amorphous alloys are obtained. Although the estimated Rc is larger than the tested one, the change tendency of the estimated and tested Rcs is coherent with each other. Thus the thermal and physical parameters difficultly measured by the experiment can be quickly calculated and are reliable for the simulation of the solidification of the alloys. The glass forming ability GFA of the alloys can be quickly estimated by using numerical simulations. The reasons for the difference between two Rcs are also discussed.