The quantification of criteria for predicting glass formation of binary transition metals by mechanical alloying

A two-dimensional scheme is constructed in order to predict the possibility of amorphization of binary transition-metal systems by mechanical alloying. The two coordinates of the scheme are the size factor (RA-RB)/RA, and the enthalpy of formation of the amorphous phase Delta Hfa, which is calculated from the Miedema model. In this scheme amorphous and nonamorphous regions can be separated by the empirical line Delta R/R=0.068 Delta Hfa+0.716. The investigation is an advance in the quantitative prediction of glass-forming ability using a mechanical alloying technique.