| Abstract: | It has been confirmed that glass-forming ability (GFA) ofsupercooled liquids is related to not only liquid phase stabilitybut also the crystallization resistance. In this paper, it is foundthat the liquid region interval ($T_{rm l}-T_{rm g})$characterized by the normalized parameter of $T_{rm g}$/$T_{rm l}$could reflect the stability of glass-forming liquids at theequilibrium state, whilst the normalization of supercooled liquidregion $Delta T_{rm x}$=($T_{rm x}-T_{rm g})$, i.e. $DeltaT_{rm x}$/$T_{rm x}$ (wherein $T_{rm l}$ is the liquidustemperature, $T_{rm g}$ the glass transition temperature, and$T_{rm x}$ the onset crystallization temperature) could indicatethe crystallization resistance during glass formation. Thus, a newparameter, defined as $xi =T_{rm g}$/$T_{rm l}+Delta T_{rmx}$/$T_{rm x}$ is established to predict the GFA of supercooledliquids. In comparison with other commonly used criteria, thisparameter demonstrates a better statistical correlation with the GFAfor various glass-forming systems including metallic glasses, oxideglasses and cryoprotectants. |
