Molecular Dynamics Simulation of Glass Forming Ability of Al30Co10 Amorphous Alloy

By using LAMMPS of the open source software, the micro-structures of Al30Co10 alloys were studied. Based on the average atomic volume, pair distribution function and bond-angle distribution functions, Honeycutt-Andersen (HA) bond-type index analysis shows that Al30Co10 alloy system begins to transform into a glass state with the temperature rapidly decreasing to 900 K. The process temperature is decreased from 900 K to 300 K, the radial distribution function g(r) the first peak height with increased, width as decreasing temperature, and the system is an amorphous alloy when second peak appears obvious splitting. The bond angle distribution function showed second peaks when the temperature dropped to 300 K, so that the alloy atoms become orderly. Meanwhile the 1551 bond pairs increase to 35% with decreasing temperature; it implies that the Al30Co10 alloy system can be well transformed into the glass state.

来源: Molecular Dynamics Simulation of Glass Forming Ability of Al30Co10 Amorphous Alloy

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