Abstract: A system and a method for fabrication of bulk nanocrystal alloys is provided. The method may include subjecting powders of at least one material to an ultrasonic vibration at a first amplitude. The method may also include heating the powders in response to the ultrasonic vibration at a first temperature elevating rate corresponding to the first amplitude, and treating the powders in a temperature range corresponding to the first temperature elevating rate. The method may further include obtaining a bulk material composed of a plurality of crystal grains, the plurality of crystal grains having an average linear dimension equal to or larger than 10 nm. The method may further include obtaining a bulk material with amorphous structure with sufficient temperature cooling rate.