Goals and Objectives: The goals of this research is to explore the use of high-
intensity ultrasonic vibrations for degassing of molten aluminum, grain refinement
during solidification, and ultrafine grain formation in the solid metals.

Degassing in Molten Aluminum

	Withhout ultrasonic vibration
	With ultrasonic vibration
	Density vs. Vibration Time

 

Grain Refinement During Solidification

	Without ultrasonic vibration
	With ultrasonic vibration
	With ultrasonic vibration and special thermal management

 

Solid State: Ultrasonically Induced Deformation

	SEM image of several plastic deformation in low carbon steel
	TEM image of fine structures in the severe plastically deformed regions

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Research sponsored by the US Department of Energy, Office of Industrial Technologies, Industrial Materials
of the Future Program under contract DE-PS07-01ID14123 with UT-Battelle, LLC.