TY - SER AU - Jia, Shian AU - Nastac, L. AU - Alilson, Paul G. TI - Microstructure, Mechanical Properties and Fracture Behavior of 6061 Aluminium Alioy Based Nanocomposite Castings Fabricated by Ultrasonic Processing KW - Ultrasonic Stirring Technology KW - Microstructure KW - Mechanical Property ER -