Uniform Dispersion of Nanoparticles in Metal Matrix Nanocomposites

摘要

The dispersion of nanoparticles in metal matrices is crucial for the performance of the metal matrix nanocomposites (MMNCs). Uniformly dispersing nanoparticles into the metal matrix is still a great challenge. This paper demonstrates that a uniform dispersion of Al_2O_3 nanoparticles in an A206 alloy matrix is achieved by a combination of liquid state ultrasonic processing and solid state friction stir processing. The results obtained in this work provide a general methodology to uniformly disperse nanoparticles into metal matrix nanocomposites, paving the way for development of metal matrix nanocomposites with superior properties.