The synergistic action achieved by combining induction heating situated and a high DC magnetic field results in a configuration such that a high intensity ultrasonic signal is generated in the sample. The upshot is a non-contact electromagnetic acoustical transducer (EMAT) that dramatically impacts nucleation and growth by fundamentally altering solid/liquid interfaces. Several metal, intermetallic and ceramic systems are under investigation. Solidification and microstructural evolution of an abridged list of these materials that includes light weight materials and cast irons will be discussed. Solidification experiments were conducted at ORNL and at the NHMFL using a custom sample environment and instrumentation. Materials were induction melted by conventional means and then solidified under EMAT near 10 kHz driven by magnetic fields of up to 20 Tesla under a controlled atmosphere in several crucible configurations. A comparison to the conventionally solidified material reveals that the high intensity acoustic frequency EMAT promotes a finer scale microstructure, wrought like properties from cast materials and unique morphological features. Finally, EMAT is shown to be an efficient method of dispersing nano materials in castings. Research sponsored by the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Industrial Technologies Program, under contract DE-AC05-00OR22725 with UT-Battelle, LLC.