Metal matrix syntactic foams

MMSFs are very promising materials for weight-sensitive applications. A large variety of syntactic foams have been studied in the published literature with magnesium, aluminum, titanium, iron, Invar, zinc, and lead matrices. The synthesis methods are based on solidification processing and powder metallurgy. Deformation and failure mechanisms for syntactic foams have been studied under quasi-static and dynamic loading conditions. Syntactic foam core sandwich structures have also been studied in recent literature. Success in fabricating sandwich structures is an important advancement in making their applications possible because of low tensile and bending strength of syntactic foams. Sandwich configuration eliminates these limitations by providing reinforcement by means of face-sheets.