The technologies and mechanism of forming the foam metals and its use on aircrafts II

The technologies and mechanism of producing and forming the foam products of different metals and alloys, including contemporary technologies with the methods of foundry and powder metallurgy and also by straight blowing up gaseous matters in a melt are described. The characteristics of some foam metals and its advantages to compact materials and also its use at the aerospace and other branches of industry are given. Foam metals and alloys can be manufactured by two main methods: casting and powder metallurgy. Metallic foams applications are increasing on those fields such as automotive or aerospace industries due to the weight reduction. Several routes are used to achieve metallic foams: deposition, melting and powder metallurgy. On some of these processes, foam manufacturing involves a gas into a melted metal which leads to a light metallic structure. In recent years, some research has been developed on the deformation behavior of metal foams.