Research on preparation of aluminum foam sandwich and steel plate/foam core interfacial microstructure

Metal skin-Al-foam core sandwich panels have unique characteristics such as light weight,high stiffness and well damping properties.There are lots of manufacture methods,but all these methods are to prepare core material first and then join them to skins.Iron/aluminum foam/iron sandwiches were prepared by metal powder and face plate rolling method in this study.Asymmetric foaming problem of aluminum foam core was investigated,metallurgy combination process between face plate and aluminum foam core before and after foaming was analyzed.And diffusion combination mechanism was established.By diffusion reaction a good metallic combination in skin-foam core interface was formed.