Title: Powder Metallurgy-Foaming Process of Rolled Precursor for Aluminum Foam Sandwich
Abstract: The precursors for aluminum foam sandwich(AFS) were made by rolling bonding,then they were further worked through powder metallurgy-foaming process to produce AFS.The foaming process was investigated to analyze the AFS microstructure and the different phases,as well as the effects of the foaming agent TiH2 particle size and the agglomeration of those particles on foam formation.The results showed that after foaming the bubble walls are mainly composed of the Al-Si eutectic phase Al3.21Si0.47,Ti and Ti3O,and microcrackes are more likely to take place around the large-size TiH2 particles with the expandable crack width over 100 μm.Furthermore,the sizes of the pores near the cracks are very small.Agglomeration of TiH2 particles during powder mixing and rolling may result in partial excessive driving force for foaming in AFS,thus enabling the large-size pores to form in AFS core after foaming.
Publication Year: 2009
Publication Date: 2009-01-01
Language: en
Type: article
Access and Citation
Cited By Count: 1
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot