Research Progress of Metal-Intermetallic Laminated Composites

Abstract

Metal-intermetallic laminated composites not only retain the high temperature strength of intermetallics, but also possess the high toughness and ductility of metal at room temperature which are gradually becoming the research priorities of domestic and overseas researchers. In this article, authors introduced Ti-Al, Ni-Al, Fe-Al, Nb-Al and other common metal-intermetallic laminated composites and emphasized on the advantages and disadvantages of synthesis methods, such as hot-pressing, explosive welding, spark plasma sintering and so on. The toughening mechanisms inside and outside of metal-intermetallic laminated composites were summarized. Finally, the deficiencies about the research of metal-intermetallic laminated composites at present were analyzed. The research must focus on the Ti-Al laminated composite. Improving the ductility and toughness at room temperature, researching the toughening mechanism and optimizing the fabrication process are the key issues to the engineering application of metal-intermetallic laminated composites.

Keywords

• metal
• intermetallic
• laminated composite
• preparing method
• toughening mechanism