|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Multiscale Architectured Materials (MAM II): Tailoring Mechanical Incompatibility for Superior Properties
||Effect of Initial Oxide Layer on the Growth and Morphology of Intermetallic Layer in Fe-based MIL Composites
||Yu Wang, Kenneth S Vecchio
|On-Site Speaker (Planned)
Metal-intermetallic laminate composites can be designed for structural use to optimize the unique properties and benefits of the components, resulting in materials, which have the high strength and stiffness of the intermetallic with the high toughness of the metal. For fabricating the MIL composites, two kinds of metal foils are hot pressed with alternating layers in the open air and react around their lowest eutectic temperature until one of the foils has been consumed to form intermetallic phases. Initial oxide layer present at the surface of the metal foil strongly influences the nucleation and inter-diffusion process during the growth of the intermetallic, which will affect the microstructure and final properties of the MIL composites. This paper will focus on lower cost Fe-based MIL composites by examining the oxide layer effects on the initial nucleation stage, growth kinetics and the final morphology of the intermetallic phases formed in the Al/Fe reaction.