Abstract
Manufacturing of high volume fraction (vf) nano-laminated Ti3AlC2/Ti2AlC ternary carbides product through mechanical milling (MM) of Ti, Al and C consolidated by hot pressing process (HP) was investigated. The microstructures of milled powders and sintered samples were characterized using SEM, TEM and XRD. High energy milling of Ti, Al and C using steel media resulted in the formation of nanocrystalline amorphous-like microstructure of Ti-C phases and Ti/Al/Fe elements. A fully dense product involves high content of Ti3AlC2-Ti2AlC (TAC) metallic ceramics and a small amount of Ti/Al/Fe interlayer was developed through liquid phase sintering (LPS). Mechanisms of anisotropic nano-multilayered morphology microstructure and translaminar fracture phenomena were discussed.
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