Study on Microstructure and Mechanical Properties Modification of Cu-Ti3AlC2 Composites by Ni Element

Ti3AlC2 three-layered ceramics-reinforced copper matrix composites show not only the strength of but also better wear resistance, all while preserving its conductive property and, ultimately, reducing cost preparation. However, decomposition in Cu-Ti3AlC2 mainly occurs due to severe interdiffusion Al and Cu elements from particle-grain boundaries, leading formation TiCx. This work explored a practical method produce reinforced with particle which keeps an effective ternary layered structure by adding nickel element. Results that addition Ni results microstructure composed Ti3AlC2, TiCx, NixAl, NixTi, Cu(Ni) Cu-Ni-Ti3AlC2 composites. As volume fraction particles increases, morphologies change finely dispersed reinforcement phase continuous network, reduction hole number compared is especially significant when exceeds 50%. The NixAl NixTi compounds at grain boundary after element alloying restricts diffusion elements. improves mechanical properties