Elasto-Plastic Mechanical Properties and Failure Mechanism of Innovative Ti-(SiC f/Al₃Ti) Laminated Composites for Sphere-Plane Contact at the Early Stage of Penetration Process

摘要: A novel silicon carbide (SiC) continuous ceramic fiber-reinforced (CCFR) Ti/Al₃Ti Metal-Intermetallic-Laminate (MIL) composite was fabricated. high-efficiency semi-analytical model proposed based on the numerical equivalent inclusion method (NEIM) for analyzing small-strain elasto-plastic contact in early stage of penetration process. The microstructure and interface features were characterized by scanning electron microscopy (SEM). Quasi-static compression tests performed to determine response validate model. group in-depth parametric studies carried out quantify influence microstructure. comparison between results under sphere-plane plane-plane load indicates that, first sphere-plane, compressive strength failure strain are both lower SiC reinforcement effect is very clear while ductility not clear. maximum plastic concentration (MPSC) Al₃Ti layer closest upper boundary central fiber then extends along depth direction as increases, which also locations where cracks may initiate extend. Moreover, CCFR-MIL shows better mechanical properties when center distance adjacent fibers four times diameter volume fraction Ti 40%.