Wear Performance and Corrosion Behavior of Nano-SiCp-Reinforced AlSi7Mg Composite Prepared by Selective Laser Melting

It is one of the future trends to create materials in situ by laser additive manufacturing. AlSi7Mg/nano-SiCp composites were successfully prepared selective melting our previous study. After adding 2 wt% nano-SiC particles, tensile stress and strain increased 502.94 ± 6.40 MPa 10.64 1.06%, respectively. For first time present study, we systematically studied compared wear performance corrosion behavior AlSi7Mg with its composite. We conducted ball-on-flat frictional test at room temperature, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), immersion tests 3.5 NaCl solution. The results showed that composite had higher resistance, while was more resistant pitting corrosion. However, further restrained because phase nano-Al4C3 residual nano-SiCp.