Abstract
Abstract In this work, intermetallic-free aluminium matrix composites reinforced with TiC and Al2O3 ceramic particles were successfully prepared via an in situ reaction of Al-Ti-C-CuO-La2O3 during self-propagating high-temperature synthesis. The effect of adding the rare earth metal oxide La2O3 was studied by using differential scanning calorimetry, X-ray diffraction, scanning electron microscopy, optical microscopy and Brinell hardness tests. The results showed that La2O3 could promote the wettability of the C and Al melt in the Al-Ti-C-CuO system. The final products of the in situ reaction for the 2.5Al-1Ti-1.2C-0.5CuO-0.005La2O3 system were TiC particles and Al2O3 particles, and the system was free of intermetallic compounds. The prepared aluminium matrix composites were greatly refined with an average grain size of 20.6 μm. The intermetallic-free aluminium matrix composites reinforced with TiC and Al2O3 particles showed up to two times higher Brinell hardness value than the matrix 6063 aluminium alloy.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
