Abstract
The microstructure and mechanical properties of the ZrB2/7085Al composites containing Sc were studied. The ZrB2/7085Al composites were prepared by in situ reaction via Al-Zr-B system. On addition of Sc, it interacted with Zr present in the alloy resulting in the production of Al3(Sc, Zr) precipitates. Minor addition of Sc resulted in grain refinement, change in ZrB2 nanoparticles distribution, change in the size and morphology of the η phase and formation of Al3Sc and Al3(Sc, Zr) precipitates, which improved the strength significantly. The ultimate tensile strength (UTS), yield strength (YS) and elongation of 7085Al-ZrB2-Sc increased to 660.2, 603.4 MPa and 10.6%, respectively. These tensile properties improved 20.4%, 19.2% and 73.7%, respectively, over the 7085Al.
Sign-in/Register to access full text options 
Free) 
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 call
