Abstract
An in-situ dual morphology carbide and boride reinforced Ti-47.7Al-7.1Nb-2.3 V-1.1Cr (at%) alloys were fabricated with nano-B4C addition by spark plasma sintering (SPS), and the effect on the microstructure and tensile property of high Nb-TiAl alloys were studied. Compared with Ti-47.7Al-7.1Nb-(V, Cr) matrix, the lamellar colony size has been significantly refined from 126 ± 45 μm to 45 ± 15 μm and the ultimate tensile strength (UTS) improved 105 MPa with 0.2 at% nano-B4C addition. Multiple strengthening induced by the Ti2AlC micron/nanoparticles and TiB2 nanoparticles is the reason for the improvement of the tensile property.
Full Text 
Sign-in/Register to access full text options
Sign-in/Register to access full text options 
Published version (
Free)
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
