Abstract
This study used a solution blending method to coat Ti64 alloy particles with an organopolysilazane (OPSZ) precursor, creating (TiC + Ti3Si)/Ti64 composites via spark plasma sintering (SPS). During SPS, OPSZ decomposes, releasing silicon, carbon, and nitrogen. Nitrogen exits as NH3 and N2, while carbon and silicon partially dissolve in the matrix and partially react with titanium to form TiC and Ti3Si particles. The composite with 0.5 wt% OPSZ exhibited a tensile strength of 1135 MPa and an elongation of 19.0 %, 18.2 % and 28.5 % higher than commercial Ti64 alloy, respectively. The strength increase is attributed to grain refinement, solid solution strengthening, Orowan strengthening, and L phase strengthening. The improved ductility results from fine precipitates promoting dislocation multiplication, the dislocation storage effect of the interface L-phase, and matrix purification by H2 and NH3 from OPSZ decomposition.
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.
