• • MDTM technology enables high-density TiB2 nucleation at medium disperser rotation speeds (100–150 r/min), yielding refined particles, whereas low speeds (0–50 r/min) cause coarse particles and high speeds (150–200 r/min) induce coarsening due to weakened nucleation driving force.
• • A quantitative model linking TiB2 particle size to disperser rotation speed and reactant solute concentration was established, enabling predictive control of particle refinement.
• • The synergy of melt dispersion (reducing initial droplet size) and turbulent mixing (enhancing solute convection) is critical for achieving high-density nucleation and uniform distribution of TiB2 particles.
• • The optimized MDTM process offers a scalable, controllable route for fabricating high-performance Cu-TiB2 composites with improved electrical conductivity and mechanical properties, addressing limitations of conventional liquid-phase in-situ methods.