The microstructural morphology of the melt-quenched high-temperature Ti-55 alloy consists of a uniform distribution of bands of ultrafine Nd-rich phase particles. The calculated diameter of the particles is 6.648 nm, which is within the 6-15 nm range observed experimentally. The matrix first solidifies and engulfs the Nd-rich liquid droplets, and then the liquid droplets crystallize. Finally, bands of ultrafine particles are formed parallel to the advancing solidification plane-front.
展开▼
