PT  - JOURNAL ARTICLE
AU  - Králík, Rostislav
AU  - Bajtošová, Lucia
AU  - Kihoulou, Barbora
AU  - Krajňák, Tomáš
AU  - Cieslar, Miroslav
TI  - The Influence of Solidification Route on As-cast Microstructures of Al-Cu-Li-Mg-Zr-Sc Alloy
DP  - 2025 Dec 8
TA  - Manufacturing Technology Journal
PG  - 626--644
VI  - 25
IP  - 5
AID - 10.21062/mft.2025.065
IS  - 12132489
AB  - The influence of the casting method on the microstructures of Al-Cu-Li-Mg-Zr-Sc was examined. The techniques include mold casting, twin-roll casting, and melt spinning. Estimated solidification rates up to 107 K.s-1 produce dendritic solidification with eutectic cells ranging from 500 nm to 50 μm, decorated by primary phase particles with thicknesses from 200 nm to 3 μm. Exceeding this solidification rate results in near-diffusionless solidification, which traps more solutes in the matrix. This type of solidification yields a more supersaturated material with nearly 90% of the total Cu content in the matrix and a fine dispersion of nanoscale spherical precipitates below 100 nm in diameter. The small addition of Sc during casting primarily affects the material at low cooling rates, where primary Sc-containing particles modify the grain boundary shape.