Slow Crystallization of Al-Sc Alloys: Growth of Spherical Intermetallic Particles

A.B. Shubin; E. A. Popova; K. Y. Shunyaev; E.A. Pastukhov

doi:10.4028/www.scientific.net/DDF.326-328.75

Paper Titles

Characterization of a Hygro-Regulated Wall Base Ventilation System for Treatment of Rising Damp
p.54

Influence of Thermal Treatment on the Heat Transfer of 10GN2MFA Steel
p.60

Exploitation of Artificial Intelligence Methods for Prediction of Atmospheric Corrosion
p.65

The Influence of Carbon Fillers on Thermal Transport in Polyurethane
p.69

Slow Crystallization of Al-Sc Alloys: Growth of Spherical Intermetallic Particles
p.75

Novel Arrangement of Rough Tubes for Heat Flux Improvement
p.81

Estimation of Li-Ion Diffusion Coefficients in C₆₀ Coated Si Thin Film Anodes Using Electrochemical Techniques
p.87

Synthesis and Characterization of the Gold-SiO₂ Core-Shell Nanoparticle on the X-Nanozeoliate Used for Immobilization of the Alkaline Protease Enzyme
p.93

The Kinetic Monte Carlo Simulations of the Self-Diffusivity in Zeolites
p.99

HomeDefect and Diffusion ForumDefect and Diffusion Forum Vols. 326-328Slow Crystallization of Al-Sc Alloys: Growth of...

Slow Crystallization of Al-Sc Alloys: Growth of Spherical Intermetallic Particles

Abstract:

The solidification of binary Al-Sc melts containing small amounts of scandium (< 2 wt.%) have been investigated. We studied concentration profiles in long Al-Sc as cast ingots formed by slow cooling of the liquid alloys. It was found that minor addition of transition metals like Ti can lead to the formation of large (about 10-20 μm) spherical intermetallic particles (Al₃Sc containing some amount of isomorphic Ti). These sphere-like particles are forming during the crystallization of liquid solution of Sc in Al (before the precipitation on nanosize spherical particles from the solid solutions). The results of SEM and EDX investigations of these alloys are also presented in this paper.