Development of Technology for Preparing Composite Material Based on Aluminum Strengthened with Hollow Ceramic Microspheres

Abstract

The possibility of preparing cast billets of aluminum alloy strengthened by adding hollow aluminosilicate microspheres is investigated. Results of microstructural analysis and a study of strength properties are provided. Experiments are conducted in order to increase molten metal adhesion to the surface of microspheres, both with classical microspheres, and with microspheres with surface modified by with a coating containing chromium and chromium carbide. The effect of adhesion on mechanical properties is demonstrated.