Microstructural refinement and wear property of Al-Si-Cu composite subjected to extrusion and high-pressure torsion


Gode C., Yilmazer H., Ozdemir I., TODAKA Y.

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, vol.618, pp.377-384, 2014 (SCI-Expanded) identifier identifier

Abstract

The effect of high-pressure torsion (HPT) on the microstructure and the mechanical properties, especially the wear properties, of an Al-Si-Cu alloy (represented by Al-15%Si-2.5%Cu-0.5%Mg) and its composite, which was reinforced by SIC particles (Sic(p)) at a volume fraction of 5%, was investigated systematically in this study. The Al-Si-Cu/SiCp composite is produced in a powder metallurgy process followed by hot extrusion (EXTR) at 565 degrees C. The EXTR specimen is also subjected to HPT processing at an anvil rotation speed of 0.5 rpm under a quasi-hydrostatic pressure of 5 GPa.