Ductility and solidification issues in Al-Si-Cu-Mg alloys

Abstract

See, stats, and : http : / / www . researchgate . net / publication / 275275682 Ductility -Si-Cu-Mg THESIS DOI : 10 . 14264 / uql . 2015 . 91 DOWNLOADS 31 VIEWS 25 1 : Dr Ecole ' Arts 10 SEE Available : Dr Retrieved : 07 Abstract Earlier research carried out on the ductility of Al - Si - Cu - Mg alloys have showed that the ductility of Al - Si - Cu - Mg alloys with high levels of Fe (0 . 5 wt . %) and Cu (4 . 0 wt . %) is increased at high (7~9%) concentrations of Si . Quantitative metallographic analysis performed on these alloys suggested that the refinement of both Fe - rich  - Al 5 FeSi and Cu - rich  - Al 2 Cu intermetallics , arose from the shorter solidification path accounting for the increased ductility . More recent studies on the effect of Si concentration on the size and shape of iron - rich (Al 5 FeSi) intermetallic phase of ternary Al - Si - 0 . 8Fe alloys showed that the size of  - Al 5 FeSi plates increased with increasing silicon content . It was then proposed that the presence of Cu was adamant to the refining effect of Si , presumably through the introduction of low melting point pools of Cu - Al eutectic . It was proposed that Fe remained