Fractal and Conventional Analysis of Cu Content Effect on the Microstructure of Al-Si-Cu-Mg Alloys

An Overview of the Interactions Between Reinforcements and Al Matrices with Si, Cu And Mg as Alloying Elements in Aluminum Matrix Composites: Case of Oxide Reinforcements

“…The addition of these alloying elements to Al can lead to the formation of micrometric second phases or nanometric precipitates, which can be respectively obtained from the solidification process, or precipitate from a solid solution due to a heat treatment. Some of them are eutectic Si, β-Mg 2 Si, θ-Al 2 Cu, Al 2 CuMg, and quaternary Q phase (Al 5 Cu 2 Mg 8 Si 6 ) [13][14][15][16][17][18][19] , and in some cases they could be considered reinforcements of the alloys and part of in-situ composites (e.g. Mg 2 Si and Al 2 Cu [20][21][22][23][24] ).…”