Abstract
Abstract The three dimensional microstructural evolution of cast B206 (AlCu5Mg0.3Mn0.3) and AlCu7 (AlCu7Mn0.4) alloys is studied as a function of solution treatment time by synchrotron tomography. Both alloys are formed by an α-Al matrix, Al2Cu and Al7Cu2(FeMn). 3D microstructural parameters of the aluminides such as volume fraction and interconnectivity are presented for the alloys in as-cast condition and after 4 h, 8 h and 16 h of solution treatment at 530 °C. Morphological evolution is obtained from the mean and Gauss curvature distribution. Finally, target metallography is combined with energy dispersive x-ray analysis to identify the phases remaining after 16 h of solution treatment.
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