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This work presents the characterization of Al-6Si-3Cu-xMg (x = 7, 9 and 11 wt%) foams obtained through the in-situ process. Heat treatments which consisted on over-heating the alloys during 6 h at 520, 560 and 600 °C were performed. The microstructural changes, the quantification and measurement of sizes and shapes of second phases and pores were carried out by means of Optical Microscopy (OM), X-Ray...
The present study shows a new manufacturing process of foams of Al alloys by the modification of the conventional solution heat treatment of three alloys Al-6Si-3Cu-xMg (x=7, 9 and 11wt%). Over-heating the alloys during 6h at 520, 560 and 600°C allowed to obtain foams with maxima porosities of 40% and pore sizes from 20 to 150µm, originated due to the localized melting of second phases. The characteristics...
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