Precipitation during homogenization cooling in AlMgSi alloys |
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Authors: | Yucel BIROL |
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Affiliation: | Materials Institute, Marmara Research Centre, TUBITAK, Kocaeli 41470, Turkey |
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Abstract: | Precipitation during the industrial cool down takes place predominantly above 300 °C in the EN AW-6082 and 6005 alloys. The phase precipitation throughout cooling is equilibrium β phase. A considerable capacity is retained after the cool down for further precipitation during a subsequent heating cycle. The β-Mg2Si is once again the predominant phase that forms during a scan heating cycle employed in exactly the same manner with the industrial billet preheating operation. The precipitation in the 6060 alloy, on the other hand, occurs predominantly below 300 °C with additionally β′-Mg2Si particles formed below 200 °C. |
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Keywords: | aluminium alloys extrusion precipitation homogenization |
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