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Use of thermodynamic calculation to predict the effect of Si on the ageing behavior of Al–Mg–Si–Cu alloys

✍ Scribed by Yanli Ji; Hao Zhong; Ping Hu; Fuan Guo

Publisher
Elsevier Science
Year
2011
Weight
819 KB
Volume
32
Category
Article
ISSN
0261-3069

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✦ Synopsis

Thermodynamic calculation was employed to predict the influence of Si content on the ageing behavior of Al-Mg-Si-Cu alloys. In addition, experiments were carried out to verify the predictions. The results show that thermodynamic calculation can predict the effect of Si content on the ageing behavior of the studied alloys. This study further proposes that the hardness level of alloys during ageing is directly related to the Si content in the as-quenched supersaturated solution, while the precipitation strengthening effect is directly related to the Mg 2 Si level of the alloys.

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