The sequence of precipitation in the Al-Mg-Si-Cu alloy AA6111 |
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| Authors: | Xiang Wang Shahrzad Esmaeili David J Lloyd |
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| Affiliation: | (1) the Department of Materials Science and Engineering, McMaster University, L8S 4L7 Hamilton, ON, Canada;(2) the Department of Mechanical Engineering, University of Waterloo, N2L 3G1 Waterloo, ON, Canada;(3) Present address: Novelis Global Technology Centre, K7L 5L9 Kingston, ON, Canada |
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| Abstract: | The preciptation behavior of the aluminum alloy AA6111 in the advanced stages of aging has been studied using differential
scanning calorimetry (DSC), transmission electron microscopy (TEM), and high-resolution TEM (HRTEM). The results have demonstrated
the formation of various precipitate types and morphologies of quaternaryQ phase andβ (Mg2Si) families at the peak-aged condition and during overaging at different temperatures. The work has clarified the sequence
ofQ phase formation and showed evidence for a new morphology of this phase. The sequence of precipitation in AA6111 is elaborated
in light of the new findings. |
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