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Simulation of clusters formation in Al-Cu based and Al-Zn based alloys

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Abstract

A Monte Carlo computer simulation is adopted to investigate the role of micro-alloying elements Mg and Ag in Al-Cu and Al-Zn alloys. Small amount additions of Mg to the Al-Cu alloy markedly retard the formation of Cu clusters due to the preferential trapping of free-vacancies available for Cu diffusion. On the other hand, additions of Mg to the Al-Zn alloy promote the formation of Zn clusters due to the preferential Mg-Zn interaction. As for the effect of Ag, it is found that, in both Al-Cu-Mg and Al-Zn-Mg alloys, Ag atoms are preferentially bounded to Mg-Cu-vacancy or Mg-Zn-vacancy complexes. However, in Al-Cu-Mg alloy Ag atoms interact with Mg, while in Al-Zn-Mg alloy they interact with both Mg and Zn.

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Authors and Affiliations

  1. Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou Fujian, 350002, Peoples’s Republic of China

    Daqin Chen & Yuansheng Wang

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  1. Daqin Chen
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  2. Yuansheng Wang
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Correspondence to Yuansheng Wang.

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Chen, D., Wang, Y. Simulation of clusters formation in Al-Cu based and Al-Zn based alloys. J Mater Sci 40, 3461–3466 (2005). https://doi.org/10.1007/s10853-005-2850-6

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  • DOI: https://doi.org/10.1007/s10853-005-2850-6

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