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The effect of heat treatment on Mg2Si coarsening in aluminum 6105 alloy

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Abstract

The coarsening behavior of Mg2Si intermetallic particles was studied during homogenization of aluminum 6105 alloy. An industrially homogenized 6105 aluminum alloy contained large globular undissolved Mg2Si. With subsequent heat treatment at 590 °C over 1 week, it was found that the large Mg2Si precipitates coarsened with time. The coarsening of the large Mg2Si precipitates was quantified by statistical analysis of micrographs. A linear relationship between \(\bar R^{3.8} - \bar R_i^{3.8} \) and time fits the experimental measurements quite well, indicating that the coarsening is diffusion controlled, with grain-boundary diffusion dominating volume diffusion.

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Authors and Affiliations

  1. the Materials Science and Engineering Department, Gebze Institute of Technology, P.K. 141, Gebze-Kocaeli, Turkey

    M. Usta (Assistant Professor)

  2. the Department of Materials Science and Engineering, Rensselaer Polytechnic Institute, 12180-3590, Troy, NY

    M. E. Glicksman (John Tod Horton Professor of Materials Engineering) & R. N. Wright (Professor)

Authors
  1. M. Usta
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  2. M. E. Glicksman
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  3. R. N. Wright
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Usta, M., Glicksman, M.E. & Wright, R.N. The effect of heat treatment on Mg2Si coarsening in aluminum 6105 alloy. Metall Mater Trans A 35, 435–438 (2004). https://doi.org/10.1007/s11661-004-0354-7

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  • DOI: https://doi.org/10.1007/s11661-004-0354-7

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