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A Study of Precipitates Formation in AA 380.0 Aluminium Alloys Modified by the Addition of Magnesium

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Abstract

A data acquisition system and the SAD2 software, that provide characteristic cooling curves, in combination with microstructure analysis were used to study precipitates formation in the AA380.0 aluminium alloys modified by adding extra magnesium. The samples were solidified with distinct cooling rates caused by carrying out the solidification in shell and permanent molds. The mathematics processing of the cooling curves in agreement with the microstructure analysis have confirmed the remarkable presence of both the Al–Si dendrite network and the Mg2Si interdendritic phase in the alloys with the addition of extra magnesium.

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Authors and Affiliations

  1. School of Engineering, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, Brazil

    B. A. Dedavid & E. M. Costa

  2. Foundry Laboratory, Center of Technology, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil

    C. R. F. Ferreira

Authors
  1. B. A. Dedavid
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  2. E. M. Costa
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  3. C. R. F. Ferreira
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Dedavid, B.A., Costa, E.M. & Ferreira, C.R.F. A Study of Precipitates Formation in AA 380.0 Aluminium Alloys Modified by the Addition of Magnesium. Journal of Thermal Analysis and Calorimetry 67, 473–480 (2002). https://doi.org/10.1023/A:1013949215921

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  • DOI: https://doi.org/10.1023/A:1013949215921

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