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Interpretation of DTA curves for microstructure characterization of a commercial Al-Zn-Mg alloy (7015), aided by conductivity and hardness measurements

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Abstract

Hardness and conductivity measurements are shown to be useful to help the interpretation of differential thermal analysis (DTA) curves for aluminium alloys in different metallurgical states. In particular, a commercial Al-Zn-Mg alloy (7015) is studied in four metallurgical conditions. The results of the present analysis are compared with recent studies carried out by other authors on similar alloys by means of transmission electron microscopy (TEM) and differential scanning calorimetry (DSC).

Zusammenfassung

Es wurde gezeigt, daß Härte- und Leitfähigkeitsmessungen bei der Interpretation von Kurven der Differentialthermoanalyse von Aluminiumlegierungen in verschiedenen metallurgischen Zuständen nützlich sind. Besonders eine handelsübliche Al-Zn-Mg Legierung (7015) wurde unter vier metallurgischen Bedingungen untersucht. Die Ergebnisse der durchgeführten Analyse wurden mit neueren Untersuchungen anderer Autoren an ähnlichen Legierungen durch Transmissions-Elektronenmikroskopie und DSC verglichen.

Резюме

Показано, что измерен ия проводимости и твердости могут быть полезными при интерпретации кривы х дифференциального термического анализ а алюминиевых сплаво в различного металлур гического состояния. В частности, изучен продажный спл ав Al-ZnMg (7015) в четырех металлург ических состояниях. Р езультаты проведенного анализ а сопоставленими иссл едованиями, выполнен ными другими авторами на подобмых сплавах с помощью электронно го микроскопа на ыифференциальной ск анирующей калоримет рии.

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Authors and Affiliations

  1. Centro de Investigación y Desarrollo de Alicante ENDASA, Alicante, Spain

    C. G. Cordovilla & E. Louis

Authors
  1. C. G. Cordovilla
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  2. E. Louis
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Additional information

We are very grateful to the Laboratories of ENPETROL (Escombreras, Spain) for making their DTA facilites available to us.

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Cordovilla, C.G., Louis, E. Interpretation of DTA curves for microstructure characterization of a commercial Al-Zn-Mg alloy (7015), aided by conductivity and hardness measurements. Journal of Thermal Analysis 24, 215–222 (1982). https://doi.org/10.1007/BF01913676

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  • DOI: https://doi.org/10.1007/BF01913676

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