EFFECT OF THE ADDITION OF LI ON THE STRUCTURE AND MECHANICAL PROPERTIES OF HYPOEUTECTIC Al-Mg2Si ALLOYS

Authors

  • Olena Prach National Technical University of Ukraine “KPI” Faculty of Physical Engineering
  • Jakub Horník CTU in Prague Faculty of. Mechanical engineering
  • Kostiantyn Mykhalenkov National Technical University of Ukraine “KPI” Faculty of Physical Engineering

DOI:

https://doi.org/10.14311/AP.2015.55.0253

Keywords:

cast Al-Mg-Si alloys, Li addition, DSC, nanosize precipitation

Abstract

Alloys with various contents of Li were studied by means of  differential scanning calorimetry (DSC), transmission electron microscopy (TEM) and energy dispersive X-Ray microanalysis (EDX).
The TEM investigations revealed that three different types of precipitation are formed in the alloy matrix during artificial aging. Two of the types represent different morphologies of Mg2Si precipitates. The appearance of the third type, identified as the δ-Al3Li phase, shows that the Al-Mg-Si system can be used successfully for designing an Li-containing casting alloy. However, this alloy has not yet been developed.

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Author Biographies

Olena Prach, National Technical University of Ukraine “KPI” Faculty of Physical Engineering

Department of Physicochemical Foundations of Metallurgical Processes

Material science, casting alloys, Al alloys

 

Jakub Horník, CTU in Prague Faculty of. Mechanical engineering

Department of materials engineering

Material diagnostic - metallography, electron microscopy

Kostiantyn Mykhalenkov, National Technical University of Ukraine “KPI” Faculty of Physical Engineering

Department of Physicochemical Foundations of Metallurgical Processes

Material science, casting alloys, Al alloys

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Published

2015-08-31

How to Cite

Prach, O., Horník, J., & Mykhalenkov, K. (2015). EFFECT OF THE ADDITION OF LI ON THE STRUCTURE AND MECHANICAL PROPERTIES OF HYPOEUTECTIC Al-Mg2Si ALLOYS. Acta Polytechnica, 55(4), 253–259. https://doi.org/10.14311/AP.2015.55.0253

Issue

Vol. 55 No. 4 (2015)

Section

Articles