FEATURES OF STRUCTURE FORMATION AND CHANGES IN THE MECHANICAL PROPERTIES OF CAST Al-Mg-Si-Mn ALLOY WITH THE ADDITION OF (Ti+Zr)

Authors

  • Oleksandr Trudonoshyn National Technical University of Ukraine “KPI” Faculty of Physical Engineering
  • Maxim Puchnin 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.2015.55.0282

Keywords:

Al-Mg-Si-Mn alloys, Ti addition, microstructure, mechanical properties, multistep nucleation

Abstract

The as-cast and heat-treated structure of permanent mould castings of AlMg5Si2Mn alloys with different contents of Ti has been investigated by differential scanning calorimetry, hardness and microhardness measurements, tensile tests and fractography analyses, scanning electron microscopy, transmission electron microscopy, and energy dispersive X-ray analysis. We have established that α-Al dendrites can be nucleated on an Al-Ti substrate, and also that primary Mg2Si crystals can be nucleated on oxides, including oxides of Al and Ti compounds. The dependence of the change in mechanical properties on ageing time, and on the amount of Ti in the alloys, is shown.

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Author Biographies

  • Oleksandr Trudonoshyn, National Technical University of Ukraine “KPI” Faculty of Physical Engineering

    Department of Physicochemical Foundations of Metallurgical Processes

    Material science, casting alloys, Al alloys

     

  • Maxim Puchnin, CTU in Prague Faculty of. Mechanical engineering

    Department of materials engineering

    Material diagnostic - metallography, electron microscopy, mechanical tests, express methods

     

     

  • 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

Issue

Vol. 55 No. 4 (2015)

Section

Articles

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How to Cite

Trudonoshyn, O., Puchnin, M., & Mykhalenkov, K. (2015). FEATURES OF STRUCTURE FORMATION AND CHANGES IN THE MECHANICAL PROPERTIES OF CAST Al-Mg-Si-Mn ALLOY WITH THE ADDITION OF (Ti+Zr). Acta Polytechnica, 55(4), 282-290. https://doi.org/10.14311/AP.2015.55.0282