Manufacturing Technology 2020, 20(3):318-326 | DOI: 10.21062/mft.2020.049

Research of the influence of impurities on the occurrence of intermetallic phases in AlMg3 alloy

Iryna Hren, ©tefan Michna, Jaromír Cais, Lenka Michnová
Faculty of Mechanical Engineering, J. E. Purkyne University in Usti nad Labem. Pasteurova 3334/7, 40001 Usti nad Labem. Czech Republic

The main aim of this work was to investigate the influence of impurities on the occurrence of interemtalic phases in AlMg3 alloy. The effect of accompanying (admixture) elements was studied, namely: manganese, iron and silicon in various combinations of AlMg3 alloy. There was a high manganese content in one melt for AlMg3, a high iron and manganese content in the second, and a high manganese, iron and silicon content in the third. The reason for identifying and monitoring the occurrence of intermetallic phases in these accompanying elements is their limited solubility in aluminum, where they are practically secreted only in the form of different types of intermetallic phases. These intermetallic phases then reduce the resulting mechanical properties, especially ductility and also reduce the corrosion resistance of the AlMg3 alloy. Decrease of ductility causes consequently worse formability of the material and brittle intermetallic phases initiate microcracks with subsequent cracking of the material

Keywords: AlMg3 alloy, mechanical properties, intermetallic phases, manganese, iron, silicon, strength, ductility, chemical composition, EDS analysis
Grants and funding:

UJEP-SGS-2020-48-002-2. UJEP-SGS-2019-48-001-2.

Received: May 20, 2020; Revised: July 15, 2020; Accepted: July 24, 2020; Prepublished online: September 3, 2020; Published: September 7, 2020  Show citation

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Hren I, Michna ©, Cais J, Michnová L. Research of the influence of impurities on the occurrence of intermetallic phases in AlMg3 alloy. Manufacturing Technology. 2020;20(3):318-326. doi: 10.21062/mft.2020.049.
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