Issues »  Volume 36, Issue 5

Microstructure and Mechanical Properties of Hypereutectic Al—Si Alloy after Severe Plastic Deformation

V. Z. Spuskanyuk$^{1}$, A. L. Berezina$^{2}$, V. I. Dubodelov$^{3}$, О. A. Davydenko$^{1}$, V. N. Fixssen$^{3}$, K. I. Sliva$^{1}$, T. O. Monastyrska$^{2}$, A. N. Gangalo$^{1}$

$^{1}$Donetsk Institute for Physics and Engineering Named after O.O. Galkin, NAS of Ukraine, 72 R. Luxembourg Str., 83114 Donetsk, Ukraine
$^{2}$G.V. Kurdyumov Institute for Metal Physics, NAS of Ukraine, 36 Academician Vernadsky Blvd., UA-03680 Kyiv-142, Ukraine
$^{3}$Physical-and-Technological Institute of Metals and Alloys NAS of Ukraine, 34/1 Academician Vernadsky Blvd., UA-03680 Kyiv-142, Ukraine

Received: 29.11.2013. Download: PDF

The effect of severe plastic deformation (SPD) on the structure and properties of age-hardening hypereutectic Al—Si alloy is investigated. The composition of the studied alloy is Al—16.5% Si—3.77% Cu. Integrated thermoforce treatment of alloys in the liquid state (with melt treatment in the magnetohydrodynamic apparatus using the Cu—7% P modifier) and in the solid state (with hot pressing through the S-shaped angular matrix) is used. A ‘quasi-eutectic’ structure is observed after SPD of the initial cast state and the homogenized state that allows increasing ductility (up to 5.9%). Ageing results in the increasing strength (up to 459 MPa) and in the reducing plasticity (down to 0.6%).

Key words: hypereutectic silumin, magnetohydrodynamic technique, thermoforce processing of melt, severe plastic deformation, equal-channel angular pressing.

URL: http://mfint.imp.kiev.ua/en/abstract/v36/i05/0649.html

DOI: https://doi.org/10.15407/mfint.36.05.0649

PACS: 61.66.Dk, 61.72.Ff, 62.20.fq, 62.20.Qp, 81.20.Hy, 81.40.Lm

Citation: V. Z. Spuskanyuk, A. L. Berezina, V. I. Dubodelov, О. A. Davydenko, V. N. Fixssen, K. I. Sliva, T. O. Monastyrska, and A. N. Gangalo, Microstructure and Mechanical Properties of Hypereutectic Al—Si Alloy after Severe Plastic Deformation, Metallofiz. Noveishie Tekhnol., 36, No. 5: 649—660 (2014) (in Russian)

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