Solid particle erosion resistance of Al alloy and Al alloy-fly ash composite subjected to equal-channel angular pressing

  • Merima Muslić Ltd. E-PRO for design, engineering and technical consulting, Bihać, Bosnia and Herzegovina https://orcid.org/0000-0003-1940-5027
  • Vera Rede Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Zagreb, Croatia https://orcid.org/0000-0003-3456-1765
  • Vesna Maksimović Vinča Institute of Nuclear Sciences - National Institute of thе Republic of Serbia, University of Belgrade, Mike Petrovića Alasa 12-14, 11001 Belgrade, Serbia https://orcid.org/0000-0002-8326-4938
Keywords: Erosion resistance, Al alloy, Composite, FA-fly ash, ECAP-Equal Channel Angular Pressing

Abstract

This paper describes the influence of deformation by equal-channel angular pressing (ECAP) on the solid particle erosion resistance of the AlSi7Mg0.3 alloy and AlSi7Mg0.3 based composite material reinforced with the addition of 4 % of fly ash (FA) particles. Both, alloy and composite samples were produced using the compo-casting method. The samples have been subjected to ECAP in multiple passes with the rotation of samples around the vertical axis for the angle of 90° after each pass. Particles of silicon carbide (SiC) have been used as erodent while their impact angle was varied (30° and 90°). Observed samples of AlSi7Mg0.3 alloy generally showed higher wear resistance at 90° angle where material fatigue predominates, than at a 30° angle where abrasion-related phenomena predominate. On the other hand, AlSi7Mg0.3 based composite material exhibited erosion wear at 30° angle less than at 90° angle after one ECAP pass. Evaluation of the erosion resistance has been made based on mass and volume loss. After two passes of ECAP, the matrix structure of the AlSi7Mg0.3 based composite material, as well as that of the AlSi7Mg0.3 alloy was improved from the aspect of erosion resistance.

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Published
2021-03-23
Section
Composite materials - novelties in manufacturing and application