Original scientific paper

https://doi.org/10.21278/TOF.494079425

Influence of the Equal Channel Angular Extrusion on the Aluminium-Fly Ash Composite

Merima Muslić orcid.org/0000-0003-1940-5027 ; E-PRO Ltd. for Design, Engineering, and Technical Consulting, Bihać, Bosnia and Herzegovina *
Vera Rede ; University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, Croatia
Zdenka Keran ; University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, Croatia
Helena Lukšić ; University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, Croatia

* Corresponding author.

Abstract

This paper presents the influence of equal channel angular extrusion on the microstructure and properties of composites based on the A356.0 aluminium alloy with the addition of 6 wt.% fly ash as reinforcement. The composite was produced using the compo casting method. The microstructure of the composite was analysed using an optical microscope, computer tomography, and scanning electron microscopy. Rosettes and spheroidal particles were observed in the microstructure of the cast sample, and there was a good distribution of fly ash within the matrix. Equal channel angular extrusion was performed in three passes at the same parameters. After each pass, the microstructure was refined, and fly ash was even better mixed into the matrix. Thus, the strength and hardness of the composite increased after each pass. A fully homogeneous material was achieved after the second pass.

Keywords

equal channel angular extrusion; aluminium-fly ash composite; fly ash; computer tomography; scanning electron microscopy

Hrčak ID:

343057

URI

https://hrcak.srce.hr/343057

Publication date:

10.12.2025.

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