Archives of Foundry Engineering

Kolev, M.; Drenchev, L.; Stanev, L.

doi:10.24425/afe.2020.133326

2020

DOI: 10.24425/afe.2020.133326

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Archives of Foundry Engineering

M. Kolev,

L. Drenchev,

L. Stanev

Abstract: The present work studies the tribological properties of new hybrid material composed from high porosity open cell aluminum alloy (AlSi10Mg) skeleton and B83 babbitt infiltrated into it. The porous skeleton is obtained by replication method applying salt (NaCl) as space holder. The reinforcing phase of the skeleton consists of Al 2 O 3 particles. The skeleton contains Al 2 O 3 particles as reinforcement. The microstructure of the obtained materials is observed and the tribological properties are determined. A c… Show more

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2023

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Cited by 2 publications

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Production and Tribological Characterization of Advanced Open-Cell AlSi10Mg-Al2O3 Composites

Kolev

Drenchev

Petkov

et al. 2023

Metals

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In this study, advanced open-cell porous AlSi10Mg-Al2O3 composites have been successfully fabricated by replication of NaCl space holders. The tribological behavior under dry sliding conditions at room temperature of composites with different pore sizes was studied via the pin-on-disk method, and wear parameters, such as the coefficient of friction (COF) and mass wear, were determined. Micro-hardness tests have been performed to investigate the change in mechanical properties after the processing of the composite materials. Microstructural observation was conducted by means of light microscopy and scanning electron microscopy (SEM) along with chemical micro-analysis using an X-ray energy-dispersive spectroscopy (EDS) system. The obtained results revealed that the investigated AlSi10Mg-Al2O3 composites possess lower COF and mass wear than the open-cell porous AlSi10Mg material when subjected to the same test conditions. Furthermore, it was also reported that the effect of pore size is insignificant to the COF, and in relation to mass wear, the composite material with the larger pores shows better results.

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Production and Tribological Characterization of Advanced Open-Cell AlSi10Mg-Al2O3 Composites

Kolev

Drenchev

Petkov

et al. 2023

Metals

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Fabrication, Experimental Investigation and Prediction of Wear Behavior of Open-Cell AlSi10Mg-SiC Composite Materials

Kolev

Drenchev

Petkov

2023

Metals

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This research investigates the tribological behavior of advanced open-cell porous AlSi10Mg-SiC composites fabricated using the novel replication method of NaCl space holders. These composite materials have potential applications in lightweight and high-strength structures that require high resistance to friction and wear. The composites were tested using a pin-on-disk method under dry sliding-friction conditions at ambient temperature, with a sliding velocity of 1.0 m∙s−1 and an applied load of 50 N. The resulting wear parameters, including the coefficient of friction (COF) and mass wear, provided quantitative measures of the tribological behavior. Microstructural observations of the worn composite surfaces were carried out using scanning-electron microscopy (SEM) to study the wear mechanisms, and an elemental analysis was performed using X-ray energy-dispersive spectroscopy (EDS) to examine the elemental composition. The results showed that the AlSi10Mg-SiC composites had lower mass wear and COF than the open-cell porous AlSi10Mg material under the same experimental conditions. Three different machine learning (ML) models were employed to predict the COF of the composites, and their performances were evaluated using the R2, MSE, RMSE, and MAE metrics on the validation and test sets.

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Archives of Foundry Engineering

Cited by 2 publications

References 15 publications

Production and Tribological Characterization of Advanced Open-Cell AlSi10Mg-Al2O3 Composites

Production and Tribological Characterization of Advanced Open-Cell AlSi10Mg-Al2O3 Composites

Fabrication, Experimental Investigation and Prediction of Wear Behavior of Open-Cell AlSi10Mg-SiC Composite Materials

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