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MECHANICAL AND TRIBOLOGICAL BEHAVIOUR OF Ti2AlC REINFORCED HYPEREUTECTIC ALUMINIUM ALLOY MATRIX COMPOSITE FABRICATED BY VACUUM ASSISTED INDUCTION MELTING: EXPERIMENTAL AND THEORETICAL MODELLING
Indexado
WoS WOS:001033432300002
Scopus SCOPUS_ID:85165154076
DOI 10.1007/S40962-023-01115-5
Año 2023
Tipo artículo de investigación

Citas Totales

Autores Afiliación Chile

Instituciones Chile

% Participación
Internacional

Autores
Afiliación Extranjera

Instituciones
Extranjeras


Abstract



The effects of vacuum induction melting and various concentrations (range of 0–8% by weight) of the titanium aluminium carbide (Ti2AlC) phase on the mechanical and tribological properties of Aluminium hypereutectic alloy (A390) were investigated. The addition of Ti2AlC particles enhances the strength and wear resistance of A390 alloy and also exerts a positive effect on its ductility, Moreover aerospace and automotive brake rotors deserved high strength and high wear resistance. The quick induction heating process could decrease the thermal energy degradation of the Ti2AlC particles into an Al alloy matrix alloy. The structural, microscopic and elemental analysis carried out to observe the hard precipitate components and reveal the various phases of the composites. The addition of Ti2AlC inclusions altered the morphology of eutectic silica to be globular and improved the grain size and evenly distributed within the A390 (Al-16Si) matrix. As the content of Ti2AlC reaches 8 wt% the strength and microhardness of the composites increased 74% and elongation decreased 2.1% (UTS = 285 MPa, H = 127VMH and EI = 1.1%). The tensile and fracture behaviour of the composites has been studied at 30 °C, 150 °C, and 250 °C. The Johnson-Cook model theoretically calculated the accurate flow stress of the Al-16Si/Ti2AlC composites. The negligible decrease in strength and ductility at 250 °C was observed. The root mean squared error (RMSE) and mean absolute percentage error (MAPE) values for the stress-strain curves prove the higher relationship between the theoretical and experimental values. The composites containing 8 wt% Ti2AlC reinforcement significantly enhanced the mechanical behaviour with a porosity < 2.23%.Therefore this composite exhibited appreciable tribological properties. It appeared that the wear mechanism of the composites abrasive wear at applied pressure 0.2 MPa with sliding distance 2000 m was prevailing. The ANN model addressing the parameters which influence the wear rate and friction coefficient as well as the experimental wear analysis of these composites was correlated precisely with the results of this model. Graphical Abstract: (Figure presented.)

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Disciplinas de Investigación



WOS
Metallurgy & Metallurgical Engineering
Scopus
Industrial And Manufacturing Engineering
Materials Chemistry
Mechanics Of Materials
Metals And Alloys
SciELO
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Publicaciones WoS (Ediciones: ISSHP, ISTP, AHCI, SSCI, SCI), Scopus, SciELO Chile.

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Autores - Afiliación



Ord. Autor Género Institución - País
1 Keerthipalli, Trinath - National Institute of Technology, Agartala - India
NIT Agartala - India
2 Aepuru, Radhamanohar - Universidad Tecnológica Metropolitana - Chile
3 Biswas, Ajay Hombre National Institute of Technology, Agartala - India
NIT Agartala - India

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Financiamiento



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