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Tribological effects of carbon nanotubes on magnesium alloy AZ31 and analyzing aging effects on CNTs/AZ31 composites fabricated by stir casting process

Abbas, Aqeel ; Huang, Song Jeng ; Ballóková, Beáta ; Sülleiová, Katarína

Tribology international, 2020-02, Vol.142, p.105982, Article 105982 [Periódico revisado por pares]

Kidlington: Elsevier Ltd

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Título:
Tribological effects of carbon nanotubes on magnesium alloy AZ31 and analyzing aging effects on CNTs/AZ31 composites fabricated by stir casting process
Autor: Abbas, Aqeel ; Huang, Song Jeng ; Ballóková, Beáta ; Sülleiová, Katarína
Assuntos: Abrasion ; Age hardening ; Aging (metallurgy) ; Coefficient of friction ; Composite materials ; Dry sliding ; Lubricating properties ; Lubrication ; Magnesium alloy/AZ31 ; Magnesium base alloys ; Metal matrix composites ; Microhardness ; Multi wall carbon nanotubes ; Oxidation ; Plastic deformation ; Self lubrication ; Test equipment ; Tribology ; Wear mechanism ; Wear mechanisms ; Wear rate ; Wet sliding
É parte de: Tribology international, 2020-02, Vol.142, p.105982, Article 105982
Descrição: The tribological behavior of AZ31 Mg alloy reinforced with multiwall carbon nanotubes (MWCNTs) was studied through experiments on a ring-on-block wear testing apparatus against 45C steel. The composites were successfully fabricated using stir-casting processing with different percentages of MWCNTs and then age hardened for 10 h. The effect of the various concentrations of MWCNTs on the microstructures, tribological properties, and wear mechanisms of the composites were systematically examined by scanning electron microscopy (SEM). With increasing percentage content of MWCNTs, the wear rate and the coefficient of friction decreased, which is attributed to the microhardness and self-lubricating properties of the MWCNTs. The microstructure characterization results established different mechanisms—specifically, abrasion, oxidation, and delamination—and very small plastic deformation. •Magnesium alloy AZ31 reinforced with multiwalled carbon nanotubes was fabricated using stir casting method.•Samples were homogenized for 24 h at 400C0 and then aged for 10 h at 200C0 temperature.•Wear tests for as-cast and aged composites were performed using Ring on Block wear apparatus under dry and wet conditions and mass wear loss and coefficient of friction was determined.•Worn surfaces were analyzed using scanning electron microscope for wear mechanism analysis.
Editor: Kidlington: Elsevier Ltd
Idioma: Inglês

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Tribological effects of carbon nanotubes on magnesium alloy AZ31 and analyzing aging effects on CNTs/AZ31 composites fabricated by stir casting process

Abbas, Aqeel ; Huang, Song Jeng ; Ballóková, Beáta ; Sülleiová, Katarína

Kidlington: Elsevier Ltd

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