Mechanical and tribological properties of zinc-aluminium metal-matrix composites

1992 ◽  
Vol 27 (21) ◽  
pp. 5681-5691 ◽  
Author(s):  
S. H. J. Lo ◽  
S. Dionne ◽  
M. Sahoo ◽  
H. M. Hawthorne
Keyword(s):  
Metal Matrix Composites ◽  
Tribological Properties ◽  
Metal Matrix ◽  
Matrix Composites ◽  
Mechanical And Tribological Properties ◽  
Aluminium Metal

Effect of Graphene Nanoplatelets Incorporation on Microstructural and Tribological Properties of Aluminium Metal Matrix Composites

2019 ◽  
Author(s):  
Ankit Sharma ◽  
Amrita Priyadarshini ◽  
Ravindran Sujith ◽  
M. V. Sankara Subrahmanyam ◽  
P. Alen Thomas ◽  
...  
Keyword(s):  
Metal Matrix Composites ◽  
Coefficient Of Friction ◽  
Tribological Properties ◽  
Vickers Hardness ◽  
Metal Matrix ◽  
Stir Casting ◽  
Graphene Nanoplatelets ◽  
Matrix Composites ◽  
Mechanical And Tribological Properties ◽  
Aluminium Metal

Abstract Aluminium metal matrix composites exhibiting superior mechanical and tribological properties have gained immense interest in recent years. These comosites are finding broad applications in the fields of automotive, aerospace, military and marine. Graphene Nanoplatelets (GNPs), as reinforcement in composites, have become a prime focus because of its exceptional characteristic properties. In the present study, GNPs are dispersed into the aluminium alloy as reinforcements by using stir casting method. To ensure proper dispersion, sintered pellets of aluminium mixed with GNPs are added to the molten metal. The dispersion of the GNPs and the microstructural changes due to the addition of GNPs are observed using Scanning Electron Microscopy (SEM) and elemental mapping. Vickers hardness tester is used to measure hardness of these samples. To compare the tribological properties of Al/GNP composite as well as pure alumimum samples, pin-on-disc experiments are conducted for a specific combination of sliding speed and sliding distance at different loading conditions. The weight loss, wear rate and coefficient of friction are measured and favourable effects of GNPs on tribological properties of Al/GNP composite are discussed. In addition, the wear mechanism has been understood in detail by conducting microstructural studies of the worn surfaces using SEM and Energy Dispersive Spectroscopy. It is observed that the Vickers hardness of the composite increased to a maximum of 25% while coefficient of friction decreased to a minimum of 26% for Al/GNP composite.

Investigation of Mechanical and Tribological Properties of Al6061–TiB2 Metal Matrix Composites

2020 ◽  
Vol 9 (1) ◽  
pp. 20190173 ◽  
Author(s):  
G. B. Veeresh Kumar ◽  
D. Gopinath Reddy ◽  
C. Vineeth Reddy ◽  
Ch Sriteja ◽  
R. Pramod
Keyword(s):  
Metal Matrix Composites ◽  
Tribological Properties ◽  
Metal Matrix ◽  
Matrix Composites ◽  
Mechanical And Tribological Properties

scholarly journals Mechanical and Tribological Properties of Metal Matrix Composites Reinforced with Short Carbon Fibre

2014 ◽  
Vol 59 (2) ◽  
pp. 707-711 ◽  
Author(s):  
M. Łągiewka
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Carbon Fibre ◽  
Metal Matrix Composites ◽  
Tribological Properties ◽  
Metal Matrix ◽  
Matrix Alloy ◽  
Matrix Composites ◽  
Mechanical And Tribological Properties ◽  
Short Carbon

Abstract The paper constitutes the culmination of the foregoing investigations concerning the influence of short carbon fibre on the enhancement of AlMg10 alloy properties. The presented work brings forward the results of examinations of mechanical and tribological properties of metal matrix composites (MMCs) based on this alloy. Composites were produced by two methods: either by gravity casting or by squeeze casting in semi-solid state of a composite suspension previously obtained through mixing of its components. The volume fraction of the reinforcing phase varied and took the value of 5, or 10, or finally 15 vol. %. Specimens cut out of the experimental castings were examined with respect both to their mechanical properties, i.e. the tensile strength and unit elongation, and to their tribological behaviour. A series of examinations of the mechanical properties proved a slight increase in tensile strength and a minor decrease in unit elongation of the examined composite materials both for gravity cast and squeeze cast specimens, as compared with the properties of pure matrix alloy. The introduction of short carbon fibre into the matrix alloy resulted also in the increased abrasive wear resistance of the examined composites in comparison to the non-reinforced matrix.

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