Effect of reinforcement size and volume fraction on the abrasive wear behaviour of AA7075 Al/SiCp P/M composites—A statistical analysis

Abstract The presented work deals with the influence of the addition of soft graphite particles on the abrasive wear of composite reinforced with hard SiC particles. The discussed hybrid composites were produced by stirring the liquid alloy and simultaneous adding the mixture of particles. The adequately prepared suspension was gravity cast into a metal die. Both the composite castings obtained in this way and the comparative castings produced of the pure matrix alloy were examined for the abrasive wear behaviour. Photomacrographs of the sliding surfaces of the examined composites were taken, and also the hardness measurements were carried out. It was found that even a small addition of Cgr particles influences positively the tribological properties of the examined composite materials, protecting the abraded surface from the destructive action of silicon carbide particles. The work presents also the results of hardness measurements which confirm that the composite material hardness increases with an increase in the volume fraction of hard reinforcing particles.

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Effects of Reinforcement Volume Fraction on the Abrasive Wear Behaviour of Al—MgO Composites Produced by the Vacuum Infiltration Method

Proceedings of the Institution of Mechanical Engineers Part J Journal of Engineering Tribology ◽

10.1177/1350650110396307 ◽

2011 ◽

Vol 225 (2) ◽

pp. 84-90 ◽

Cited By ~ 6

Author(s):

M Pul ◽

G Küçüktürk ◽

R Çalin ◽

U Şeker

Keyword(s):

Abrasive Wear ◽

Volume Fraction ◽

Vacuum Infiltration ◽

Wear Behaviour ◽

Abrasive Wear Behaviour ◽

Infiltration Method

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Computational investigation of testing parameter effects on abrasive wear behaviour of AL2O3 particle-reinforced MMCS using statistical analysis

The International Journal of Advanced Manufacturing Technology ◽

10.1007/s00170-010-2734-z ◽

2010 ◽

Vol 52 (1-4) ◽

pp. 207-215 ◽

Cited By ~ 19

Author(s):

Metin Kök

Keyword(s):

Statistical Analysis ◽

Abrasive Wear ◽

Al2o3 Particle ◽

Wear Behaviour ◽

Computational Investigation ◽

Testing Parameter ◽

Abrasive Wear Behaviour

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Vanadium Additions to a High-Cr White Iron and its Effects on the Abrasive Wear Behavior.

MRS Advances ◽

10.1557/adv.2020.414 ◽

2020 ◽

Vol 5 (59-60) ◽

pp. 3077-3089

Author(s):

Alexeis Sánchez ◽

Arnoldo Bedolla-Jacuinde ◽

Francisco V. Guerra ◽

I. Mejía

Keyword(s):

Heat Treatment ◽

Abrasive Wear ◽

Volume Fraction ◽

Wear Behavior ◽

Wear Behaviour ◽

White Iron ◽

Heat Treated ◽

Bulk Hardness ◽

Abrasive Wear Behavior ◽

Vanadium Carbides

AbstractFrom the present study, vanadium additions up to 6.4% were added to a 14%Cr-3%C white iron, and the effect on the microstructure, hardness and abrasive wear were analysed. The experimental irons were melted in an open induction furnace and cast into sand moulds to obtain bars of 18, 25, and 37 mm thickness. The alloys were characterized by optical and electronic microscopy, and X-ray diffraction. Bulk hardness was measured in the as-cast conditions and after a destabilization heat treatment at 900°C for 45 min. Abrasive wear resistance tests were undertaken for the different irons according to the ASTM G65 standard in both as-cast and heat-treated conditions under a load of 60 N for 1500 m. The results show that, vanadium additions caused a decrease in the carbon content in the alloy and that some carbon is also consumed by forming primary vanadium carbides; thus, decreasing the eutectic M7C3 carbide volume fraction (CVF) from 30% for the base iron to 20% for the iron with 6.4%V;but overall CVF content (M7C3 + VC) is constant at 30%. Wear behaviour was better for the heat-treated alloys and mainly for the 6.4%V iron. Such a behaviour is discussed in terms of the CVF, the amount of vanadium carbides, the amount of martensite/austenite in matrix and the amount of secondary carbides precipitated during the destabilization heat treatment.

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