The influence of interfacial characteristics between SiCp and Mg/Al metal matrix on wear, coefficient of friction and microhardness

Thakur, Sanjay Kumar; Dhindaw, B. K.

doi:10.1016/s0043-1648(00)00536-6

Cited by 150 publications

(58 citation statements)

References 25 publications

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“…These observations reveal the positive effect of B 4 C incorporation on the friction properties of the respected samples, which can be attributed to the specific characteristics of the mechanically milled nanocomposites, namely clean interface (free of reaction products at the interface between the matrix and reinforcement), and improved dispersion of the nanoparticles. Thakur et al [30] reported that proper dispersion of the dispersoids beside stronger and cleaner matrix/reinforcement interface reduces the value of FC.…”

Section: Methodsmentioning

confidence: 99%

Wear Behavior of Nanostructured Al and Al–B4C Nanocomposites Produced by Mechanical Milling and Hot Extrusion

Alizadeh

Taheri-Nassaj

2011

Tribol Lett

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Wear properties of a nanostructured matrix of Al prepared via mechanical milling and hot extrusion were investigated before and after incorporation of B 4 C nanoparticles. The sample powders were milled for a period of 20 h to produce nanopowders. Mechanical milling was used to prepare nanocomposite samples by addition of 2 and 4 wt% of B 4 C nanoparticles into the Al matrix. A pinon-disk setup was used to evaluate the wear properties of the hot extruded samples under dry condition. The results revealed a lower friction coefficient and a lower wear rate for the nanostructured matrix of Al in contrast to a commercial coarse grained Al matrix. The same pattern was also observed in the nanocomposite samples with respect to the base matrix. Hardness values were used to discuss the observed results. Scanning electron microscopy (SEM) was used to analyze the worn surface and wear debris.

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Section: Methodsmentioning

confidence: 99%

Wear Behavior of Nanostructured Al and Al–B4C Nanocomposites Produced by Mechanical Milling and Hot Extrusion

Alizadeh

Taheri-Nassaj

2011

Tribol Lett

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“…The degree of clustering is expected to influence the wear performance by providing preferential sites for crack nucleation. [38] Even though the density decreased and the porosity increased with the addition of Al 2 O 3 particles to more than 5 wt pct, the microhardness reading and the wear resistance coefficient were improved for the composites with 5 to 20 wt pct Al 2 O 3 particles. However, the composite's properties declined when 25 wt pct Al 2 O 3 particles were used.…”

Section: Resultsmentioning

confidence: 91%

The Effects of Al2O3 Amount on the Microstructure and Properties of Fe-Cr Matrix Composites

Shamsuddin

Jamaludin

Hussain

et al. 2010

Metall Mater Trans A

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Iron based matrix composites reinforced with 5 to 25 wt pct of Al 2 O 3 particles were fabricated using the powder metallurgy method. The samples were prepared by mixing at 250 rpm for 30 minutes, uniaxially pressing at 750 MPa and sintering in a vacuum furnace at a temperature of 1373 K (1100°C) for 2 hours with 10°C/min heating rate. The optimum amount of reinforcement was determined by evaluating the microstructure, relative density, total porosity, micro Vickers hardness, and wear resistance of the composites. The results and analysis revealed that the micro Vickers hardness and wear resistance of the composites were better after increasing the reinforcement up to 20 wt pct. Increasing the Al 2 O 3 particles to 25 wt pct resulted in a decrease in mechanical properties due to agglomeration of the particles in the matrix, which lowers the interaction between the matrix and reinforcement.

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“…As the green compact is hot-pressed at low temperature and hot-extruded at a temperature little higher than the solidus temperature, the SiC/Al interfacial bond is strong with high strength Al matrix, resulting that much higher stress is needed to break the SiC/Al interfaces. Under the condition that the SiC/Al interfacial bond is strong, the SiC particles bear too much stress and crack during the load transferring, especially the particle corners are easy to fracture due to the stress concentration, explaining the phenomena that small broken SiC particles as well as large ones deposit in the fracture surfaces [8]. Due to the strong interfacial bond, the volume of Al matrix participating in deformation reduces and the Al matrix near to the depositions undergoes severe plastic deformation.…”

Section: Smae 2016mentioning

confidence: 99%

Effects of Processing Parameters on Properties of SiCp/Al Composites

Hui

Shao

et al. 2016

MATEC Web Conf.

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Abstract. The effects of hot pressing and hot extrusion temperatures on the properties of 12%SiCp/6066Al (volume fraction) composites fabricated by powder metallurgy have been studied. The experimental results indicate that the hot extrusion, an essential stage of powder metallurgy to produce this sort of particle reinforced metal matrix composites, can redistribute SiC particles in metal matrix and refine the matrix grain size, and that the hot pressing can improve the interfacial cohesion strength between SiC particles and metal matrix. When hot-pressed at temperatures slightly higher than the solidus temperature of the composite and hot-extruded at lower temperatures, the composites are stronger due to the high metal matrix strength and interfacial cohesion. The optimum parameters of hot pressing and hot extrusion in the composites are 560 and 430 , respectively.

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The influence of interfacial characteristics between SiCp and Mg/Al metal matrix on wear, coefficient of friction and microhardness

Cited by 150 publications

References 25 publications

Wear Behavior of Nanostructured Al and Al–B4C Nanocomposites Produced by Mechanical Milling and Hot Extrusion

Wear Behavior of Nanostructured Al and Al–B4C Nanocomposites Produced by Mechanical Milling and Hot Extrusion

The Effects of Al2O3 Amount on the Microstructure and Properties of Fe-Cr Matrix Composites

Effects of Processing Parameters on Properties of SiCp/Al Composites

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