Tribological Behavior of A356/Al2O3 Surface Nanocomposite Prepared by Friction Stir Processing

Mazaheri, Yousef; Karimzadeh, F.; Enayati, M.H.

doi:10.1007/s11661-013-2140-x

Cited by 66 publications

(28 citation statements)

References 27 publications

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“…Since maximum hardness was obtained for specimen FSPed with a ratio of 100% Al 2 O 3 , it is in consistent with the fare wear rate obtained for this ratio. As mentioned above, the obtained improvement of wear resistance is related to higher hardness values because of microstructural evolutions and grain re nement during FSP (26,45).…”

Section: Wear Behaviorsmentioning

confidence: 73%

“…It is well known that the microstructure of the SZ consists of ne and equiaxed grains due to dynamic recrystallization (18,19). FSP has proved to be successful in the adaptation of various properties such as mechanical properties (20)(21)(22), enhancing the machinability (23), fatigue (24,25), wear (9,10,26,27) and corrosion resistance (7).…”

Section: Introductionmentioning

confidence: 99%

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Surface Hybrid Nanocomposite Produced by Friction Stir Processing: Microstructural Evolution, Mechanical Properties and Tribological Behavior

Ahmadifard¹,

Shahin²,

Vakili-Azghandi³

et al. 2021

Preprint

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This study investigates the effects of incorporating Ti3AlC2 MAX phase into Al7075-T6 alloy by friction stir processing as well as adding Al2O3 nanoparticles to obtain a surface hybrid nanocomposite. These composites were successfully prepared by friction stir processing with a rotational speed of 1000 rpm and a travel speed of 28 mm/min after 3 passes. Optical, atomic force and scanning electron microscopy as well as microhardness, tensile and wear tests utilized to characterize the fabricated surface hybrid nanocomposites. Results showed that the maximum tensile strength and hardness value were achieved for Al-100% Al2O3 composite due to more grain refinement and effective dispersion of nanoparticles. Due to its laminar structure, Ti3AlC2 MAX phase enhanced better tribological characterization whereas Al2O3 nanoparticles cause better mechanical properties. Scanning electron microscopy tests revealed that the wear mechanism changes from adhesive for Al7075 alloy to adhesive-abrasive for the nanocomposite specimens.

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Section: Wear Behaviorsmentioning

confidence: 73%

Section: Introductionmentioning

confidence: 99%

Surface Hybrid Nanocomposite Produced by Friction Stir Processing: Microstructural Evolution, Mechanical Properties and Tribological Behavior

Ahmadifard¹,

Shahin²,

Vakili-Azghandi³

et al. 2021

Preprint

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show abstract

“…According to this equation, the increase in the surface hardness reduces the wear rate. 25,26,37 Therefore, the higher wear resistance of the composite samples compared to the base metal and the non-reinforced friction stir processed sample is because of their higher hardness. In the composite samples, the increase in the volume percentage of the reinforcement particles reduced the distance between the particles.…”

Section: Resultsmentioning

confidence: 99%

The effect of powder addition manner and volume fraction of reinforcement on tribological behavior of Al7075/B₄C surface composite produced by friction stir processing

Karpasand

Ardestani

Abbasi

2020

Journal of Composite Materials

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Al7075/B4C surface composites were fabricated by friction stir processing using four passes. The B4C powders were added into the prepared grooves with 1 and 2 mm width at the surface of Al7075 alloy in two different manners. In the first one, the B4C powders were added prior to the four consecutive passes in one stage. In the second manner, the powders were added in two stages, prior to the first pass and following the second one. The microstructural evaluations showed that the increase in the volume fraction of reinforcement significantly reduced the matrix grain size. Meanwhile, the reinforcement had a more homogeneous and uniform distribution in the samples processed through four consecutive passes. The maximum hardness and wear resistance was achieved in the one-stage powder-added samples, containing higher volume fraction of the reinforcement. A direct relationship was observed between the wear resistance and the composite layer hardness. The wear mechanism in the Al7075 substrate and the non-reinforced friction stir processed sample was the delamination of unstable aluminum oxide tribolayer. However, in the composite samples, a mechanically mixed layer, containing aluminum, chromium, and iron mixed oxides was formed along with B4C on the worn surface. In the two-stage powder-added samples, containing lower amounts of reinforcement, the detachment of mechanically mixed layer resulted in three-body abrasive wear condition and high friction coefficient. However, the most stable mechanically mixed layer was formed on the surface of the one-stage powder-added sample containing higher amounts of B4C.

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“…Providing the surface coatings on the material before FSP is another strategy to incorporate the secondary phases into the matrix material (Mazaheri et al 2014;Kurt et al 2011). Secondary phase is coated on the surface by any suitable coating technique before FSP.…”

Section: Surface Coating Followed By Fsp Methodsmentioning

confidence: 99%

Different strategies of secondary phase incorporation into metallic sheets by friction stir processing in developing surface composites

Sunil

2016

Int J Mech Mater Eng

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Friction stir processing (FSP) is a solid-state processing method, which recently gained wide popularity to modify the microstructure of metallic surfaces and to produce surface composites. For the past decade, composites of different materials such as aluminum, copper, magnesium, titanium, and their alloys were successfully produced by FSP. The amount of secondary phase that is dispersed at the surface of the workpiece during FSP and the level of dispersion depend on many factors such as tool design, processing parameters, and type of material. Recently, the method of secondary phase incorporation into the surface metals was also considered as an important factor in developing surface composites by FSP. A few strategies such as groove filling, holes filling, sandwich method, direct method, and surface coating followed by FSP methods have been developed as promising ways of secondary phase incorporation into the surface of the materials during FSP. The aim of this review paper is to give a comprehensive summary of different methods developed to disperse the secondary phase into the surface of the workpiece during FSP to produce surface composites. The strategies have been explained, compared, and discussed to suggest an appropriate method based on the requirement to adopt in developing surface composites.

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Tribological Behavior of A356/Al2O3 Surface Nanocomposite Prepared by Friction Stir Processing

Cited by 66 publications

References 27 publications

Surface Hybrid Nanocomposite Produced by Friction Stir Processing: Microstructural Evolution, Mechanical Properties and Tribological Behavior

Surface Hybrid Nanocomposite Produced by Friction Stir Processing: Microstructural Evolution, Mechanical Properties and Tribological Behavior

The effect of powder addition manner and volume fraction of reinforcement on tribological behavior of Al7075/B₄C surface composite produced by friction stir processing

Different strategies of secondary phase incorporation into metallic sheets by friction stir processing in developing surface composites

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Tribological Behavior of A356/Al2O3 Surface Nanocomposite Prepared by Friction Stir Processing

Cited by 66 publications

References 27 publications

Surface Hybrid Nanocomposite Produced by Friction Stir Processing: Microstructural Evolution, Mechanical Properties and Tribological Behavior

Surface Hybrid Nanocomposite Produced by Friction Stir Processing: Microstructural Evolution, Mechanical Properties and Tribological Behavior

The effect of powder addition manner and volume fraction of reinforcement on tribological behavior of Al7075/B4C surface composite produced by friction stir processing

Different strategies of secondary phase incorporation into metallic sheets by friction stir processing in developing surface composites

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The effect of powder addition manner and volume fraction of reinforcement on tribological behavior of Al7075/B₄C surface composite produced by friction stir processing