Tribological behavior of Al-Cu alloys and innovative Al-Cu metal matrix composite fabricated using stir-casting technique

Raju, P. Vijaya Kumar; Rajesh, S.; Rao, J. Babu; Bhargava, N.R.M.R.

doi:10.1016/j.matpr.2017.11.161

Cited by 24 publications

(7 citation statements)

References 28 publications

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“…15) was observed, when the load was increased from 15 N to 20 N. The strong adhesion and bond between the sintering additive SiC and the ceramic matrix of TiB 2 could be liable for the creation of phases (TiC) that limit the wear of the sample's surface, hence improving the wear resistance. A similar observation by [47] established that the inclusion of particles showed the morphology of minor scratch due to the creation of a strong bond with the matrix alloy. Murthy et al discovered that the addition of ZrO 2 to B 4 C ceramic matrix created in-situ ZrB 2 which consequently forms round pores of sub-micron size.…”

Section: Morphological Study Of the Worn Surfacesupporting

confidence: 60%

Effects of SiC on the Microstructure, Densification, Hardness and Wear Performance of TiB2 Ceramic Matrix Composite Consolidated Via Spark Plasma Sintering

et al. 2022

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Monolithic TiB 2 are known to have a good combination of densi cation and hardness which are sometimes useful but limited in application. However, their usage in service at elevated temperatures such as in power thermal plants, cutting tools, tribological purposes (cutting tools, mechanical seals, blast nozzles, and wheel dressing tools), etc leads to catastrophic failure. Hence, the introduction of sintering additives in the TiB 2 matrix has a high in uence on the improvement of its sinterability, and properties (fracture toughness, wear resistance etc.,) of the resulting composite needed to meets the requirement for various industrial applications. In this study, the in uence of SiC as sintering additives on the microstructure, densi cation, hardness and wear performance of TiB 2 ceramic was observed. Hence, TiB 2, TiB 2 -10wt%SiC and TiB 2 -20wt%SiC were sintered at 1850 o C for 10 minutes under 50 MPa. The impacts of SiC on the TiB 2 were observed to improve the microstructure correspondingly improving densi cation and mechanical properties, most especially with the composites with 20wt% SiC. Combined excellent densi cation, hardness and fracture toughness of 99.5%, 25.5 GPa, 4.5 MPa.m 1/2 were achieved respectively for TiB 2 -20wt%SiC. Diverse in-situ phase and microstructural alterations were detected in the sintered composites, and it was discovered that the in-situ phase of TiC serves as the contributing factor to the enhanced features of the composites. Moreover, the coe cient of friction and wear performance outcomes of the synthesized composites described a decrease in the coe cient with an enhanced wear resistance via the increasing SiC particulate, although the application of the load from 10 N-20 N increased the wear rates.

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Section: Morphological Study Of the Worn Surfacesupporting

confidence: 60%

Effects of SiC on the Microstructure, Densification, Hardness and Wear Performance of TiB2 Ceramic Matrix Composite Consolidated Via Spark Plasma Sintering

et al. 2022

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“…These microvoids were formed due to the elongation of voids that filled up the available spaces to form dimples, as shown in the fractured surface. The fractography analysis further revealed that the maximum PHT and minimum VF resulted in adequate consolidation and high strength recovery of the composite material [ 18 ]. The fracture surface analysis of the optimal sample exhibited conical equiaxed dimples and the fine topography of the fracture surface in the absence of microcracks.…”

Section: Resultsmentioning

confidence: 99%

“…In other studies, the addition of copper oxide (CuO) reinforcement reduced the energy consumption by changing the preheating temperature to 550 °C and preheating time to 3 h for optimum mechanical properties [ 15 , 16 ] and reduced melting point [ 17 ]. The tribological properties are considered to be one of the major factors controlling the performance and mechanical properties of composites [ 18 , 19 ]. A good balance between the mechanical properties, thermal properties, and production costs are the key performance indicators for the successful development of the hybrid composites.…”

Section: Introductionmentioning

confidence: 99%

Production of Aluminum AA6061 Hybrid Nanocomposite from Waste Metal Using Hot Extrusion Process: Strength Performance and Prediction by RSM and Random Forest

et al. 2021

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To date, various studies have analysed the effects of reinforced ceramic on the properties of AA6061 recycled aluminum alloy chips, such as the tensile strength and fractography. However, a comprehensive analysis of the properties of hybrid composite with the addition of nano-silica oxide and nano-copper oxide reinforcements is still very limited. Therefore, this study aimed to optimise the factors comprising the preheating temperature (PHT), preheating time (PHti), and volume fraction (VF) of reinforcements then determine their impacts on the physical and mechanical properties of the recycled solid-state extruded composite aluminum chips. A total of 45 specimens were fabricated through the hot extrusion technique. The response surface methodology (RSM) was employed to study the optimisation at a PHT range of 450–550 °C with PHti of 1–3 h and VF of 1–3 vol% for both reinforcements (SiO2 and CuO). Moreover, a random forest (RF) model was developed to optimize the model based on a metaheuristic method to improve the model performance. Based on the experimental results the RF model achieve better results than response surface methodology (RSM). The functional quadratic regression is curvature and the tested variable shows stable close data of the mean 0 and α2. Based on the Pareto analysis, the PHT and VF were key variables that significantly affected the UTS, microhardness, and density of the product. The maximum properties were achieved at an optimum PHT, PHti, and VF of 541 °C, 2.25 h, 1 vol% SiO2 and 2.13 vol% CuO, respectively. Furthermore, the morphological results of the tensile fractured surface revealed the homogenous distribution of nano-reinforced CuO and SiO2 particles in the specimens’ structure.

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“…Despite their wide spread use the high cost incurred due to the addition of expensive metal reinforcements such as Cu, W, Ti, Ni and Zr etc. keeps their potential undermined [7][8][9][10][11]. The addition of bio-degradable and eco-friendly reinforcements either partially or fully not only reduces the incorporation of hazardous metals but also reduces the production cost of the composite materials.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Mechanical, Wear, and Corrosion Properties of Al–BN–SiC–RHA Hybrid Composites Synthesized Through Powder Metallurgy Process

Raghav¹,

Krishnan²,

Nagarajan³

et al. 2022

Metallofiz. Noveishie Tekhnol.

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Present study explores the effect of Rice Husk Ash (RHA) reinforcements in mechanically alloyed Al-BN-SiC hybrid composites through experimental characterization. The physical, tribological and corrosion resistance properties of Al-BN-SiC-RHA hybrid composites are studied. In the outset the composite pellets are synthesized using powder metallurgy process. The homogenously amalgamated composite powders are then squeezed together to form multiple green composite pellets each measuring 8 mm in diameter using a hydraulic press at a pressure of 500 MPa. The Al-BN-SiC-RHA hybrid composites are characterized using FE-SEM, EDS, and XRD analysis for facilitating the studies on the microstructural as well as the elemental properties. Microhardness and compressive strength of the Al-5BN-5SiC-5RHA hybrid composites is found to improve by 6 and 13.6% respectively compared to those of Al-5BN-5SiC hybrid composites. The RHA reinforced hybrid composites have also experienced reduction in density and an enhancement in the wear resistance of the composite materials while compared to those for their non-RHA counterparts. The electrochemical corrosion analysis of the Al-5BN-5SiC-5RHA hybrid composites also confirms that the Al-5BN-5SiC-5RHA hybrid composites have better corrosion resistance.

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Tribological behavior of Al-Cu alloys and innovative Al-Cu metal matrix composite fabricated using stir-casting technique

Cited by 24 publications

References 28 publications

Effects of SiC on the Microstructure, Densification, Hardness and Wear Performance of TiB2 Ceramic Matrix Composite Consolidated Via Spark Plasma Sintering

Effects of SiC on the Microstructure, Densification, Hardness and Wear Performance of TiB2 Ceramic Matrix Composite Consolidated Via Spark Plasma Sintering

Production of Aluminum AA6061 Hybrid Nanocomposite from Waste Metal Using Hot Extrusion Process: Strength Performance and Prediction by RSM and Random Forest

Investigation of Mechanical, Wear, and Corrosion Properties of Al–BN–SiC–RHA Hybrid Composites Synthesized Through Powder Metallurgy Process

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