Characterization and Properties of Silicon Carbide Reinforced Ni-10Co-5Cr (Superalloy) Matrix Composite Produced Via Powder Metallurgy Route

Veerappan, G.; Ravichandran, M.; Meignanamoorthy, M.; Mohanavel, V.

doi:10.1007/s12633-020-00455-9

Cited by 33 publications

(5 citation statements)

References 40 publications

(36 reference statements)

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“…The powder metallurgy method (P/M) is a metal forming process which involves mixing elemental or alloy powders to form MMCs [ 8 , 15 , 16 ]. The P/M method is often preferred due to its advantages such as high production speeds, low cost, the manufacturing of complex shapes, low material loss and high melting temperature [ 17 , 18 , 19 , 20 , 21 , 22 ]. In addition, ceramic reinforcements have been attracting attention due to their high melting temperature, hardness and corrosion resistance.…”

Section: Introductionmentioning

confidence: 99%

Tribological Aspects, Optimization and Analysis of Cu-B-CrC Composites Fabricated by Powder Metallurgy

et al. 2021

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Tribological properties of engineering components are a key issue due to their effect on the operational performance factors such as wear, surface characteristics, service life and in situ behavior. Thus, for better component quality, process parameters have major importance, especially for metal matrix composites (MMCs), which are a special class of materials used in a wide range of engineering applications including but not limited to structural, automotive and aeronautics. This paper deals with the tribological behavior of Cu-B-CrC composites (Cu-main matrix, B-CrC-reinforcement by 0, 2.5, 5 and 7.5 wt.%). The tribological characteristics investigated in this study are the coefficient of friction, wear rate and weight loss. For this purpose, four levels of sliding distance (1000, 1500, 2000 and 2500 m) and four levels of applied load (10, 15, 20 and 25 N) were used. In addition, two levels of sliding velocity (1 and 1.5 m/s), two levels of sintering time (1 and 2 h) and two sintering temperatures (1000 and 1050 °C) were used. Taguchi’s L16 orthogonal array was used to statistically analyze the aforementioned input parameters and to determine their best levels which give the desired values for the analyzed tribological characteristics. The results were analyzed by statistical analysis, optimization and 3D surface plots. Accordingly, it was determined that the most effective factor for wear rate, weight loss and friction coefficients is the contribution rate. According to signal-to-noise ratios, optimum solutions can be sorted as: the highest levels of parameters except for applied load and reinforcement ratio (2500 m, 10 N, 1.5 m/s, 2 h, 1050 °C and 0 wt.%) for wear rate, certain levels of all parameters (1000 m, 10 N, 1.5 m/s, 2 h, 1050 °C and 2.5 wt.%) for weight loss and 1000 m, 15 N, 1 m/s, 1 h, 1000 °C and 0 wt.% for the coefficient of friction. The comprehensive analysis of findings has practical significance and provides valuable information for a composite material from the production phase to the actual working conditions.

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Section: Introductionmentioning

confidence: 99%

Tribological Aspects, Optimization and Analysis of Cu-B-CrC Composites Fabricated by Powder Metallurgy

et al. 2021

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“…The required weight proportion of Cu-20%Al -4% Ni and SiC were mixed using ball milling for 1 hour. Toluene was mixed with powder as lubricant and cold fusion of different powder was achieved prior to sintering because of using ball to powder ratio as 10:1 [15].…”

Section: Methodsmentioning

confidence: 99%

Experimental Investigations on the Mechanical Properties, Microstructure and Corrosion Resistance of Cu-20Al-4Ni/SiC Composites Synthesized Using Powder Metallurgy

Azaath

Natarajan

Veerappan³

et al. 2021

Preprint

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The present investigation pertains to synthesize aluminium bronze silicon carbide composite by powder metallurgy route. Three various weight percentages of silicon carbide (0, 2, 4 & 6) were reinforced with aluminium bronze matrix (Cu-20%Al-4%Ni) and the hydraulic press was used to prepare the green compact. This compact was heated at two different temperatures such as 6500C and 7500C using tubular furnace. The effect of silicon carbide on density, sinterability, compression test and hardness test was analyzed. The scanning electron microscope and energy dispersive spectroscopy were used to confirm the presence of alloying elements. The results showed that the sinterability and density were reduced with an increase in silicon carbide content. The composite reinforced with 6%SiC exhibited lowest compressive strength among other composites. The 4 wt.% SiC reinforced composites sintered at 7500C has highest corrosion resistance.

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“…The increase in yield strength and ultimate strength was due to the following reasons: (a) Orowan strengthening mechanism, (b) uniform dispersal of reinforcement and (c) significant grain refinement. The decrease in elongation with an increase in reinforcement can be attributed to the: (i) irregular interfacial bonding strength between the fillers and matrix material and (ii) irregular distribution of the fillers with matrix and poor plasticity [33,34]. Figure 6 shows the impact of the quantity of BN particles on the micro hardness and impact strength of the AA7075-BN composites.…”

Section: Effect Of Bn Particles On Tensile Strengthmentioning

confidence: 99%

Synthesis, mechanical and tribological behaviours of boron nitride reinforced AA7075 composites produced by stir casting technique

Kumar,

Ravichandran,

Alagarsamy

2024

Surf. Topogr.: Metrol. Prop.

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This experimental investigation focused on synthesis of aluminium 7075-boron nitride (BN) composites (AA7075-BN), using stir casting technique. Four various proportions of BN of 0, 4, 8 and 12 wt.% were used for the production of the composites. Scanning electron microscopy (SEM) was used to study the microstructure of the prepared composites. Using a pin-on-disc equipment, wear test was performed to analyse the tribological characteristics of the as-casted composites. The wear rate (WR) and the co-efficient of friction (COF) were determined by altering the input parameters, such as reinforcement (R), applied load (L), sliding velocity (V) and sliding distance (D). A grey relational technique (GRT) was applied to determine the appropriate conditions of parameters and showed low WR and COF for the composites. From the experimental results obtained, the least density of the composite was 2.70 g/cm 3 for AA 7075-12 wt.% BN. The mechanical properties of the composites were significantly improved. The highest tensile strength of 210 MPa was obtained from the same AA 7075-12 wt.% BN. There was 26% of improvement in the tensile strength with 4 wt.% of BN reinforcement in AA7075 matrix. Finally, the worn surface morphology confirmed plough and furrow formations on the AA 7075- 4wt.% BN and AA 7075-8 wt.% BN composites, respectively. Therefore, the applications of the various composites depend on their responses to the properties, as studied.

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Characterization and Properties of Silicon Carbide Reinforced Ni-10Co-5Cr (Superalloy) Matrix Composite Produced Via Powder Metallurgy Route

Cited by 33 publications

References 40 publications

Tribological Aspects, Optimization and Analysis of Cu-B-CrC Composites Fabricated by Powder Metallurgy

Tribological Aspects, Optimization and Analysis of Cu-B-CrC Composites Fabricated by Powder Metallurgy

Experimental Investigations on the Mechanical Properties, Microstructure and Corrosion Resistance of Cu-20Al-4Ni/SiC Composites Synthesized Using Powder Metallurgy

Synthesis, mechanical and tribological behaviours of boron nitride reinforced AA7075 composites produced by stir casting technique

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