Microstructure and some mechanical properties of fly ash particulate reinforced AA6061 aluminum alloy composites prepared by compocasting

Selvam, J. David Raja; Smart, D.S. Robinson; Dinaharan, I.

doi:10.1016/j.matdes.2013.01.053

Cited by 183 publications

(29 citation statements)

References 34 publications

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“…The brittle fracture becomes evident macroscopically, and ductile fracture is seen microscopically. The dimple sizes reduce due to the refinement of grains in the matrix with the addition of SiC and BLA particles, and in turn, result in decreased ductility [51]. The fracture in composite material may be because of cracks initiated, which subsequently proceeds to the debonded interface among the matrix and ceramic particles.…”

Section: Fractography and Fracture Analysismentioning

confidence: 99%

Characterization of Al-4.5%Cu alloy with the addition of silicon carbide and bamboo leaf ash

Kumar¹,

Birru²

2018

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The stir-casting method was employed to study the effect of adding silicon carbide and the bamboo leaf ash into the Al-4.5wt.%Cu alloy. The standard procedure was followed in analysing the mechanical behaviour of the fabricated composites on parameters such as density, tensile strength, and hardness. Optical microscope, scanning electron microscope with energy dispersive analysis of X-rays, and X-ray diffraction analysis helped in studying the microstructure of the composites. The study reveals that the reinforcement particles in the matrix alloy were distributed nearly homogeneously, and with a clear interface. The X-ray diffraction patterns indicate the presence of silicon carbide and bamboo leaf ash without an intermetallic reaction. The density of the hybrid composites reduces with the addition of bamboo leaf ash, but porosity increases. The fabricated composites gain in tensile strength and hardness as the reinforcement particles are added, but elongation was decreased.

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Section: Fractography and Fracture Analysismentioning

confidence: 99%

Characterization of Al-4.5%Cu alloy with the addition of silicon carbide and bamboo leaf ash

Kumar¹,

Birru²

2018

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“…Silicon carbide (SiC) and alumina (Al 2 O 3 ) are extensively used as particulate reinforcements to prepare AMCs over three decades since the advent of AMCs. The development of various production methods made it possible to incorporate several potential ceramic particles such as fly ash [4], SiO 2 [5], TiO 2 [6], AlN [7], Si 3 N 4 [8], TiC [9], B 4 C [10], TiB 2 [11] and ZrB 2 [12] to prepare AMCs.…”

Section: Introductionmentioning

confidence: 99%

Production and characterization of titanium carbide particulate reinforced AA6061 aluminum alloy composites using stir casting

Moses¹,

Dinaharan²,

Sekhar³

2016

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Stir casting is an economical method to produce aluminum matrix composites. In the present work, composites of aluminum alloy AA6061 reinforced with various amounts (0, 5, 10 and 15 wt.%) of TiC particles were prepared by stir casting technique. X-ray diffraction patterns of the prepared composites clearly revealed the incorporation of TiC particles without the presence of any other compounds. The microstructures of the composites were studied using optical and scanning electron microscopy. It was observed that the TiC particles distributed all over the composite and properly bonded to the matrix alloy. Local clusters of TiC particles were also seen in a few places. The result shows that the reinforcement of TiC particles enhances the microhardness, ultimate tensile strength and wear resistance of the composite. The details of fracture morphology, worn surface, and wear debris are also presented in this paper. K e y w o r d s : metal matrix composites, stir casting, microstructure, mechanical properties

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“…The method of wear has been observed to be abrasive at room temperature and adhesion at high temperatures [13]. Significant improvement in the mechanical properties of Al-FA composites has been obtained with the increase in FA content by Selvam et al [14] and Rohtagi et al [15] Furthermore, improvement of wear resistance of Al alloy with addition of FA has been reported by Rohtagi et al [15] Suresh et al [16] have studied that the addition of FA up to 10% improves hardness, ultimate tensile strength, and elongation compared with untreated Al-Si base alloy. The present work aims to study the influence of fly ash addition on microstructure, mechanical properties, and wear resistance of Al-FA composites.…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties and wear behavior of fly ash particle reinforced Al matrix composites

Desai

Paul

Mallik

2020

Mater. Res. Express

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In this study, aluminum-based metal matrix composites containing 5, 10, 15, 20, and 25% fly ash particles by weight have been fabricated using a stir casting route. Microstructural observations under an optical microscope suggest that fly ash particles in the cast composites are uniformly distributed throughout the matrix. The mechanical properties such as tensile strength and hardness of the aluminum alloy have enhanced significantly with the addition of fly ash. Wear behavior of base metal and its composite have been studied in dry sliding conditions using a pin-on-disc tribometer. Wear tests have been conducted at three different loads of 9. 81, 19.62, and 29.43 N at a constant sliding velocity of 1.3 m s −1 . Microstructural observations of worn surfaces and wear debris suggest that wear mechanism in base metal is controlled by adhesion, whereas that for composites is abrasive. The least wear rate has been obtained in Al-10% Fly ash composite. The Al-10% Fly ash is observed to possess an optimum level of mechanical properties and wear behavior.

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Microstructure and some mechanical properties of fly ash particulate reinforced AA6061 aluminum alloy composites prepared by compocasting

Cited by 183 publications

References 34 publications

Characterization of Al-4.5%Cu alloy with the addition of silicon carbide and bamboo leaf ash

Characterization of Al-4.5%Cu alloy with the addition of silicon carbide and bamboo leaf ash

Production and characterization of titanium carbide particulate reinforced AA6061 aluminum alloy composites using stir casting

Mechanical properties and wear behavior of fly ash particle reinforced Al matrix composites

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