A comprehensive review on mechanical properties of Al-B4C stir casting fabricated composite

Nirala, Akhileshwar; Soren, Shatrughan; Kumar, Navneet; Kaushal, D. R.

doi:10.1016/j.matpr.2019.09.172

Cited by 30 publications

(13 citation statements)

References 20 publications

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“…However, to meet the application requirements, the material must be properly strengthened. Therefore, ceramic particles are introduced into the metal matrix to improve such composite properties as hardness, strength, wear resistance, and stiffness [ 1 ]. The commonly used ceramic particles are B 4 C, SiC, TiO 2 , TiC, TiB 2 , Al 2 O 3 , WC, ZrC, ZrO 2 , and graphite [ 2 , 3 , 4 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Holding Time on Densification, Microstructure and Selected Properties of Spark Plasma Sintered AA7075-B4C Composites

et al. 2022

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The paper presents the effect of the holding time, varying between 1 min 15 s and 10 min, on the microstructure evolution and development of selected properties of spark plasma sintered AA7075-based composites reinforced with 3, 5 and 10 wt% sub-micro B4C powder. The sintering temperature and the compaction pressure were 500 °C and 80 MPa, respectively. Composites with a near full density of 96–97% were obtained. Microstructure studies were performed employing the techniques of light microscopy and scanning electron microscopy, along with an analysis of the chemical composition in micro-areas. Additionally, the phase composition was investigated by means of X-ray diffraction. In addition, hardness and flexural strength tests were performed. It was found that the holding time did not significantly influence the microstructures of the examined materials nor the hardness or flexural strength. The sintered composites had a fine-grained microstructure with a strengthening phase located at the grain boundaries. As a result of the spark plasma sintering process, fine precipitates of intermetallic phases were also observed in the aluminum grains, suggesting partial supersaturation, which occurred during fast cooling.

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Section: Introductionmentioning

confidence: 99%

Effect of Holding Time on Densification, Microstructure and Selected Properties of Spark Plasma Sintered AA7075-B4C Composites

et al. 2022

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“…Substituting the base aluminum alloys with particulate composites has the advantage of improving the mechanical strength parameters without seriously disturbing the thermal and electrical conductivities and other properties A [4][5][6][7]. The common reinforcement particles used in AMMCs are graphite, SiO 2 , SiC, Al 2 O 3 and B 4 C used in small percentages of about 2 to 8% [8][9][10][11][12]. Some researchers have used hybrid reinforcement, i.e., using two types of particulates [13][14], while some others have employed dual or treble sizes of same particulate [15][16].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Mechanical Properties of Aluminum Cast Alloy A356 reinforced with Dual-Size B4C Particles

Chandrashekar¹,

Annaiah²,

Chandrashekar³

2021

Frattura Ed Integrità Strutturale

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The paper details the studies carried out on a dual-size particulate composite prepared by stir casting using A 356 aluminum alloy and B4C powders. Three composite compositions, viz., A356 plus 2% B4C (44µm size and 105µm size in 1:1 ratio), 4% B4C (3:1 ratio), and 6% B4C (1:3 ratio) were cast in finger molds, from which test specimens were prepared for hardness and tensile tests as well as for metallography. Vickers hardness tests, tensile tests and microstructure analysis using an optical microscope were conducted. The results obtained indicated that the B4C particles were evenly distributed in the alloy matrix. EDS also revealed the presence of B4C in all the three composites. In general, the hardness and tensile strengths increased with increase in concentration B4C powders. While the increase in hardness was increases less than 15%, there was significant increase (more than 35 %) in tensile strength. However, the ductility represented by % elongation, which was already very low in A 356 cast alloy (24.2%,), further decreased in composites. Tensile fractography results shows inter crystalline fracture where the breakage in the B4C particle instead of deboning were observed.

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“…Different techniques have been proposed and implemented in improving the metallurgical properties of aluminium alloys [6,[19][20][21]. The choice of modification technique used is selected based on the desired properties and area of application.…”

Section: Introductionmentioning

confidence: 99%

“…Stir casting is widely accepted as a promising technique for the manufacture of metal matrix composites. Its advantages over several other techniques are the easy mode of operation, flexibility, simplicity, applicability to large quantity production and cost-effective advantages [19,20,[26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Influence of Heat Treatment on the Corrosion Behaviour of Aluminium Silver Nano Particle/Calcium Carbonate Composite

et al. 2021

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Corrosion is one of the leading sources of material failure and deterioration in society. Scholars have proposed different techniques to mitigate corrosion. This research study explores and validates one of these techniques. An Aluminium metal matrix (AMC) was produced using the stir casting method with various weight percentages of AgNp and CaCO3 reinforcements. Heat treatment was performed on the samples to enhance the metallurgical and corrosion properties of the materials. The corrosion rate of the AMC samples was tested in different corrosive media (neutral and acidic) with different concentrations using the weight loss analysis technique for several days. It was observed that the corrosion rate of the AMC relies on the nature of the electrolyte and the percentage concentration of this electrolyte. The heat treatment improves the corrosion resistance of the AMC samples. In addition, an increase in the % weight composition of the reinforcement (AgNp + CaCO3) results in a reduction in the corrosion rate of the AMC in both corrosive media. The optimal %weight composition was found to be 4% for the hybrid reinforcement of AgNp + CaCO3 and 6% for the CaCO3 reinforcement in both the untreated and heat-treated samples.

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A comprehensive review on mechanical properties of Al-B4C stir casting fabricated composite

Cited by 30 publications

References 20 publications

Effect of Holding Time on Densification, Microstructure and Selected Properties of Spark Plasma Sintered AA7075-B4C Composites

Effect of Holding Time on Densification, Microstructure and Selected Properties of Spark Plasma Sintered AA7075-B4C Composites

Microstructure and Mechanical Properties of Aluminum Cast Alloy A356 reinforced with Dual-Size B4C Particles

Influence of Heat Treatment on the Corrosion Behaviour of Aluminium Silver Nano Particle/Calcium Carbonate Composite

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