Evaluation of physical and mechanical properties of AZ91D/SiC composites by two step stir casting process

Aravindan, S.; Rao, P. Venkateswara; Ponappa, K.

doi:10.1016/j.jma.2014.12.008

Cited by 168 publications

(49 citation statements)

References 23 publications

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“…By further increasing the weight fraction of TiB 2 to 15%, the hardness value reaches a maximum of 58.56 HV. The interface between the matrix and the reinforcement phase plays a major role in enhancing their mechanical and tribological properties [31,32]. In the present study, the interface between the Mg-Cu matrix and the reinforcement is good, as shown in Figs.…”

Section: Microstructure Analysis Of Mg-cu Alloy-tib 2 Compositessupporting

confidence: 58%

“…But, the compressive strength of the composite gradually increases with the increase in weight percentage of TiB 2 . It is well known that the strengthening effect of the composite depends on (a) load-bearing effects, due to the presence of reinforcements, and (b) Hall-Petch effect, due to the grain size refinement and the generation of geometrically necessary dislocations to accommodate thermal and elastic modulus mismatch between the matrix and reinforcements [31]. The reason for increasing compressive strength is that the work hardening occurs, when the composite is strained.…”

Section: Mechanical Properties Of Mg-cu Alloy-tib 2 Compositesmentioning

confidence: 99%

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Investigations on microstructure and mechanical properties of Mg-5wt.% Cu-TiB2 composites produced via powder metallurgy route

Stalin¹,

Ravichandran²,

Mohanavel

et al. 2020

J min metall B Metall

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Magnesium alloy matrix composite reinforced with constant weight fraction of 5% Cu and various weight fractions of (0%, 5%, 10%, 15%) titanium diboride (TiB 2) fabricated by Powder Metallurgy route. In this work, the mechanical properties like hardness, impact strength, compression strength, and wear rate of the Mg-Cu alloy and fabricated composites were investigated. The results showed that the addition of weight percentage of 15% TiB 2 increased the hardness value about 58.56 HV, due to better bonding between the Mg-Cu and TiB 2. Further, impact and compressive strengths improved, as the weight percentage of TiB 2 increased. Uniform distribution of reinforced particles enhanced the impact strength and the work hardening effect improved the compression strength. Moreover, the wear rate decreased about 0.0112 mg by the addition of weight percentage of 15% TiB 2. X-ray diffraction (XRD) analysis was carried out for each composition. Optical microscopy, scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) tests were conducted to study the characterization of the base alloy and the prepared new composite.

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Section: Microstructure Analysis Of Mg-cu Alloy-tib 2 Compositessupporting

confidence: 58%

Section: Mechanical Properties Of Mg-cu Alloy-tib 2 Compositesmentioning

confidence: 99%

Investigations on microstructure and mechanical properties of Mg-5wt.% Cu-TiB2 composites produced via powder metallurgy route

Stalin¹,

Ravichandran²,

Mohanavel

et al. 2020

J min metall B Metall

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“…The proper milling parameters make the TiO 2 particles to disperse uniformly in the magnesium matrix. However the different density of matrix and reinforcement particles leads to increased porosity with the increase in weight percentage of reinforcement [17]. The size of the TiO 2 particle is less than the matrix particle size.…”

Section: Effect Of Tio 2 On the Density And Porosity Of Mg Matrix Commentioning

confidence: 99%

Characterization and Properties of Mg–TiO$_2$ Composites Produced $via$ Ball Milling and Powder Metallurgy

Stalin¹,

Vidhya²,

Ravichandran³

et al. 2020

Metallofiz. Noveishie Tekhnol.

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The new magnesium matrix composites reinforced with different weight fractions (0, 4, 8, 12) of TiO 2 particles are fabricated by powder metallurgy. The ball milled powders are compacted and sintered for further mechanical and characterization studies. With the increasing weight percentage of TiO 2 particles, the particles gradually show more homogeneous distribution in the matrix. Compared with the matrix, the compressive strength of the composites is improved. With the increasing TiO 2 contents from 0 to 12% wt., the ultimate compressive strength increases from 82 to 158 MPa, respectively, while the corresponding strain decreases. The improvement of the ultimate compressive strength and hardness of the Mg-TiO 2 composites is due to the homogeneous microstructure of TiO 2 in Mg matrix. Energy dispersive X-ray spectroscopy and scanning electron microscopy are used to study the morphology and distribution of reinforcements in the matrix material. An identical distribution of TiO 2 parti

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“…The slurry can be ensured molten throughout the pouring by this process. Die is preheated in order to attain uniform solidification [18]. If the die is not preheated uneven solidification takes place and crystalline structure and boundary formed will not be as desired.…”

Section: Preparatory Functionsmentioning

confidence: 99%

Fabrication Analysis of Aluminium (Al-2024) and Tungsten Carbide (WC) Metal Matrix Composite by in-Situ Method

Abhijith¹,

M²

2016

IJERT

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In this present investigation, aluminium (Al 2024) as base matrix metal and tungsten carbide (WC) as particulate reinforcement is fabricated by insitu casting method. Tungsten Carbide (WC) being one of the hardest ceramic particle can enhance the mechanical properties of aluminium by uniform blending. Experimental researches have largely stressed on studying contribution of these particulates in improving the properties of the MMC. The even distribution of Tungsten Carbide in the Al matrix has identified as being crucial for improved properties. In order to achieve uniformity fabrication of MMCs was done by stircasting process. This paper concentrates on the stir casting process, process and material parameters, & preparation of aluminium Matrix Composite material by using aluminium as matrix form and Tungsten Carbide as reinforcement. Mechanical properties like wearness and micro hardness were studied for aluminium 2024 alloy and stir casted MMC (Al-WC). From the results, it was found that the microhardness and the wear properties of the prepared metal matrix composite improved.

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Evaluation of physical and mechanical properties of AZ91D/SiC composites by two step stir casting process

Cited by 168 publications

References 23 publications

Investigations on microstructure and mechanical properties of Mg-5wt.% Cu-TiB2 composites produced via powder metallurgy route

Investigations on microstructure and mechanical properties of Mg-5wt.% Cu-TiB2 composites produced via powder metallurgy route

Characterization and Properties of Mg–TiO$_2$ Composites Produced $via$ Ball Milling and Powder Metallurgy

Fabrication Analysis of Aluminium (Al-2024) and Tungsten Carbide (WC) Metal Matrix Composite by in-Situ Method

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