Particle incorporation by melt stirring for the production of metal-matrix composites

Hanumanth, G.S.; Irons, G. A.

doi:10.1007/bf01151680

Cited by 86 publications

(43 citation statements)

References 6 publications

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“…12,14,15) The volume ratio of particles in clusters or agglomerates, k, is process and materials dependent. [15][16][17] For the SiC/A356 alloy system, k varies from 0.18 16) to 0.65. 17) In Ref.…”

Section: Particle Clustering and Agglomerationmentioning

confidence: 99%

Numerical Modeling of Carbide Redistribution during Centrifugal Casting of HSS Shell Rolls

Nastac

2014

ISIJ Int.

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A numerical model was further developed and applied in this work to understand and optimize the carbide redistribution during centrifugal casting process used in manufacturing of high speed steel (HSS) shell rolls. This model will help to further understand the complex solidification behavior of the HSS roll. Performance of the HSS roll requires proper formation and distribution of the VC, (V, Mo)C, and Mo2C carbides as well as the eutectic carbides, which is shown by dimensional analysis to be dominated by centrifugal buoyancy effects and solidification and carbide kinetics. The model includes a rheology-viscosity sub-model to address the interference between different moving particles or classes of particles of different sizes. The carbide redistribution model was successfully validated against experimental work. A parametric study was performed to determine the key variables that influence the distribution of the VC, (V, Mo)C, and Mo2C carbides and refine the HSS microstructure including the wash (coating) material, superheat, C content of the shell material and mold temperature.

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Section: Particle Clustering and Agglomerationmentioning

confidence: 99%

Numerical Modeling of Carbide Redistribution during Centrifugal Casting of HSS Shell Rolls

Nastac

2014

ISIJ Int.

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“…Also, applying non-expensive methods such as stir casting as a main way of MMCs--particulate reinforced fabrication method can lead to production of a wide range of product forms, making them relatively inexpensive compared with the composites that are reinforced with continuous fibres, whiskers or filaments [21]. Aluminium matrix composites have obtained a great interest, because they combine high corrosion resistance, low weight, low cost, high specific strength and perfect wear resistance [22][23][24][25]. Aluminium matrix composites have been investigated by many researchers [26][27][28][29][30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

Investigation of discontinuously reinforced aluminium metal matrix composite fabricated by two different micron ceramic reinforcements (ZrSiO;4, B;4C): Comparative study

Shirvanimoghaddam¹,

Akbari²,

Abdizadeh³

et al. 2016

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“…Furthermore, in MMCs production with melt stirring method, increased Reinforcement Volume Ratio (RVR) and decreased particle size resulted more difficult production process and increased porosity and particle agglomeration 3,4 . Many studies have been conducted on the distribution of reinforcement elements inside the composites and their effect on microstructure, porosity, hardness, abrasion behavior and rupture strength as well as the effect of stirring time and speed [5][6][7][8][9][10][11][12][13][14][15][16] . In this study, the effect of RVR on composite microstructure and thermal properties were examined in 5%, 10% and 15% MgO reinforced composites produced by melt stirring method.…”

Section: Introductionmentioning

confidence: 99%

The effect of reinforcement volume ratio on porosity and thermal conductivity in Al-Mgo composites

2012

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In this study, the effects of reinforcement volume ratios (RVR) on composite structure and thermal conductivity were examined in Al-MgO reinforced metal matrix composites (MMCs) of 5%, 10% and 15% RVR produced by melt stirring. In the production of composites, EN AW 1050A aluminum alloy was used as the matrix material and MgO powders with particle size of -105 µm were used as the reinforcement material. For every composite specimen was produced at 500 rev/min stirring speed, at 750 °C liquid matrix temperature and 4 minutes stirring time. Composite samples were cooled under normal atmosphere. Then, microstructures of the samples were determined and evaluated by using Scanning Electron Microscope (SEM) and Energy Dispersive X-ray Spectroscopy (EDS) analysis. In general, it was observed that the reinforcement exhibited a homogeneous distribution. Furthermore, it was determined that the increase in the RVR increased porosity. From the Scanning Electron Microscope images, a thermal Ansys model was generated to determine effective thermal conductivity. Effective thermal conductivity of Al-MgO composites increased with the decrease in reinforcement volume ratio.

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Particle incorporation by melt stirring for the production of metal-matrix composites

Cited by 86 publications

References 6 publications

Numerical Modeling of Carbide Redistribution during Centrifugal Casting of HSS Shell Rolls

Numerical Modeling of Carbide Redistribution during Centrifugal Casting of HSS Shell Rolls

Investigation of discontinuously reinforced aluminium metal matrix composite fabricated by two different micron ceramic reinforcements (ZrSiO;4, B;4C): Comparative study

The effect of reinforcement volume ratio on porosity and thermal conductivity in Al-Mgo composites

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