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Showing 1 to 20 of 33 for “"Metal Matrix Composite"”.
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Additive Manufacturing of Aluminium-Metal Matrix Composite developed through Mechanical Alloying
… research on utilising laser melting of Aluminium matrix composites in replacing specialised parts have been slow on the uptake. This has been attributed to the complexity of the laser melting process, metal/ceramic feedstock for the process and the reaction of the feedstock material to the laser. …
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Analysis of metal matrix composite structures using a micromechanical constitutive theory
… behavior of continuous-fiber-reinforced metal-matrix composite structures is examined using a micromechanical constitutive theory. Effective lamina and laminate constitutive relations based on the Aboudi micromechanics theory are presented. The inelastic matrix behavior is modeled by the …
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Modeling and Synthesis of a Piezoelectric Ceramic-Reinforced Metal Matrix Composite
… heat for any piezoelectric ceramic-reinforced metal matrix composite system. Specifically, barium titanate (BaTiO₃), lead titanate (PbTiO₃), and zinc oxide (ZnO) piezoelectric ceramics have been modeled as dispersed particles shaped as spheres, prolate spheroids, and discs within a host of …
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Characterisation of mechanically alloyed feedstock for laser-powder bed fusion: titanium silicon carbide metal matrix composite
… additive manufacturing (AM) industry. Herein, a metal matrix composite (MMC) with a titanium (Ti6Al4V) matrix reinforced with silicon carbide (SiC) is characterised. The research investigated an innovative and novel feedstock production process involving elements of mechanical alloying, tailored …
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Microstructure, Thermal Stability and Consolidation of Nanostructured and Ultrafine Structured Cu based Metal Matrix Composite and Alloy Powders Produced by High Energy Mechanical Milling
… nanostructured Cu and Cu-(2.5-10)vol.%Al2O3 composite balls/granules/powder particles were produced using two high energy mechanical milling (HEMM) routes respectively. The microstructural evolution of the as-milled Cu and Cu-Al2O3 composite balls/granules/powder particles produced using …
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Effect of rice husk silica reinforcement on recycled aa7075 aluminum chip matrix composite properties
… silica by rice husk (waste natural fibers) as metal matrix composite. This study approaches the solid state technique to investigate the effect of rice husk silica as a reinforcement agent in metal matrix composites as it has remarkably lower operation cost and energies compared to conventional …
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Moiré interferometry at high temperatures
… the plasma-etched technique. Gold was used as a metallic layer in this procedure. This method was demonstrated on a ceramic block, metal/matrix composite, and quartz. Thermal deformation of a quartz specimen was successfully measured in vacuum at 980 degrees Celsius, with the sensitivity of 417 …
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Synthesis and Characterization of Aluminum-Carbon Nanotube Composite by Cryogenic Milling
… processing to be used in cold spray. Al-CNT metal matrix composite powders with 5 wt.% and 10 wt.% CNT were synthesized by cryogenic milling of the blended component powders. Stearic acid was used as a process control agent to minimize agglomeration of the powders upon milling. CNT …
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Role of segregation and precipitates on interfacial strengthening mechanisms in metal matrix composites when subjected to thermo-mechanical processing
<p>Metal Matrix ceramic-reinforced composites are rapidly becoming strong candidates as structural materials for many high temperatures and aerospace applications. Metal matrix composites combine the ductile properties of the matrix with a brittle phase of the reinforcement, leading to high …
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In-situ Fiber Strength Distribution in NextelTM 610 Reinforced Aluminum Composites
MetPreg, a composite developed by Touchstone Research Laboratories (Tridelphia, WV), is an aluminum metal matrix composite reinforced by continuous NextelTM 610 alumina fibers. The question is, after processing, are the NextelTM fibers affected in any way that their strengthening contribution to …
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In-situ Synthesis of Piezoelectric-Reinforced Metal Matrix Composites
The in-situ synthesis of piezoelectric-reinforced metal matrix composites has been attempted with a variety of target matrix and reinforcement materials using reaction synthesis and high energy ball milling. Zinc oxide (ZnO) and barium titanate (BaTiO₃) have been successfully synthesized within …
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Mechanical response of unidirectional Boron/Aluminum under combined loading
… the response of unidirectional Boron/Aluminum metal matrix composite material under monotonic and cyclic loading conditions, namely: Iosipescu Shear, Off-Axis Tension and Compression. The characterization of the elastic and plastic response includes the elastic material properties, yielding and …
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Parametric modeling of bolted joints between components made of particulate composite materials
Particulate metal matrix composites (MMC) exhibit higher stiffness, strength and wear resistance compared to metal alloys. They exhibit superior compressive and buckling strength because of their higher plastic modulus. MMC's can operate at very higher temperatures than fiber-reinforced polymer …
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Codeformation Processing of Mechanically-Dissimilar Metal/Intermetallic Composites
… study of codeformation processing. A series of composites having mechanically-dissimilar phases were developed in which the high temperature flow behavior of the reinforcement material could be varied independent of the matrix. This was accomplished through the use of a series of intermetallic …
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Study of Pulse Electrochemical Micromachining using Cryogenically Treated Tungsten Microtools
… conductive engineering materials such as metals, semiconductors, and metal matrix composites. Absence of tool wear is a major advantage expected of PECMM. However, tools are often chemically corroded by certain electrolytes used in PECMM. In this thesis a novel approach i.e. cryogenic …
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Production of steel matrix composites by mechanical milling and spark plasma sintering
… leads to a decrease in toughness, therefore metal matrix composite (MMC) coatings and functionally graded materials have been proposed as a good solution for improving wear resistance. In this PhD thesis powder metallurgy has been applied for the production of particle reinforced HWTSs. …
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Residual stress determination in advanced silicon carbide fibre reinforced aluminium matrix composites
Metal matrix composite (MMC) materials can provide very desirable material and component properties. MMCs can be divided into two groups; those that are reinforced by long continuous fibres (such as carbon, alumina, silicon, boron and carbide) or those reinforced by discontinuous fibres …
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Graphene Oxide Reinforcement in Plasma Sprayed Nickel-5%Aluminum Coatings
<p>Metallic plasma sprayed coatings are widely used in the aerospace industry for repair on worn engine components. However, the inherent defects in these coatings limit the variety of repairs and reduce the service life of the repaired parts. A potential solution to overcome this problem is to mix …
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Expanding the Portfolio of Additive Manufacturing Capabilities through Advanced Processing Techniques
… and rapid thermal cycles seen in beam-based metal AM are common causes of solidification cracking and anisotropic mechanical properties. Various studies have shown approaches to address the processing defects and material anisotropy in powder-based AM, such as creating AM-specific alloy …
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