The Effect of Ball Milling &amp; Reinforcement Percentage on Sintered Samples of Aluminium Alloy Metal Matrix Composites

Ashwath, P.; Xavior, M. Anthony

doi:10.1016/j.proeng.2014.12.380

Cited by 56 publications

(23 citation statements)

References 7 publications

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“…% graphene content samples have a lower average hardness value. It was due to the aggregation of graphene sheets [16,17]. And the error bars of these average hardness values on Fig.5 also illustrated that higher graphene samples hardness values were scattered maybe mainly due to graphene agglomeration.…”

Section: Vickers Hardness Of the Composite Coatingsmentioning

confidence: 87%

Tribological Performance of Graphene-Copper-Iron Composite Coating

Hu¹,

Chen²,

Fan³

et al. 2018

Proceedings of the 4th Annual International Conference on Material Engineering and Application (ICMEA 2017)

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Abstract-Graphene sheets and copper powder were dispersed into Polyvinyl Alcohol (PVA) solution by magnetic stirring, and then pre-coating the mixed solution on the polished AISI4140 substrate. Then laser cladding and laser remelting process were used to fabricated graphene copper and iron composite coating. Microstructures and composition of the composite coating was studied by using Scanning Electron Microscopy (SEM), Energy Dispersive Spectrometer (EDS) and Raman spectroscopy. Raman spectrum, SEM results proved that graphene sheets were dispersed in the composite coating. Vickers hardness test results showed that the composite coating had higher hardness values. With the graphene addition, the tribological performance of the composite coatings became better, and for pure copper iron coating, the average friction coefficient was 0.16, while for the 10% graphene copper iron coating, it was reduced to 0.13.

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Section: Vickers Hardness Of the Composite Coatingsmentioning

confidence: 87%

Tribological Performance of Graphene-Copper-Iron Composite Coating

Hu¹,

Chen²,

Fan³

et al. 2018

Proceedings of the 4th Annual International Conference on Material Engineering and Application (ICMEA 2017)

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“…The average particle size of matrix and reinforcements is 10 microns and the metal matrix samples are fabricated through powder metallurgy route and sintered temp is 550° C and the time in the range of 10-15 min. [12][13]. The high energy ball…”

Section: Imentioning

confidence: 99%

Synthesis and Investigation of Magnesium Matrix Composite with Titanium Oxide by Powder Metallurgy

A¹

2017

IJRASET

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The investigations of magnesium based matrix material reinforced with the TiO 2 particles with various weight ratios of 2.5, 5, 7.5 and 10% are presented in this research paper. The purpose of this work is to elaborate the manufacturing processes of pure magnesium with the addition of Titanium oxide through the powder metallurgy route. The powder blending was done with the energetic ball and jar mill. The compaction pressure of 650Mpa is given to improve cold compaction. The Sintering temperature of 550 o C and holding time of 30 min was used to sinter the compacts to get better results. The microstructural analysis by scanning electron microscopy (SEM) for the starting powders and fabricated samples are carried out for the investigation. The mechanical properties are evaluated and the results proved that improvement in 13.8% ,17.8% and 29% for the density, hardness values and universal tensile strength. Keywords: Magnesium, Titanium oxide, SEM analysis, Mechanical properties, Powder metallurgy. I.INTRODUCTION Composite materials could be in the form of natural or synthetic which combines two or more chemically distinct materials in order to achieve improved properties over the individual materials. Usually matrix is a ductile or tough material and reinforcing materials are strong with various properties and in the form of particles, platelets, whiskers, short fibers, and continuously aligned fibers are combined together to get desired properties, otherwise that was not available in any single conventional material. The incorporation of reinforcement increases stiffness, specific strength, design flexibility, corrosion resistance, fracture resistance, durability and reducing relative investment. The advanced composites are used in aerospace, sporting goods, military and commercial aircraft, etc. magnesium based composites used in space and satellite structures, Antenna structures, Helicopter transmission structures with the reinforcing particles of Graphite, boron, alumina respectively. The composites can be used in thermal management and support systems for electronic packages like integrated circuit materials. Magnesium is useful in manufacturing of electronic devices such as cameras, laptops and mobile phones [1][2][3]. It is well known that the elastic properties of metal matrix composites are strongly influenced by micro structural parameters of the reinforcement such as shape, size, orientation, distribution and volume fraction [4]. The mechanical properties of composites are controlled by the structure and properties of the reinforcements [5]. There are several metal matrix processing technologies available in modern world era. The powder metallurgy process followed by hot extrusion and casting methods is playing vital roles among them. The major advantage of powder metallurgy over other methods is that small elements with near net shape could be manufactured with dimensional stability, whereas manufacturing of locally reinforced elements from composite materials with excellent surface quality s...

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“…In P. Ashwath [8], the matrix material used in this research work is AA2900 alloy which is alloyed with copper. Reinforcement SiC, Al2O3 and Graphene of particle size 10 microns in case of SiC and Al2O3 and 10 Nano micronsin case of Graphene.…”

Section: Aa 2900 Graphene Compositementioning

confidence: 99%

“…Issue 7,Vol.6 (October-November 2017) Available online on http://www.rspublication.com/ijeted/ijeted_index.htm ISSN 2249-6149 In P. Ashwath [8], the weighed powder is mixed in a high energy ball mill from VB Ceramics Inc. Chennai. Since the particle size of matrix and the reinforcements are 10 microns which is sufficient for compaction ball milling was focused only on mixing rather than running it for hours to further break particles to attain fine grains.…”

Section: International Journal Of Emerging Trends In Engineering and mentioning

confidence: 99%

Synthesis and Evaluation of Properties of Graphene Reinforced Aluminium Metal Matrix Composite – A Review

Balamurugan¹

2017

IJETED

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Aluminium alloys and its composites have been widely used in Aerospace and automobile industries due to its potential properties like low density and good structural rigidity. However, the important criteria in enhancing the mechanical properties without compromising the ductility is always challenging in Aluminium and its alloys based composites. Graphene is considered as an ideal reinforcement for the production of composites due to its outstanding mechanical properties. These characteristics offer an increased opportunity for their study in the production of metal matrix composites (MMCs). This study is based on the reinforcement of graphene in aluminium alloys. The synthesis of Graphene Aluminium metal matrix composite is performed by Powder metallurgy process. The composite mixture with various proportions of graphene is ball milled and is extruded to form pellets. These Graphene Aluminium Composite pellets are further Sintered in Argon atmosphere to improve its yield and tensile strength. The increase in ball milling time and proportion of the graphene increases the hardness of the composite. In some times the sintering temperature improves the homogeneous dispersion of the materials. Key words:Aluminium, Graphene, Metal Matrix composites, Powder metallurgy, graphene aluminium composite. INTRODUCTION:The wide application of aluminium in the automotive and aerospace industry, makes aluminiummatrix composites an important option to meet future challenges in the design of structural components. In this concern, the reinforcement material used in the production of composites plays a key role in order to maximize the mechanical performance of the composites. The use of nanometric reinforcement materials for the development of aluminium-matrix composites has demonstrated a positive effect on the mechanical behavior of the final products. This has been the case of aluminium-matrix composites reinforced with carbon nanotubes [1] and most recently reinforced with graphenes [2,3]. A single layer of graphite is called graphene. It has good electrical, thermal, and physical properties. The nanometric nature and high specific surface area allow a great interaction of reinforcement phase with the matrix even in small concentrations.The strength of aluminium alloys may not be high enough to be used in the manufacture of automobile and aerospace parts for specific applications. One method to enhance the strength of aluminium alloys while maintaining their light weight is fabricating metal matrix composites (MMC) using novel and high strength materials as reinforcement. Various processing and manufacturing methods, mostly based on casting or powder metallurgy (PM), are available to synthesize nano size particle reinforced metal composites. However, uniform and homogeneous dispersion of these nanosize particles reinforced in molten metal is not possible. Also, agglomeration, micro-level porosity is observed as a common defect in casting process. Techniques based on powder metallurgy are most suitable and effective f...

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The Effect of Ball Milling & Reinforcement Percentage on Sintered Samples of Aluminium Alloy Metal Matrix Composites

Cited by 56 publications

References 7 publications

Tribological Performance of Graphene-Copper-Iron Composite Coating

Tribological Performance of Graphene-Copper-Iron Composite Coating

Synthesis and Investigation of Magnesium Matrix Composite with Titanium Oxide by Powder Metallurgy

Synthesis and Evaluation of Properties of Graphene Reinforced Aluminium Metal Matrix Composite – A Review

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