scholarly journals Tensile and Compressive Behaviour of Solid Glass Microspheres Reinforced LM13 Aluminum Alloy Based Metal Matrix Composites

2020 ◽  
Vol 9 (3) ◽  
pp. 1826-1830
Keyword(s):  
Aluminium Alloy ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Particulate Composite ◽  
Stir Casting ◽  
Light Weight ◽  
Matrix Composites ◽  
Glass Microspheres ◽  
Compressive Behaviour ◽  
Solid Glass

Aluminium compound materials saw to be the best choice with its exceptional utmost of sketching out the novel material for gaining desired properties. Aluminium alloy based composite materials are expanding broad affirmation for aeronautics application in perspective on their high strength combined with low density or light weight. In the present concerned work, an endeavour is put to prepare and focus the tensile and compressive behaviour of Aluminium alloy LM13 and Solid Glass Microspheres (SGM) particulates Composite with perspective to get better properties with light weight. Stir casting method was used to manufacture these aluminium alloy LM13 and SGM particulate composite with 10 v%, 15 v% and 20 v% of reinforcement. Based on ASTM benchmarks, the composite samples were prepared and tested, and the results obtained were then analysed. A notable improvement was perceived in the strength of tensile and compressive capacities of the developed metal matrix composites (MMC).

scholarly journals Solid Glass Microspheres Filled Aluminum Alloy Metal Matrix Composite Made Through Stir-Casting Technique

2020 ◽  
Vol 8 (5) ◽  
pp. 4471-4475
Keyword(s):  
Aluminium Alloy ◽  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Metal Matrix ◽  
High Strength ◽  
Stir Casting ◽  
Glass Microspheres ◽  
Casting Technique ◽  
Solid Glass ◽  
Alloy Metal

Solid Glass Microspheres (SGM) in the range of 10–20 vol. % were used as reinforcement for making aluminium alloy metal matrix composite having density 2.66–2.68 gm/cc using stir-casting technique. Aluminium alloys are not new for synthesizing Metal Matrix Composites (MMC’s), as they have already established their exceptional ability to sketch out the material for required properties where high strength is expected from a low density material. This has made them one of the widely used materials for aeronautics and marine applications where strength and weight are among the major governing factors for the suitability of any material. So, an effort is made to enhance the strength of aluminium alloy LM13 without affecting its lightness, by reinforcing it with Solid Glass Microspheres (SGM). This synthesized composite, is characterized in terms of its density and compressive deformation behaviour. It was observed that the developed composite behaves somewhat like a high strength aluminium foam under compressive deformation as exhibited in the stress–strain curves. The results of density evaluation and compression showed a substantial enhancement in the compressive strength of the developed composite with a considerably low change in density.

scholarly journals Effect of Cryolite on Microstructure of Insitu AlB2 Aluminium Metal Matrix Composites

2019 ◽  
Vol 8 (2S3) ◽  
pp. 940-943
Keyword(s):  
Composite Material ◽  
Aluminium Alloy ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Stir Casting ◽  
Matrix Composites ◽  
Casting Method ◽  
Halide Salt ◽  
The Matrix ◽  
Aluminium Metal

Todays composite material have gained more popularity due to their improved properties over the conventional materials. In the present paper, insitu composites were fabricated via chemical reaction between molten aluminium alloy and halide salt KBF4 with cryolite at 8000C by stir casting method. The microstructures of the composite containing 3 and 5 wt. % of AlB2 reinforcement phase have been compared with the unreinforced aluminium alloy. The microstructure analysis shows clean AlB2 particles uniformly distributed throughout the matrix. With the increase in the AlB2 reinforcement, insitu composite show less agglomeration and recovery of boron is more when compared to the unmixed halide salt in the fabrication of inistu composite

An Investigation on the Suitability of Al-Mg Binary Hypo-Eutectic and Eutectic Aluminium Alloys as a Metal Matrix for Polymer Reinforced Composites and Lightweight Applications

2019 ◽  
Vol 969 ◽  
pp. 484-489
Author(s):  
D. Kumaran ◽  
A. Rajadurai ◽  
S.P. Sundar Singh Sivam
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Binary Alloys ◽  
Research Work ◽  
Stir Casting ◽  
Pure Aluminium ◽  
Light Weight ◽  
Matrix Composites ◽  
Sem Images ◽  
Weight Percentage

This research work reports on the investigation on the suitability of prepared Al-Mg binary alloys of hypo-eutectic and eutectic compositions, for making metal matrix composites for light weight applications. Commercial pure aluminium, and magnesium blocks were used for the purpose of making binary alloys of Al-Mg, with the Mg in weight percentages 15%, 20%, 25%, 30%, and 37%. composition prepared by stir-casting under Argon cover gas. The cast Al-Mg alloys were cut to standard specimens to investigate its microstructure and mechanical properties. Test results revealed that the Vicker’s Hardness Number (VHN) of the alloys increases with the increased weight percentage of Mg and Ultimate Tensile Strength (UTS) were also increasing with increasing Mg content. The SEM images revealed the presence of micro-voids in alloys of higher Mg contents. The test values indicates the suitability of hypo-eutectic alloys as candidates for metal matrix composites for light weight applications.

Microstructural and Mechanical Behaviour of Aluminium Matrix Composites Reinforced with Coated SiC Particles Fabricated by Stir Casting

2015 ◽  
Vol 766-767 ◽  
pp. 301-307 ◽  
Author(s):  
S. Dhanalakshmi ◽  
M. Jaivignesh ◽  
A. Suresh Babu ◽  
K. Shanmuga Sundaram
Keyword(s):  
Mechanical Properties ◽  
Silicon Carbide ◽  
Tensile Strength ◽  
Impact Strength ◽  
Aluminium Alloy ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Base Alloy ◽  
Stir Casting ◽  
Matrix Composites

Metal matrix composites are the resultant of combination of two or more elements or compounds, possessing enhanced characteristics than the individual constituents present in them. This paper deals with the fabrication of Al 2014-SiC composite and investigation of its Microstructure and Mechanical properties. 2014 Aluminium alloy is characterized by good hardness. It is selected as the base metal. The Silicon Carbide is characterized by good strength and low density (3.21 g/cm3). It is chosen as the reinforcement. Silicon Carbide is coated with Nickel by electroless method to increase its wettability and binding properties. The fabrication of metal matrix composites is done by stir casting in a furnace, by introducing the required quantities of reinforcement into molten Aluminium alloy. The reinforcement and alloy is mixed by means of stirring, with the help of a stirrer. The base alloy and the composites are then tested for mechanical properties such as tensile strength, flexural strength, impact strength and hardness. The fabricated samples have higher tensile strength and impact strength than the alloy. Microstructure of the samples, are analyzed using optical microscope.

Tribological and Mechanical Behavior Study of Al6061-TiB2 Metal Matrix Composites Using Stir Casting

2014 ◽  
Vol 984-985 ◽  
pp. 200-206 ◽  
Author(s):  
S. Suresh ◽  
N. Shenbaga Vinayaga Moorthi ◽  
C. Emmy Prema
Keyword(s):  
Wear Resistance ◽  
Aluminium Alloy ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Stir Casting ◽  
High Energy ◽  
Matrix Composites ◽  
Casting Method ◽  
Behavior Study ◽  
Pin On Disc

Metal matrix composites, produced by stir casting method, have more advantages when compared to other methods. Aluminium alloy Al6061 was reinforced with various percentages of TiB2 particles by using high energy stir casting method. The characterization was performed through EDS and SEM. The mechanical behaviours like hardness, tensile and wear were investigated. Wear experiments were conducted by using a pin-on-disc wear tester at varying load to evaluate the tribological property of Al6061-TiB2 composite. The wear mechanism was studied through SEM. In this study revealed that the addition of TiB2 improves the wear resistance of aluminium composites. The results showed that the mechanical properties, such as tensile strength, wear resistance and hardness increased by the percentage of TiB2 present in the samples when compared with base aluminium alloy.

scholarly journals Effect of pouring temperature on cast Al/SiCp and Al/TiB2 metal matrix composites

2019 ◽  
Vol 28 (1) ◽  
pp. 162-168 ◽  
Author(s):  
C. Rajaravi ◽  
B. Gobalakrishnan ◽  
P. R. Lakshminarayanan
Keyword(s):  
Aluminium Alloy ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Base Alloy ◽  
Stir Casting ◽  
Ex Situ ◽  
Stoichiometric Ratio ◽  
Matrix Composites ◽  
A356 Aluminium Alloy

AbstractThe effect of pouring temperatures of an ex situ (Al/SiCp) and in situ (Al/TiB2) metal matrix composites (MMCs) synthesized using stir casting method were studied. The Al/SiCp composite were fabricated by mixing of 6wt.% of SiCp into cast A356 aluminium alloy melt and poured at diverse pouring temperatures (730∘C, 750∘C and 770∘C). The Al/TiB2 MMCs were obtained by melting A356 aluminium alloy and mixing of KBF4 and K2TiF6 precursor salts whose stoichiometric ratio composition corresponds to 6wt.% of TiB2 reinforcement and other parameters were constant (stirring speed 300 RPM and holding time 30 minutes). The composite melt was poured into the permanent mould with varied pouring temperatures (800∘C, 820∘C and 840∘C). Coarser and homogenous SiC particles were presented in the Al/SiCp MMCs, whereas, finer and uniformly distributed TiB2 particles were appeared at the MMCs of Al/TiB2. The mechanical properties viz. tensile strength, fracture toughness and hardness of Al/SiCp and Al/TiB2 MMCs were experimentally determined as per the ASTM standards and compared. Higher tensile and fracture strength were occurred at the MMCs of Al/TiB2 as compared to Al/SiCp MMCs and base alloy of aluminium as well. Maximum hardness was attained at the pouring temperatures of 820∘C and 750∘C in the MMCs of Al/ TiB2 and Al/SiCp, respectively.

scholarly journals Mechanical and Microstructural Characterization of Friction Stir Welded SiC and B4C Reinforced Aluminium Alloy AA6061 Metal Matrix Composites

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3110
Author(s):  
Kaveripakkam Suban Ashraff Ali ◽  
Vinayagam Mohanavel ◽  
Subbiah Arungalai Vendan ◽  
Manickam Ravichandran ◽  
Anshul Yadav ◽  
...  
Keyword(s):  
Wear Rate ◽  
Aluminium Alloy ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Weld Zone ◽  
Base Material ◽  
Matrix Composites ◽  
Wear Properties ◽  
Friction Stir ◽  
Behavioural Aspects

This study focuses on the properties and process parameters dictating behavioural aspects of friction stir welded Aluminium Alloy AA6061 metal matrix composites reinforced with varying percentages of SiC and B4C. The joint properties in terms of mechanical strength, microstructural integrity and quality were examined. The weld reveals grain refinement and uniform distribution of reinforced particles in the joint region leading to improved strength compared to other joints of varying base material compositions. The tensile properties of the friction stir welded Al-MMCs improved after reinforcement with SiC and B4C. The maximum ultimate tensile stress was around 172.8 ± 1.9 MPa for composite with 10% SiC and 3% B4C reinforcement. The percentage elongation decreased as the percentage of SiC decreases and B4C increases. The hardness of the Al-MMCs improved considerably by adding reinforcement and subsequent thermal action during the FSW process, indicating an optimal increase as it eliminates brittleness. It was seen that higher SiC content contributes to higher strength, improved wear properties and hardness. The wear rate was as high as 12 ± 0.9 g/s for 10% SiC reinforcement and 30 N load. The wear rate reduced for lower values of load and increased with B4C reinforcement. The microstructural examination at the joints reveals the flow of plasticized metal from advancing to the retreating side. The formation of onion rings in the weld zone was due to the cylindrical FSW rotating tool material impression during the stirring action. Alterations in chemical properties are negligible, thereby retaining the original characteristics of the materials post welding. No major cracks or pores were observed during the non-destructive testing process that established good quality of the weld. The results are indicated improvement in mechanical and microstructural properties of the weld.

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