scholarly journals Mechanical and Wear Behavioral Assesment of Al 7075-Al2o3 Metal Matrix Composite

2019 ◽  
Vol 8 (11) ◽  
pp. 2966-2970
Keyword(s):  
Mechanical Properties ◽  
Wear Resistance ◽  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Weight Ratio ◽  
High Strength ◽  
Matrix Alloy ◽  
Mechanical And Tribological Properties ◽  
Thermal Growth

Aluminum alloys are wide utilized in part and automobile industries because of high strength to low weight ratio and their smart mechanical properties like higher corrosion resistance and wear resistance, low thermal growth as compared with different metals. Aluminium 7075 alloy is chosen as matrix alloy and Al2O3 as a reinforcement. The amount of Al2O3 particles is varied with weight fractions of 2%, 4%, 6% .The objective of the paper is to enhance the mechanical and tribological properties like impact strength, hardness, wear of Al7075 alloy based metal matrix composite. The result were found that with increase in reinforcement content of Al2O3 in Al7075 alloy improve the mechanical properties and wear resistance

scholarly journals Experimental Research on AA 6061/SICP Composites

2019 ◽  
Vol 9 (2) ◽  
pp. 3508-3510
Keyword(s):  
Mechanical Properties ◽  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Aluminum Matrix ◽  
Weight Ratio ◽  
High Strength ◽  
Matrix Alloy ◽  
Stir Casting ◽  
Silicon Carbide Particulate

Aluminium alloys are widely used in aerospace and automobile industries due to high strength to low weight ratio and their good mechanical properties such as better corrosion resistance and wear resistance, low thermal expansion as compared with other metals. The main objective of our work is to improve the mechanical properties such as impact strength, hardness of Aluminium based Metal Matrix Composite (MMC), and its relation with processing of the silicon carbide particulate (SiCp) as reinforced in Aluminum matrix. AA6061 alloy is chosen as matrix alloy, in which Aluminum is the base element. The work has been proposed for four different weight proportions of SiCp to aluminium matrix and the processing of the metal matrix composite is to be processed with stir casting setup and heat treated.

scholarly journals Mechanical and Wear Properties of Cold Extruded Al6063 Metal Matrix Alloy Reinforced with Silicon Carbide, Alumina and Cerium Oxide

2020 ◽  
Vol 9 (3) ◽  
pp. 4091-4097
Keyword(s):  
Mechanical Properties ◽  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Weight Ratio ◽  
Extrusion Process ◽  
Cold Extrusion ◽  
Wear Properties ◽  
Composite Systems ◽  
Aesthetic Appearance

Metal matrix composite is considered in various engineering fields like Automobile, medical, electronics aerospace, marine, recreational sectors, of which Aluminum metal matrix composite is considered mostly because of its high strength to weight ratio, easy of fabrication, corrosion resistance, good aesthetic appearance and high resistance to wear etc. This paper concentrates on the effect of secondary processing (Cold Extrusion) on mechanical and wear properties of Al6063 reinforced with SiC, Al2O3 and CeO2 particles. Here composite systems prepared by varying reinforcement from 0% to 8% in steps of 2%. Stir casting route adopted for casting composite systems after casting the composite is made to pass through extrusion process with an extrusion ratio of 1.93 with a total strain of 1.45. All composite systems tested for mechanical properties as per ASTM and ISO standard. Wear test was conducted on pin on disc setup for different loads, reinforcement, sliding distance and sliding speed. Results reveals that due increase in reinforcement the mechanical properties have improved further improvement observed when subjected to extrusion process, similar observation was made for wear studies which conclude the wear rate is improved for extruded composite as compared to cast composite systems observed by various researchers.

Manufacturing of Al-Li-Si3N4 metal matrix composite for weight reduction

2021 ◽  
Vol 63 (2) ◽  
pp. 169-175
Author(s):  
Raju Kandasamy ◽  
Balakrishnan Marimuthu
Keyword(s):  
Silicon Nitride ◽  
Impact Strength ◽  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Metal Matrix ◽  
High Strength ◽  
Matrix Alloy ◽  
Strength Properties ◽  
Uniform Dispersion ◽  
The Matrix

Abstract The present analysis was aimed to identify the properties of Al 2024 composite reinforced with lithium and silicon nitride to make it applicable for automobiles, sports and aerospace applications. An effort was made to reduce the density and increase the hardness and impact properties of aluminum 2024 matrix with individual and multiple reinforcements using the double casting method under non-reactive environment. Aluminum alloy matrices with lithium, silicon nitride and the combination of both were fabricated. The microstructure, density, hardness and impact strength properties of the fabricated aluminum metal matrices were analyzed. The microstructure study reveals the uniform dispersion of reinforcements in the matrix alloy. From the results, it is understood that the hardness and impact toughness increase with the addition of silicon nitride. Density is reduced with the addition of lithium as reinforcement. When both reinforcements were added in the matrix, it was observed that there was an increase in hardness and impact strength of the composites with decrease in density of the metal matrix composite making it suitable for light weight and high strength applications.

Assessment of the mechanical properties of aluminium metal matrix composite: A review

2018 ◽  
Vol 38 (6) ◽  
pp. 267-298 ◽  
Author(s):  
Manish Maurya ◽  
Sudhir Kumar ◽  
Vivek Bajpai
Keyword(s):  
Mechanical Properties ◽  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Metal Matrix ◽  
High Strength ◽  
Stir Casting ◽  
Processing Technique ◽  
Bench Mark ◽  
Friction Stir ◽  
Study Guides

In the present scenario, composites are in huge demand in the industries due to their light weight, wear resistance, stiffness and high strength. The functional and structural properties were improved according to the need of industry. Particulate reinforcement is one of the methods to enhance the strength, ductility and toughness of the composites. Stir casting or friction stir processing technique was used to fabricate the metal matrix composite. For technology seekers it is very difficult to select appropriate techniques because there is lack of bench mark standards and industry experiences. The novel contribution of this paper is to provide systematic approaches and methodology which enable academic user as well as industry persons to select appropriate method and parameters for the fabrication of the metal matrix composite. This study guides the new researchers to fabricate and characterize the mechanical properties of aluminium-based composites reinforced with Al2O3, B4C, SiC, TiC, graphite and TiB2 particles.

TEM examination of 2014-SiC metal matrix composite

1988 ◽  
Vol 46 ◽  
pp. 726-727
Author(s):  
M. G. Burke ◽  
M. N. Gungor ◽  
P. K. Liaw
Keyword(s):  
Metal Matrix Composite ◽  
Metal Matrix Composites ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Tensile Deformation ◽  
Microstructural Characterization ◽  
Thin Foil ◽  
Matrix Alloy ◽  
Matrix Composites ◽  
Ion Milling

Aluminum-based metal matrix composites offer unique combinations of high specific strength and high stiffness. The improvement in strength and stiffness is related to the particulate reinforcement and the particular matrix alloy chosen. In this way, the metal matrix composite can be tailored for specific materials applications. The microstructural characterization of metal matrix composites is thus important in the development of these materials. In this study, the structure of a p/m 2014-SiC particulate metal matrix composite has been examined after extrusion and tensile deformation.Thin-foil specimens of the 2014-20 vol.% SiCp metal matrix composite were prepared by dimpling to approximately 35 μm prior to ion-milling using a Gatan Dual Ion Mill equipped with a cold stage. These samples were then examined in a Philips 400T TEM/STEM operated at 120 kV. Two material conditions were evaluated: after extrusion (80:1); and after tensile deformation at 250°C.

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