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Marble dust is a construction waste material from the processing of marble producing rocks. In this work, the usability of waste marble dust as a reinforcement in the development of Aluminium Metal matrix alloy has been investigated for use in bearing application. The flexural strength and SIF kept onincreasing continuously with increase in reinforcement content up to 10 wt% marble dust while Compressive strength and impact strength showed improvement for the marble dust concentration. Engine bearings are used under increasingly severe temperature and loads. In various condition there isproblem of low fatigue resistance for this Aluminium Metal matrix alloy with the use of marble sludgein bearing production is defined. This paper presents the marble waste powder in various ranges, resulting in higher compressive power, tensile splitting strength and bending strength as specimens. As review, Stir Casting can be used to make this composite and can evaluate its mechanical properties, thermo-mechanical behavior by different methods. [ABSTRACT FROM AUTHOR]

The engineering of a new class of material known as metal-matrix composites involves the reinforcement of aluminum and its alloys with various reinforcing powders. The addition of ceramic particles is expected to increase the mechanical property-to-weight ratio of pure aluminum and its alloys, as well as their wear resistance and high specific hardness. However, due to an inadequate production technique and process conditions, the insertion of non-deformable ceramic reinforcements results in a considerable loss of ductility and toughness. Friction stir processing technique is the name of the fabrication method employed in this study. A solid state processing technique called FSP has been used to change microstructures. Using SEM, the microstructures of the composites were examined, and Otsu Image Thresholding Technique was used to forecast the grain sizes inside the microstructure. The segmented image's mean particle size for one-pass FSP was 2.69x103µm at an X155 magnification. The flow mechanism in the friction stir process is illustrated by the observation that 2.69x103µm particle size for two passes showed less spherical structures and more irregular structures. The three-pass sample yielded a mean particle size of 1.36x103µm, which indicates a more uniform distribution within the matrix and a considerable size reduction in comparison to those obtained from one pass and two passes. A finite element analysis tool called ABAQUS was utilized to predict how this heat would affect the quality of the composites. With less than 15°C separating the processing temperatures between the experimental and simulated data, the peak temperature increased as the tool rotated in accordance with the projected temperature history of FSP for the composites at various tool rotating speeds. [ABSTRACT FROM AUTHOR]

Aluminium alloys play a major role in synthesizing parts for the aerospace, automobile, and defence sectors because of their ease of production and modification. The addition of hard-ceramic particles to the aluminium matrix will improve the strength-to-weight ratio. Aluminium 7075 alloy is chosen as a workpiece because of its high strength and low weight. Metal matrix composites, particularly aluminium alloy matrix composites, are suitable choices for industrial applications because of their favourable technical features. In this work, the Aluminium 7075 metal matrix was strengthened with Graphite and Bagasse ash. It was formulated by the stir casting method. The reinforcement was added in three compositions. The machining characteristics are studied by testing its properties such as the microstructure of the specimen and properties of wear. The properties of these specimens are compared with the three compositions that we have produced and the best is chosen among them. The microstructure is analysed using Scanning Electron Microscope (SEM). [ABSTRACT FROM AUTHOR]

Owing to its unique weldability and flexibility to be extruded, polymer composites are frequently utilised in welding, extrusions, forging, and casting. By integrating hard-ceramic particles into the aluminium matrix, the strength- to-weight ratio will be enhanced. Because of its high strength and low weight, aluminium 6061 alloy is used as workpiece material. Because of their favourable technical features, metal matrix composites, particularly aluminium alloy matrix composites, are good choices for industrial applications. The metal matrix of Aluminum 6061 was strengthened with Ash and SiC in this project. The stir casting procedure helped to create it. Three different mixes of reinforcement were used. Testing such as the tensile test, hardness test, impact test and microstructure examination are used to investigate mechanical qualities. These specimens' qualities are compared to the three compositions we've created, and the best of them is picked. Scanning Electron Microscope is used to examine the microstructure (SEM). [ABSTRACT FROM AUTHOR]

Composites of aluminium alloy have strength comparable to conventional metals. Copperas an alloying element results in improved strength of aluminium. Silicon carbide and graphite also yield better strength when reinforced to aluminium alloys. Graphite has additional advantage due to its solid lubricant characteristic. Effect of silicon carbide and graphite on tensile strength and hardness are studied by varying reinforcement of silicon carbide the percentage of which is based on design of experiments. Tensile strength along with hardnesshas increased with 0 – 8 % SiC reinforcement. These values are further improved upon additionof graphite as secondary reinforcement in the hybrid composites. This can be attributed to uniform distribution of reinforcements as reveled by Scanning Electron Microscope images. [ABSTRACT FROM AUTHOR]

The experimental research article focuses on determining tensile properties of Aluminum 5154 alloy reinforced with 5% weight fraction of Sic, 5 % weight fraction of TiB2 and 2.5% weight fraction each of SiC and TiB2, fabricated by stir casting method. The effect of the reinforcements on mechanical properties like tensile strength and tensile modulus are evaluated and compared with Al 6063 and Al7075 alloys. TiB2 reinforced composite exhibited superior tensile properties. [ABSTRACT FROM AUTHOR]

Metal matrix composites (MMCs) come under advanced materials that can be used for a wide range of industrial applications. MMCs contain a non-metallic reinforcement incorporated into a metallic matrix which can enhance properties over base metal alloys. Copper-Carbon fiber reinforced aluminium based hybrid composites were prepared by compo casting method. 4 weight % copper was used as alloying element with Al because of its precipitation hardened properties. Different weight compositions of composites were developed and characterized by mechanical testing. A significant improvement in tensile strength and micro hardness were found, before and after heat treatment of the composite. The SEM analysis of the fractured surfaces showed dispersed and embedded Carbon fibers within the network leading to the enhanced strength. [ABSTRACT FROM AUTHOR]