PENGARUH PENAMBAHAN SiC DAN FLY ASH PADA FABRIKASI ALUMINIUM MATRIX COMPOSITE MELALUI METODE STIR CASTING

REZA, MUHAMMAD and Arifin, Arnir (2016) PENGARUH PENAMBAHAN SiC DAN FLY ASH PADA FABRIKASI ALUMINIUM MATRIX COMPOSITE MELALUI METODE STIR CASTING. Undergraduate thesis, Sriwijaya university.

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Abstract

The initial development of the metal matrix composite (MMC) has started since the seventies. Generally, the composite technology development aims to improve the efficiency of the structure and characterization of significant material properties, such as to the application of the lightweight material but very strong. This technology continued to be applied to comply the efficiency demands of industrial products that require a material that is strong, lightweight, wear resistant, and resistant to high temperatures. The composite material is being seriously examined today are Metal Matrix Composite. MMC is the composite technology with metal as the matrix. This study aims at the development of materials Al-SiCVSiC-focused AMC (matix aluminum composite) with the aim to improve the mechanical properties by the addition of reinforcing aluminum as the matrix, fly ash and silica Carbide as a reinforcement that is processed using methods stir casting. To test the mechanical properties of the material do impact testing, hardness testing, tensile testing and testing and metal lography. Broadly speaking, to make the process of recycling serap aluminum, it takes at least three stages: (1) The process of separation and pre-melting, (2) The process of melting, and (3) The process of removal of inclusions and hydrogen gas process of separation and pre -melting is a series of processes performed before the aluminum is melted again, the objective is to separate the elements of impurities that reduce the purity of recycled aluminum products. In this process, the separation process is done physically is based on maero sightings of impurities. Stir casting a composite manufaeturing process the aluminum in molten condition by using a mixer, which is performed at a temperature slightly above the melting temperature of aluminum. Advantages stir casting method is a process that is simple, flexible and can be used for products in large quantities, and can reduce the final cost of the process. This method is the most economical in the manufaeture of composite aluminum and allows the fabrication processes used for large-sized components. In a study of aluminum alloy that is balanced with copper are melted in a graphite fumace. At the same time SiC is heated at a temperature of 110° approximately 2 hours to remove surface dirt and helps in the adsorption gas. Ceramic particles is then poured slowly and continuously into the molten metal and the melt was kept stirred at a speed of 600 rpm. In preparing metal matrix composites with methods stir casting there are several factors that need to be sufflciently considered, namely the difficulty of achieving uniformity reinforcing material, wettability or able to soggy between the two main substances, porosity in the cast metal to the composite matrix, and Chemical reactions between the reinforcing material and the alloy matrix The results of the testing that influence the content of reinforcement in the form of fly ash and SiC, are very influential on the increase in impact strength, hardness and tensile. On the fly ash fraction 12% SiC 8% worth 57.15 BHN, worth of E Impact energy is 10.22 E and the impact energy per unit area of W equal to 0.128 J/mm2. On the fly ash fraction 12% SiC 8% of the tensile strength gets maximum voltage value 15.859 kgf/mm2 and maximum strain on the fraction of the fly ash 0% SiC 8% amounted to 5.133 kg /mm2. Keywords : Alumunium, fly Ash, SjC, stir casting, alumunium matix composite Citations : 21 (1961-2014)

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Alumunium, fly Ash, SXC, stir casting, alumunium matix composite
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ1425-1475 Lifting and pressing machinery
Divisions:	03-Faculty of Engineering > 21201-Mechanical Engineering (S1)
Depositing User:	Ichlasyah Aisyah
Date Deposited:	29 Aug 2025 04:38
Last Modified:	29 Aug 2025 04:38
URI:	http://repository.unsri.ac.id/id/eprint/183473

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