ANALISIS SIFAT MEKANIK DAN MIKROSTRUKTUR HASIL SAMBUNGAN PENGELASAN GESEK ANTARA ALUMINIUM PADUAN DAN KUNINGAN DENGAN VARIASI KECEPATAN PUTARAN

HARNELEO, AGUS DWI and Arifin, Amir (2019) ANALISIS SIFAT MEKANIK DAN MIKROSTRUKTUR HASIL SAMBUNGAN PENGELASAN GESEK ANTARA ALUMINIUM PADUAN DAN KUNINGAN DENGAN VARIASI KECEPATAN PUTARAN. Undergraduate thesis, Sriwijaya university.

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Abstract

Friction welding includes the type of solid State welding where the welding process is carried out using solid phase. Heat input of welding is obtained from the direct conversion of mechanical energy into thermal energy through friction mechanism. This welding does not require a heat source from electricity or combustion, but a direct conversion from mechanical energy to heat energy. The heat generated from the friction process between interfaces will increase the temperature of the object in the axial direction with a relatively very short distance. Splicing occurs when the interface surface reaches temperatures below the liquid temperature. Fusion of both material occurs due to the influence of pressure on plastic metal mixing and diffusion mechanisms. Furthermore, the heat is stored in the material that is connected the temperature. A t certain temperatures the material is i n peifect plastic properties and the press is easily deformed. With the presence of Chemical diffusion events, the connection process will be carried out on the connected metal surface. The advantages o f this friction welding are that the cleanliness of the connection surface is not required, because during the friction process the surface will be exfoliated and deformed to the out s ide, filler metal, protective flux and protective gas during the process, no defects due t o liquefaction and freezing, it is possible t o connect two different metal materials, and the process is fast and effective so workmanship is more economical. Whereas the weakness of friction welding is that the object to be connected must be symmetrical, the design of the joint is limited to the surface of the plate, and the shape of the rod is round and one of the connected material must have the ability to be deformedplastically. The material used in this study is aluminum alloy and brass. Aluminum alloys are chosen due t o have properties such as light, strong, good heat conductors, good electrical conductors, corrosion resistanl and non-magnetic. Whereas brass is chosen because it has properties such as good electrical conductors, corrosion resistance, and easy to form. The machine used in this study is the Lathe Machine with variations in rotation speed used, namely (650 rpm, 800 rpm, 1020 rpm, 1200 rpm, and 1500 rpm). Tesis were carried oul with several processes namely bending testing, hardness testing, metallographic testing, SEM, EDS, XRD, and XR17. From some of these tesis obtained data about the results of friction welding, namely composition, slrenglh, hardness and microslructure. From the results of the bending fest the strength of the results of the Al-CuZn joint s tends t o be low. Bending strength increases with increasing rotation speed (highest average 16.22 kgf / mm2). Vickers hardness value al the Al-CuZn connection point has an average of 136.25 HV. From the results of XRF research, CuZn materials including copper alloys were obtained (Cu 58.54% and Zn 37.23%) and in Al including pure aluminum (lxxx series). Diffusion occurs at the interfaces between Al and CuZn which produce the intermetallic phase of the compound namely AfCu (khatyrkite). Obtained from the XRD test results, the main peaks forming AfCu appear, A FC u is brittle and brittle. Keywords. Friction Welding, Al-CuZn, Mechanical Properties, Microstructure

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Pengelasan Gesek, Al-CuZn, Sifat Mekanik, Mikrostruktur
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ1-1570 Mechanical engineering and machinery
Divisions:	03-Faculty of Engineering > 21201-Mechanical Engineering (S1)
Depositing User:	Ichlasyah Aisyah
Date Deposited:	12 Aug 2025 03:57
Last Modified:	12 Aug 2025 03:57
URI:	http://repository.unsri.ac.id/id/eprint/182735

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