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This study aims to analyze the effect of changing process parameters on hardness, tensile strength, and micro structure of aluminum matrix composite (AMC) with the composition of Al5% Cu-12% Mg-15% SiC after going through the process of changing the rotational speed variant, where the stir casting speed is 1000, 2000 and 3000 rpm. From the test results obtained the highest hardness value is achieved at a rotational speed of 3000 rpm which is 105.6 BH and the highest tensile strength value is achieved at 2000 rpm rotation which is 72.7 N/mm2, and the results of microstructure observations show the reinforcement of elements C, Mg and SiC more evenly distributed at 2000 and 3000 rpm rotational speeds. From the differences / changes in the value of hardness, tensile strength and microstructure, it is proved that there is an influence of the parameters of the change process of stir casting rotational speed on the value of hardness and tensile strength and microstructure of AMC.

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Pengaruh Variasi Putaran Terhadap Nilai Kekerasan, Kekuatan Tarik dan Struktur Mikro Alumunium Matrix Composite (AMC) Hasil Stir Casting Dengan Paduan Mg dan SiC yang Berlebih