Analisis Pengaruh Heat Treatment Terhadap Nilai Uji Impak Pada Alumunium Alloy 6061
Keywords:
Aluminum alloy 6061, heat treatment, impact test, Taguchi methodAbstract
The use of lightweight metal alloys such as aluminum is widely found in the industrial sector, particularly in the automotive industry. The widespread use of this material is due to its advantageous properties, including being lightweight, corrosion-resistant, and heat-treatable. The use of aluminum materials has become prevalent in various everyday applications, one of which is aluminum alloy 6061. Aluminum alloy 6061 is primarily used in automotive components, such as suspension systems, due to its lightweight nature, good strength, and corrosion resistance. However, there is still an opportunity to enhance its strength, one of which is through the heat treatment process. This study conducted a heat treatment process to increase the impact strength of aluminum alloy 6061. The parameters used in this research include temperature (380 °C, 400 °C, and 420 °C), holding time (60 minutes, 90 minutes, and 120 minutes), and cooling medium (water, air, and SAE40 oil). The use of an orthogonal array in this study aimed to minimize experimental trials. Based on calculations using the Taguchi method, the optimal heat treatment parameters for aluminum alloy 6061 were determined to be a temperature of 400 °C, a holding time of 60 minutes, and SAE40 oil as the cooling medium. With this combination of parameters, the impact test value increased 0.16900 J/mm ². An analysis conducted using ANOVA confirmed that the temperature factor (A) contributed approximately 31.21%, making it the most significant factor influencing the increase in impact test values.
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