ABSTRACT
This study aims to evaluate the creep behavior of Duralumin, signifying the effect of high temperature on the mechanical properties of Al-4Cu-1Mg to determine its potential in engineering applications. This research presents the creep behavior of Al-4%Cu-1%Mg at different temperatures i.e., 200°C, 250°C, 300°C, and 350°C, and also at varying loads of 4500N, 5500N, 6500N, and 7500N. The results obtained show that as the temperature increased from 200°C to 350°C, the creep rate increased from 2.35 x 10^-5/s to 3.34 x 10^-5/s, respectively. The results also show a sinusoidal high-temperature creep rate behavior of the alloy as the load increased from 4500N to 7500N. It was observed that the alloy has an ultimate tensile strength, hardness value, and toughness strength of 588.33 N/mm², 80.9 HRC, and 3.00 joules, respectively. The study concludes that variation in temperature between 250°C and 300°C at a constant load of 4500N leads to a relative increase in the creep rate of duralumin. Additionally, the variation in temperature between 200°C and 350°C affects the creep rate of duralumin. Moreover, the variation in load between 4500N and 7500N also impacts the creep rate, with a sinusoidal creep behavior observed in relation to changes in stress (load).
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