The Effect of Reduction Cross Section Area and Rolling Temperature in Mechanical Properties of Al-Cu

Abstract

Aluminium is one of the materials that mostly used in the industry after iron and steel. One of the methods that can be used to optimize their mechanical properties is a rolling process. However, the rolling process cannot be obtained at a low temperature since the formability of Al- Cu quite low. According to this research, the rolling process carries out at a high temperature; it is above its recrystallization temperature. The point of this research is to discern the maximum reduction in the temperature of 300°C, 400°C and 500°C and the influence of the mechanical properties. Based on the research the result shows us the higher temperature in hot rolling (300°C, 400oC, and 500°C), it can decrease 7,1% the hardness value but it can increase 550% the cross-section reduction. However, the toughness value of the material will increase. It shows us from the result of tensile strain up to 18%, the result of yield strain up to 130,77% and the elongation value up to 600%. The increasing of temperature in hot rolling in Al- Cu 2024 to achieve the formation of the intermetallic unit on intergranular grain finer.