Optimization of multistage artificial aging parameters on Al-Cu alloy mechanical properties

Abstract

Purpose: This research is aimed to describe heat treatment process by using multistage artificial aging for Al-Cu alloy with Taguchi method in Minitab 16 to optimize the heat treatment parameters. This research conducted due to the applied of aluminium alloy in automotive industrial and aircraft industrial that has good properties for fabrication. Design/methodology/approach: Methodology that use in this paper is experimental design with statistical approach. Three controllable parameters were selected, they were temperature aging, holding time of aging, and the number of stages. The hardness value and impact value after multistage artificial aging were chosen as quality characteristics. The experiment was performed using orthogonal arrays of L9 (33). Findings: The finding that resulted in this research are the most significant parameters that affected hardness and toughness value of Al-Cu alloy against multistage artificial aging. The optimal hardness and toughness for Al-Cu alloy were obtained with heat treatment at temperature 200ºC, holding time for 6 hours, with two stages artificial aging. Research limitations/implications: The limitation that found in this research is even optimal level had been determined, it is unable to determine the true optimal value of each design parameters. Practical implications: This optimization process can be applied in manufacture process in industrial without spend expensive cost and time. Originality/value: According to research result, can be understood that by conducting these experiments, the impact value and the hardness value of Al-Cu alloy increase with multistage artificial aging treatment.

Investigation of Coating Thickness, Hardness and Wear Resistance of Aluminum 6061 by Anodizing Treatment

“…Aluminum is one type of non-ferrous metal that is most widely used in the world, especially in the automotive, aircraft industry, manufacturing industry, and household appliances, this is because aluminum has several advantages such as being lightweight, resistant to corrosion, cheap, and easy to be formed [1]. However, when compared to other commercial metals, aluminum has a relatively lower hardness and wear resistance [2,3]. Previous research about the use of anodizing treatment showed changes in hardness with variations in electrolyte solutions [4].…”