SOLID PARTICLE AIRJET EROSION AND CORROSION BEHAVIOR OF AA6063 ALUMINUM ALLOY

Abstract

Aluminum alloy 6063 has excellent mechanical properties and it is used in automotive industries. This research focuses on solid particle airjet erosion behavior in different input parameters such as mass flow rate of 2, 3, and 4[Formula: see text]gm/min, impingement angle of 30∘, 60∘, and 90∘ and erodent velocity of 100, 150, and 200[Formula: see text]m/s. The alumina erodent is mixed with an airjet which acts as an impingement fluid jet. Taguchi was utilized for investigating the influence of the process parameter on erosion rate, and ANOVA was performed to evaluate the parameter contribution. The impingement velocity is the most significant parameter to reduce the erosion rate rather than the impingement angle and the mass flow rate. The increase in velocity of the impingement fluid jet accelerates the erosion rate due to the high kinetic energy impact. The desirability approach is used to optimize the input parameters. At 99% confidence levels, the models were considered significant. The importance of the factor is increased by a reduced p-value. From the overall analysis, the optimum conditions of solid particle airjet erosion are impingement angle of 90∘, erodent velocity of 100[Formula: see text]m/s and erodent flow rate of 2[Formula: see text]gm/min. Utilizing the cyclic sweep approach, corrosion behavior and NaCl solution are involved in the test of AA6063. As the corrosion current density increased, the corrosion potential became more positive.