Optimizaion approach for evaluation of mechanical properties of high pressure die cast aluminum alloyed product

Abstract

This work produces a machine component-motor cycle hand clutch using a high pressure cold chamber die casting machine. The  aluminum cable coil was alloyed with 10%wt silicon and 0.6%wt of magnesium and 0.5%wt of copper while the chemical composition of  aluminum alloyed coil contains 97.82% aluminum, 1.17% of silicon, 0.54% of copper 0.35% magnesium, and traces of iron and chromium.  Taguchi method was adopted for optimization of the response parameters and mechanical properties of the cast to obtain the optimum  performance of porosity using density as response factor. The optimal value was obtained with sample specimen 3 with charging masses  of Si = 0.7; Cu = 0.8 and Mg = 0.7 at density of 2.7533 and porosity of 0.3632, while at this optimal value, the following corresponding  values for mechanical properties were obtained: impact = 136/416 Joules; UTS = 58.487 N/mm² ; Hardness = 41HRB, %Elongation =  11.3649; Y.M = 882.3998; Flexural Strength = 105.9556 N/mm2 with a yield strength of 2.0763 N/mm².