| Abstract Scope |
Aluminum alloys, known for their high strength-to-weight ratio and fatigue resistance, are often used in impellers. A356.1, a specific alloy comprising 91.1-93.2% aluminum, 6.5-7.5% silicon, and 0.3-0.45% magnesium, was studied to evaluate the effects of increasing magnesium content alongside T6 heat treatment. The aim was to enhance solid solution strengthening for impeller applications and a focus on mechanical property improvements were investigated as the threshold for success. Microscopy and mechanical testing revealed improvements in ultimate tensile strength (160 MPa to 164.5 MPa) and hardness (72 HV to 82.27 HV). However, significant porosity from casting issues limited these results. Even when estimating non-porous properties, the enhanced alloy proved insufficient for impeller use. Instead, it shows potential for lower-strength applications, such as aircraft seat frames. |