Combining Aluminum Heat Treat with Hot Isostatic Pressing: A Comparison of Structure, Properties, and Processing Routes for a Cast AI-Si-Mg Alloy

WHEN CAST ALUMINUM COMPONENTS are usedin applications which require high strength,a T6heattreatment is often employed to bring the castings to amaximum strength condition.This heat treatmentconsists of three steps:a solution heat treatment,duringwhich the large deleterious phases which have formedduring solidification are dissolved into a solid solution;quenching,to produce a supersaturated solid solution;and an aging treatment which yields a microstructureconsisting of a fine array …