Modeling of Solute-Dependent Fluidity and Hot Tearing Sensitivity of Conductive Aluminum Alloys

摘要

Empirical models have been developed to predict fluidity and hot tearing sensitivity of conductive aluminum alloys. An orthogonal test of 4 factors and 4 levels was designed to evaluate the effect of solute content of Si, Mg, Cu and Fe in conductive aluminum alloy on fluidity and hot tearing sensitivity (HTS). Results showed that Si, Mg and Cu elements have positive effect on fluidity and increasing their contents improves the fluidity. The effect of Fe content on fluidity is negative. For HTS, the effect of Si and Mg is negative while Cu and Fe is positive. Multi-element linear/non-linear polynomial regressions are adopted to construct the solute-dependent empirical models for fluidity and HTS. The predicted results based on the empirical models agree well with the verification tests.