Effect of growth orientation and heat treatment on the corrosion properties of AlSi10Mg alloy produced by additive manufacturing

Hypoeutectic Al-Si alloys are widely used due to its excellent castability, corrosion resistance and mechanical properties. Its corrosion resistance is limited by the presence of coarse Si particles. Additive Manufacturing (AM) processes is a powerful alternative to overcome such problems. Although mechanical properties of samples produced by AM have been extensively researched, corrosion resistance has received much less attention. In the present paper, Selective Laser Melting (SLM) was used to obtain cubes of AlSi10Mg using two different growth strategies. Corrosion properties are compared both the stress relief thermal treatment and the growth strategy for the manufacturing of the alloy.(c) 2022 The Author(s). Published by Elsevier B.V.

Automated summary

Hypoeutectic Al-Si alloys are widely used for their excellent castability, corrosion resistance, and mechanical properties. However, the presence of coarse Si particles limits their corrosion resistance. Additive Manufacturing (AM) processes provide an effective solution to this problem. This study employed Selective Laser Melting (SLM) to produce AlSi10Mg samples using two different growth strategies. The corrosion properties were compared between stress relief thermal treatment and growth strategy for alloy manufacturing.