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Effect of Post-heat Treatment on the Corrosion Behavior of AlSi10Mg Alloy Produced by Additive Manufacturing

  • Amit ZakayEmail author
  • Eli Aghion
Technical Article


Additive manufacturing processes are becoming attractive technologies for producing complex components in relatively a short time and at reasonable cost. The present study aims to evaluate the effect of post-heat treatment on the corrosion performance of AlSi10Mg alloy produced by selective laser melting (SLM). Heat treatment up to 400°C for 2 h was tested. Microstructure evaluation was carried out using optical and scanning electron microscopy, along with x-ray diffraction assessment and photoelectron spectroscopy analysis. Corrosion performance was studied by salt spray testing, potentiodynamic polarization and electrochemical impedance spectroscopy for general corrosion assessment, while slow strain rate testing and low cycle corrosion fatigue were employed for stress corrosion examination. The obtained results indicated that relatively improved corrosion performance was achieved by heat treatment at 200–300°C. This was mainly attributed to the preservation of the fine Si net embedded in the α-Al matrix that was obtained during the SLM process and the adequate residual stress relief conditions.



The authors thank Sharon Tuvia, Ltd. for preparation of 3D-printed specimens by SLM, and A. Leon and V. Pearl from Ben-Gurion University for assistance with the experimental work.


Funding was provided by Ben-Gurion University of the Negev.


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Copyright information

© The Minerals, Metals & Materials Society 2019

Authors and Affiliations

  1. 1.Department of Materials EngineeringBen-Gurion University of the NegevBeershebaIsrael

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