Corrosion behavior of selective laser melted AlSi10Mg alloy in NaCl solution and its dependence on heat treatment
Abstract
This work investigates the corrosion behavior of AlSi10Mg alloy produced by selective laser melting (SLM) and the counterparts heat-treated at 450–550 °C in 3.5 wt% NaCl solution. Electrochemical measurements and weight loss tests together with microstructural characterizations were conducted. The SLM-produced alloy displays a microstructure with a continuous network of Si particles, exhibiting superior corrosion behavior. After heat treatment, the Si particles are coarsened and isolated and Al matrix dissolves into their surrounding area, thereby degrading the corrosion resistance properties. Therefore, the corrosion resistance of AlSi10Mg alloy degrades with increasing the heat treatment temperature. © 2019, The Chinese Society for Metals (CSM) and Springer-Verlag GmbH Germany, part of Springer Nature.
Keywords
Aluminum, Electrochemistry, Pitting corrosion, Selective laser melting, XRDAfter-heat treatment, Aluminum, Aluminum alloys, Aluminum corrosion, Corrosion resistance, Corrosion resistant alloys, Corrosive effects, Electrochemical corrosion, Electrochemistry, Heat resistance, Magnesium alloys, Melting, Pitting, Selective laser melting, Silicon, Sodium alloys, Sodium chloride, Corrosion behavior, Electrochemical measurements, Heat treatment temperature, Micro-structural characterization, Resistance properties, Selective laser melting (SLM), Superior corrosion, Weight loss tests, Silicon alloys
Document Type
Journal Article
Date of Publication
1-1-2020
Publication Title
Acta Metallurgica Sinica (English Letters)
Publisher
Springer
School
School of Engineering
RAS ID
30907
Funders
Science and Technology Commission of Shanghai Municipality, STCSM
Copyright
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Comments
Gu, X. H., Zhang, J. X., Fan, X. L., & Zhang, L. C. (2020). Corrosion Behavior of Selective Laser Melted AlSi10Mg Alloy in NaCl Solution and Its Dependence on Heat Treatment. Acta Metallurgica Sinica (English Letters), 33(3), 327-337. https://doi.org/10.1007/s40195-019-00903-5