Low Surface Roughness Additively Manufactured AlSi10Mg: The Impacts on Corrosion and Water Repellency Properties

  • P. Fathi
  • M. Mohammadi
  • A. M. NasiriEmail author
Conference paper
Part of the The Minerals, Metals & Materials Series book series (MMMS)


One of the main challenges associated with the additive manufacturing of metallic components and in particular aluminum alloys is the high surface roughness of the parts obtained in as-printed condition, which can detrimentally affect their corrosion behavior and fatigue performance. The present study aims to improve the surface roughness of as-printed AlSi10Mg parts produced by direct metal laser sintering (DMLS) through modifying the DMLS process parameters. The electrochemical properties and corrosion resistance of the obtained surfaces were investigated by performing anodic potentiodynamic polarization and electrochemical impedance spectroscopy, and the wettability of the fabricated surfaces was evaluated by measuring the static and dynamic contact angles on each surface. A comprehensive microstructural analysis of each sample was also conducted using optical microscopy, scanning electron microscopy, and scanning Kelvin probe force microscopy to reveal the correlation of the used DMLS process parameters and the obtained surface properties.


Additive manufacturing DMLS AlSi10Mg Surface roughness Hydrophobicity Corrosion Microstructure 


  1. 1.
    Calignano F, Manfredi D, Ambrosio EP et al (2013) Influence of process parameters on surface roughness of aluminum parts produced by DMLS. Int J Adv Manuf Technol 67:2743–2751. Scholar
  2. 2.
    Fathi P, Rafieazad M, Duan X et al (2019) On microstructure and corrosion behaviour of AlSi10Mg alloy with low surface roughness fabricated by direct metal laser sintering. Corros Sci 157:126–145.
  3. 3.
    Fathi P, Mohammadi M, Duan X, Nasiri AM (2019) Effects of surface finishing procedures on corrosion behavior of DMLS-AlSi10Mg _ 200C Alloy Versus Die-Cast A360. 1 Aluminum. JOM 71:1748–1759. Scholar
  4. 4.
    Fathi P, Mohammadi M, Duan X, Nasiri AM (2018) A comparative study on corrosion and microstructure of direct metal laser sintered AlSi10Mg_200C and die cast A360.1 aluminum. J Mater Process Technol 259.
  5. 5.
    Leon A, Aghion E (2017) Effect of surface roughness on corrosion fatigue performance of AlSi10Mg alloy produced by Selective Laser Melting (SLM). Mater Charact 131:188–194.
  6. 6.
    Cabrini M, Lorenzi S, Pastore T et al (2016) Evaluation of corrosion resistance of Al–10Si–Mg alloy obtained by means of Direct Metal Laser Sintering. J Mater Process Tech 231:326–335. Scholar
  7. 7.
    Boinovich LB, Emelyanenko AM, Modestov AD et al (2015) Synergistic effect of superhydrophobicity and oxidized layers on corrosion resistance of aluminum alloy surface textured by nanosecond laser treatment. ACS Appl Mater Interfaces 7:19500–19508. Scholar
  8. 8.
    Wang N, Xiong D (2014) Superhydrophobic membranes on metal substrate and their corrosion protection in different corrosive media. Appl Surf Sci 305:603–608.
  9. 9.
    Wenzel RN (1949) Surface roughness and contact angle. J Phys Colloid Chem 53:1466–1467. Scholar
  10. 10.
    Ogihara H, Xie J, Saji T (2013) Factors determining wettability of superhydrophobic paper prepared by spraying nanoparticle suspensions. Colloids Surf A Physicochem Eng Asp 434:35–41.
  11. 11.
    Revilla RI, Liang J, Godet S, De Graeve I (2017) Local corrosion behavior of additive manufactured AlSiMg alloy assessed by SEM and SKPFM. J Electrochem Soc 164:C27–C35. Scholar
  12. 12.
    Rafieazad M, Mohammadi M, Nasiri AM (2019) On microstructure and early stage corrosion performance of heat treated direct metal laser sintered AlSi10Mg. Addit Manuf 28:107–119.
  13. 13.
    Cabrini M, Lorenzi S, Pastore T et al (2016) Effect of heat treatment on corrosion resistance of DMLS AlSi10Mg alloy. Electrochim Acta 206:346–355. Scholar
  14. 14.
    Cabrini M, Calignano F, Fino P et al (2018) Corrosion behavior of heat-treated AlSi10Mg manufactured by laser powder bed fusion. Materials (Basel) 11.
  15. 15.
    Cabrini M, Lorenzi S, Testa C et al (2019) Statistical approach for electrochemical evaluation of the effect of heat treatments on the corrosion resistance of AlSi10Mg alloy by laser powder bed fusion. Electrochim Acta 305:459–466.
  16. 16.
    Gu X, Zhang J, Fan X et al (2019) Abnormal corrosion behavior of selective laser melted AlSi10Mg alloy induced by heat treatment at 300 °C. J Alloys Compd 803:314–324.
  17. 17.
    Cabrini M, Lorenzi S, Pastore T et al (2019) Corrosion behavior of AlSi10Mg alloy produced by laser powder bed fusion under chloride exposure. Corros Sci 152:101–108.

Copyright information

© The Minerals, Metals & Materials Society 2020

Authors and Affiliations

  1. 1.Faculty of Engineering and Applied ScienceMemorial University of NewfoundlandSt. John’sCanada
  2. 2.Marine Additive Manufacturing Centre of Excellence (MAMCE)University of New BrunswickFrederictonCanada

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