Welding in the World

, Volume 62, Issue 4, pp 885–892 | Cite as

Selective laser melting of AlSi10Mg alloy: influence of heat treatment condition on mechanical properties and microstructure

  • A. IturriozEmail author
  • E. Gil
  • M. M. Petite
  • F. Garciandia
  • A. M. Mancisidor
  • M. San Sebastian
Research Paper
Part of the following topical collections:
  1. Welding, Additive Manufacturing and Associated NDT


AlSi10Mg is the Al alloy most applied for selective laser melting (SLM) processing studies. The characteristics and the density obtained for SLM-processed material is extremely influenced by the quality of the starting powder. Since the microstructure obtained after SLM is often metastable, the required heat treatment to obtain an “optimized” microstructure can be significantly different than the one applied to conventionally cast or wrought Al alloys. In the present work, different thermal treatments have been applied to samples manufactured by SLM in order to investigate the effect on the microstructure and mechanical properties. The microstructural evaluation has been performed by SEM analysis and the mechanical properties have been determined by hardness measurements and tensile tests. Samples in the as-built condition, after stress relieving and under T6 heat treatment have been investigated to determine the best combination of properties.


Selective laser melting (SLM) AlSi10Mg Heat treatments Microstructure Mechanical properties 


  1. 1.
    Li Y, Gu D (2014) Parametric analysis of thermal behavior during selective laser melting additive manufacturing of aluminum alloy powder. Mater Des 63:856–867CrossRefGoogle Scholar
  2. 2.
    Voncina M, Mrvar P, Medved J (2005) Thermodynamic analysis of AlSi10Mg alloy = termodinamicna analiza zlitine AlSi10Mg. RMZ-Mater Geoenviron 52(3):621–633Google Scholar
  3. 3.
    Jordović B, Nedeljković B, Mitrović N, Živanić J, Maričić A (2014) Effect of heat treatment on structural changes in metastable AlSi10Mg alloy. J Min Metall Sect B Metall 50(2):133–137CrossRefGoogle Scholar
  4. 4.
    Li W, Li S, Liu J, Zhang A, Zhou Y, Wei Q, Yan C, Shi Y (2016) Effect of heat treatment on AlSi10Mg alloy fabricated by selective laser melting: microstructure evolution, mechanical properties and fracture mechanism. Mater Sci Eng A 663:116–125CrossRefGoogle Scholar
  5. 5.
    Louvis E, Fox P, Sutcliffe CJ (2011) Selective laser melting of aluminium components. J Mater Process Technol 211(2):275–284CrossRefGoogle Scholar
  6. 6.
    Kempen K (2015) “Expanding the materials palette for Selective Laser Melting of metals,” Thesis, KU Leuven UniversityGoogle Scholar
  7. 7.
    Aboulkhair NT, Everitt NM, Ashcroft I, Tuck C (2014) Reducing porosity in AlSi10Mg parts processed by selective laser melting. Addit Manuf 1:77–86CrossRefGoogle Scholar
  8. 8.
    Aboulkhair NT, Maskery I, Ashcroft I, Tuck C, Everitt NM (2015) “The role of powder properties on the processability of Aluminium alloys in selective laser melting,” Laser Manuf. Conf. 2015, no. JUNEGoogle Scholar
  9. 9.
    Lumley RN, Polmear IJ, Groot H, Ferrier J (2008) Thermal characteristics of heat-treated aluminum high-pressure die-castings. Scr Mater 58(11):1006–1009CrossRefGoogle Scholar
  10. 10.
    Kempen K, Thijs L, Van Humbeeck J, Kruth J-P (2015) Processing AlSi10Mg by selective laser melting: parameter optimisation and material characterisation. Mater Sci Technol 31(8):917–923CrossRefGoogle Scholar
  11. 11.
    Aboulkhair NT, Maskery I, Tuck C, Ashcroft I, Everitt NM (2016) The microstructure and mechanical properties of selectively laser melted AlSi10Mg: the effect of a conventional T6-like heat treatment. Mater Sci Eng A 667:139–146CrossRefGoogle Scholar
  12. 12.
    Thijs L, Kempen K, Kruth JP, Van Humbeeck J (2013) Fine-structured aluminium products with controllable texture by selective laser melting of pre-alloyed AlSi10Mg powder. Acta Mater 61(5):1809–1819CrossRefGoogle Scholar
  13. 13.
    Aboulkhair NT, Tuck C, Ashcroft I, Maskery I, Everitt NM (2015) On the precipitation hardening of selective laser melted AlSi10Mg. Metall Mater Trans A 46(8):3337–3341CrossRefGoogle Scholar
  14. 14.
    Phongphisutthinan C, Tezuka H, Kobayashi E, Sato T (2013) Effects of β-Mg2Si precipitates on semi-solid microstructures of wrought Al–Mg–Si based alloys produced by deformation-semi-solid-forming process. Mater Trans 54(4):609–617CrossRefGoogle Scholar
  15. 15.
    Dybowski B, Szymszal J, Poloczek Ł, Kiełbus A (Jan. 2016) Influence of the chemical composition on electrical conductivity and mechanical properties of the hypoeutectic Al-Si-Mg alloys. Arch Metall Mater 61(1):353–360Google Scholar
  16. 16.
    Dobkowska A, Adamczyk-Cieślak B, Mizera J, Kurzydłowski KJ, Kiełbus A (2016) The comparison of the microstructure and corrosion resistance of sand cast aluminum alloys. Arch Metall Mater 61(1):209–212CrossRefGoogle Scholar
  17. 17.
    Kempen K, Thijs L, Van Humbeeck J, Kruth J-P (2012) Mechanical properties of AlSi10Mg produced by selective laser melting. Phys Procedia 39:439–446CrossRefGoogle Scholar
  18. 18.
    Lam LP, Zhang DQ, Liu ZH, Chua CK (2015) Phase analysis and microstructure characterisation of AlSi10Mg parts produced by selective laser melting. Virtual Phys Prototyp 10(4):207–215CrossRefGoogle Scholar
  19. 19.
    Abis S, Caciuffo R, Coppola R, Magnani M, Rustichelli F, Stefanon M (1986) Small angle neutron scattering investigation of the ageing process in Al-Mg-Si alloy. Phys B+C 136(1–3):469–472CrossRefGoogle Scholar
  20. 20.
    Tradowsky U, White J, Ward RM, Read N, Reimers W, Attallah MM (2016) Selective laser melting of AlSi10Mg: influence of post-processing on the microstructural and tensile properties development. Mater Des 105:212–222CrossRefGoogle Scholar
  21. 21.
    Read N, Wang W, Essa K, Attallah MM (2015) Selective laser melting of AlSi10Mg alloy: process optimisation and mechanical properties development. Mater Des 65:417–424CrossRefGoogle Scholar

Copyright information

© International Institute of Welding 2018

Authors and Affiliations

  • A. Iturrioz
    • 1
    Email author
  • E. Gil
    • 1
  • M. M. Petite
    • 1
  • F. Garciandia
    • 1
  • A. M. Mancisidor
    • 1
  • M. San Sebastian
    • 1
  1. 1.IK4-LORTEKOrdiziaSpain

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