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Effects of process parameters on strengthening mechanisms of additively manufactured AlSi10Mg

  • İstemihan Gökdağ

    İstemihan Gökdağ received his BSc and MSc degrees in Mechanical Engineering from TOBB University of Economics and Technology in 2017 and 2021, respectively. He works at Turkish Aerospace Industries Inc., and his main fields of interests include additive manufacturing of aircraft structural components and topology optimization.

     ORCID logo EMAIL logo     and Erdem Acar

    Dr. Erdem Acar is a professor in the Department of Mechanical Engineering, TOBB University of Economics and Technology, Ankara, Türkiye. His research interests include optimization, design of automobile and aircraft structures, finite element analysis, ballistic simulations, and uncertainty analysis. He is an associate fellow of the American Institute of Aeronautics and Astronautics (AIAA) and he has been serving as a Review Editor for the Journal of Structural and Multidisciplinary Optimization, Springer, since 2017.

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Published/Copyright: March 8, 2023
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Materials Testing
From the journal Materials Testing Volume 65 Issue 3

Abstract

In industries like automotive and aerospace, the demand for structures with a high strength-weight ratio is increasing. Additive manufacturing (AM) studies and applications of AlSi10Mg material have increased due to the improvement of mechanical properties when the production is performed at high cooling rates in the laser-powder bed fusion (L-PBF) method. The study aims to investigate the effect of the AM process parameters on the microstructure features, and determine the mathematical relationship between yield strength and process parameters to obtain better mechanical properties. In this study, AlSi10Mg specimens are manufactured using L-PBF method with different process parameters. Microstructure images of the manufactured specimens are obtained by scanning electron microscopy. Melt pool width, eutectic cell size and diameter of Si precipitates are measured using the microstructure images. Parametric equations are generated between the process parameters and microstructural features including eutectic cell size and Si precipitate diameter. Thus, relationships between strengthening mechanisms and process parameters are established by integrating the generated equations into the related strengthening mechanisms. Consequently, the yield strength model of AlSi10Mg material is developed as a function of the process parameters of L-PBF method. It is found that the developed model estimates close results to the nano-indentation results.

Keywords: additive manufacturing; aluminum alloys; laser-powder bed fusion; microstructure; strengthening mechanisms
Corresponding author: İstemihan Gökdağ, Additive Manufacturing Division, Turkish Aerospace Industries Inc., Ankara, Türkiye; and Department of Mechanical Engineering, TOBB University of Economics and Technology, Sogutozu Cad. No:43, Cankaya, Ankara, 06560, Türkiye, E-mail:

Funding source: Türkiye Bilimsel ve Teknolojik Arastirma Kurumu

Award Identifier / Grant number: 5189901

About the authors

İstemihan Gökdağ

İstemihan Gökdağ received his BSc and MSc degrees in Mechanical Engineering from TOBB University of Economics and Technology in 2017 and 2021, respectively. He works at Turkish Aerospace Industries Inc., and his main fields of interests include additive manufacturing of aircraft structural components and topology optimization.

Erdem Acar

Dr. Erdem Acar is a professor in the Department of Mechanical Engineering, TOBB University of Economics and Technology, Ankara, Türkiye. His research interests include optimization, design of automobile and aircraft structures, finite element analysis, ballistic simulations, and uncertainty analysis. He is an associate fellow of the American Institute of Aeronautics and Astronautics (AIAA) and he has been serving as a Review Editor for the Journal of Structural and Multidisciplinary Optimization, Springer, since 2017.

Acknowledgement

The authors acknowledge the support of EKTAM for manufacturing specimens, UNAM for SEM and nano-indentation, Dr. Gülten Kafadar for her help in SEM and nano-indentation measurements and Additive Manufacturing Technology Center of Turkish Aerospace Industries for supporting the study.

  1. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: This study is a part of the project (# 5189901) supported by The Scientific and Technological Research Council of Turkey (TÜBİTAK) under the Frontier R&D Laboratory Support Programme and performed in Turkish Aerospace Industries Inc. This work was funded by The Scientific and Technological Research Council of Turkey (TÜBİTAK) (5189901)

  3. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Published Online: 2023-03-08
Published in Print: 2023-03-28

© 2023 Walter de Gruyter GmbH, Berlin/Boston

Articles in the same Issue

  1. Frontmatter
  2. Effect of alloying elements on mechanical behaviour of Cu-Zn-Sn bronzes
  3. Effects of boron waste as a reinforcement in the production of Al composite foams
  4. Buckling in rectangular hybrid composite plates with angled groove-shaped cut-outs
  5. Experimental and numerical investigation of crashworthiness performance for optimal automobile structures using response surface methodology and oppositional based learning differential evolution algorithm
  6. Effects of deep cryogenic treatment with different holding times on the mechanical properties of Al 7050-T7451 alloy friction stir welding
  7. Additive manufacturing and characterization of a stainless steel and a nickel alloy
  8. Shear strain rate sensitivity and crystallisation kinetics investigation in melt spun Cu64Zr36 binary metallic glass
  9. Microstructure analysis, constitutive relationship, and processing map of novel pre-aged Mg-Zn-Gd-Er alloy with different deformation ranges
  10. Effects of process parameters on strengthening mechanisms of additively manufactured AlSi10Mg
  11. Comparison of notch fabrication methods on the impact strength of FDM-3D-printed PLA specimens
  12. Hydride formation mechanisms in Zr-containing amorphous alloys during sample preparation and atom probe tomography
  13. Taper connection strength of revision heads with adapter sleeves compared to standard heads made of ceramics
  14. Investigation of glass/epoxy laminate composites reinforced with bio-particles under mechanical loading
  15. Nondestructive microstructural characterization of austempered ductile iron
https://doi.org/10.1515/mt-2022-0449
Keywords for this article
additive manufacturing; aluminum alloys; laser-powder bed fusion; microstructure; strengthening mechanisms

Articles in the same Issue

  1. Frontmatter
  2. Effect of alloying elements on mechanical behaviour of Cu-Zn-Sn bronzes
  3. Effects of boron waste as a reinforcement in the production of Al composite foams
  4. Buckling in rectangular hybrid composite plates with angled groove-shaped cut-outs
  5. Experimental and numerical investigation of crashworthiness performance for optimal automobile structures using response surface methodology and oppositional based learning differential evolution algorithm
  6. Effects of deep cryogenic treatment with different holding times on the mechanical properties of Al 7050-T7451 alloy friction stir welding
  7. Additive manufacturing and characterization of a stainless steel and a nickel alloy
  8. Shear strain rate sensitivity and crystallisation kinetics investigation in melt spun Cu64Zr36 binary metallic glass
  9. Microstructure analysis, constitutive relationship, and processing map of novel pre-aged Mg-Zn-Gd-Er alloy with different deformation ranges
  10. Effects of process parameters on strengthening mechanisms of additively manufactured AlSi10Mg
  11. Comparison of notch fabrication methods on the impact strength of FDM-3D-printed PLA specimens
  12. Hydride formation mechanisms in Zr-containing amorphous alloys during sample preparation and atom probe tomography
  13. Taper connection strength of revision heads with adapter sleeves compared to standard heads made of ceramics
  14. Investigation of glass/epoxy laminate composites reinforced with bio-particles under mechanical loading
  15. Nondestructive microstructural characterization of austempered ductile iron
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