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Microstructural Characterization and Thermomechanical Behavior of Additively Manufactured AlSi10Mg Material and Architected Cellular Structures

  • Alya Alhammadi
  • Kamran A. KhanEmail author
  • Oraib Al-Ketan
  • Mohamed I. Hassan Ali
  • Reza Rowshan
  • Rashid K. Abu Al-Rub
Conference paper
  • 115 Downloads
Part of the The Minerals, Metals & Materials Series book series (MMMS)

Abstract

Additive manufacturing facilitated the fabrication of novel and new thermal management devices. Of interest, they are lattice-based heat sinks and heat exchangers. The advantage of using lattices to propose novel thermal management devices is the fact that they provide high surface area to volume ratio which maximizes the area of heat transfer in a specific volume. However, since these lattice-based thermal management devices are undergoing large thermal gradients, it is important to investigate their mechanical properties at different temperature. In this work, the potential of employing metallic lattice as heat sinks is studied through mimicking the high temperature operation conditions and the resulting thermomechanical loads experienced by the heat sink. The proposed heat sinks are sheet-based lattices with topologies based on the Schwartz diamond (D) triply periodic minimal surfaces (TPMS). Aluminum Diamond TPMS lattices are additively manufactured and tested under compression at 25 and 150 ℃. Results showed that variation in mechanical properties with temperature was most pronounced at higher relative densities, whereas the variation was minimal in lower relative densities. The results show that AlSi10Mg diamond TPMS lattices have excellent thermal and mechanical properties making them ideal for thermal management applications.

Keywords

Heat sinks Thermal management TPMS Additive manufacturing Powder bed fusion 

Notes

Acknowledgements

This publication is based upon work supported by the Khalifa University of Science and Technology under Award No. CIRA-2018-51.

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Copyright information

© The Minerals, Metals & Materials Society 2020

Authors and Affiliations

  • Alya Alhammadi
    • 1
    • 2
  • Kamran A. Khan
    • 1
    • 3
    Email author
  • Oraib Al-Ketan
    • 1
    • 2
  • Mohamed I. Hassan Ali
    • 1
    • 2
  • Reza Rowshan
    • 4
  • Rashid K. Abu Al-Rub
    • 1
    • 2
    • 3
  1. 1.Advanced Digital & Additive Manufacturing CenterKhalifa University of Science and TechnologyAbu DhabiUAE
  2. 2.Mechanical Engineering DepartmentKhalifa University of Science and TechnologyAbu DhabiUAE
  3. 3.Aerospace Engineering DepartmentKhalifa University of Science and TechnologyAbu DhabiUAE
  4. 4.Core Technology Platforms DivisionNew York University Abu DhabiAbu DhabiUAE

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