Direct Natural and Artificial Aging of Aluminum Alloy AlSi10Mg After Laser Powder-bed Fusion Studied by Researchers at University of Rostock

Strategic Insights -

Researchers at the University of Rostock have conducted an in-depth study on the direct natural and artificial aging of aluminum alloy AlSi10Mg after laser powder-bed fusion. The study aimed to investigate the aging behavior of the as-built condition without intermediate solution annealing and quenching, as well as the effect of adding nanoparticles to the powder. The research found that the addition of nanoparticles lowers the maximum hardness level achievable, and the hardening potential for subsequent artificial aging is high for the top part of the samples as well as after short natural aging. However, the hardening potential is substantially reduced for the bottom part of the samples as well as after natural aging of more than a few days.

Key Takeaways:

  • The study found that the aging behavior of the as-built condition without intermediate solution annealing and quenching is analyzed via differential scanning calorimetry, hardness testing, and micro- as well as nano-structural investigations.
  • The addition of nanoparticles lowers the maximum hardness level achievable.
  • The hardening potential for subsequent artificial aging is high for the top part of the samples as well as after short natural aging, but is substantially reduced for the bottom part of the samples as well as after natural aging of more than a few days.
  • The research suggests that the community should manage the process logistics of additive manufacturing and heat treatment in order to achieve desired strength levels for components in service.
  • The study was supported by the German Research Foundation (DFG).
  • Additional authors for this research include Rabea Steuer, Benjamin Milkereit, Jette Broer, Sigurd Wenner, Florian Huber, and Mirko Schaper.

Statistics:

  • The study focused on the direct natural and artificial aging of aluminum alloy AlSi10Mg.
  • According to the study, the hardening potential for subsequent artificial aging is reduced for the bottom part of the samples as well as after natural aging of more than a few days.
  • The study found that the addition of nanoparticles lowers the maximum hardness level achievable.
  • The German Research Foundation (DFG) supported the research.

Sources:

  • Direct Natural and Artificial Aging of Aluminum Alloy AlSi10mg After Laser Powder-bed Fusion. Advanced Engineering Materials, 2025. Advanced Engineering Materials can be contacted at: Wiley-v C H Verlag Gmbh, Postfach 101161, 69451 Weinheim, Germany.
  • NewsRx. Findings from University of Rostock Update Knowledge of Nanoparticles (Direct Natural and Artificial Aging of Aluminum Alloy Alsi10mg After Laser Powder-bed Fusion). News of Science. July 13, 2025; p 1279.