Drying strategies to reduce the formation of hydrogen porosity in Al alloys produced by Additive Manufacturing

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Abstract

Laser powder bed fusion (L-PBF) is an additive manufacturing (AM) technology using a high-power laser to selectively melt metal powders for building complex parts. Coping with contamination in the powder is usually a challenge for this technology. Gases entrapped in the material in contact with the laser create a plasma of impurities that can lead to porosity. This contamination is usually coming from moisture, organics and adsorbed gases from the atmosphere (i.e. oxygen and nitrogen). In this work, two drying strategies to reduce the formation of porosity will be investigated.
Original languageEnglish
Publication statusPublished - 2019
EventVII Congreso Español de Pulvimetalurgia y II Congreso Iberoamericano de Pulvimetalurgia, CEIPM 2019 - Madrid, Spain
Duration: 24 Jun 201926 Jun 2019
Conference number: 7

Conference

ConferenceVII Congreso Español de Pulvimetalurgia y II Congreso Iberoamericano de Pulvimetalurgia, CEIPM 2019
Abbreviated titleCEIPM
CountrySpain
CityMadrid
Period24/06/1926/06/19

Keywords

  • Additive manufacturing
  • Aluminum alloys
  • Porosity
  • Al alloys
  • AlSi10Mg
  • Drying
  • L-PBF (Laser Powder Bed Fusion)
  • Moisture

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    Cordova, L., Bor, T., Campos, M., & Tinga, T. (2019). Drying strategies to reduce the formation of hydrogen porosity in Al alloys produced by Additive Manufacturing. Paper presented at VII Congreso Español de Pulvimetalurgia y II Congreso Iberoamericano de Pulvimetalurgia, CEIPM 2019, Madrid, Spain.