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Advanced Powder Characterization For Laser Powder-Bed Fusion Of AlSi10Mg

  • : Alessandro Carrozza1, Abdollah Saboori1, Sara Biamino1, Mariangela Lombardi1, Alberta Aversa1, Giulio Marchese1, Mark Cooper2, Laura Howlett2
  • : 1Politecnico di Torino, 2Renishaw plc
  • : PDF Download
  • : 2018


Laser Powder-Bed Fusion is an additive manufacturing technique that allows to produce complex parts. Apart from process parameters a key component of this system is powder quality which strongly affects processability. In fact a low powder quality in terms of flowability usually results in undesired phenomena such as inadequate parts produced or machine clogging. It is then necessary to accurately determine whether a powder will flow properly or not. Currently the most common flow test used is the Hall flow which lacks accuracy for powders with intermediate properties. Hence the necessity to find new powder characterisation techniques. Varying tests have been performed ranging from flowability particle size distribution powder permeability to compressibility. Some correlations between the flowing behaviour and other powder properties such as permeability have been found. Ranking samples according to their flowability was also possible granting a deeper accuracy level with respect to the simple Hall flow test.


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