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The Influence Of Powder Ageing Characteristics On AlSI10Mg Aluminium Alloy Processed By Laser Based Powder Bed Fusion

  • : Keith Murray1, Martin Kearns1, Paul Davies1, Nicholas Lavery2, Steve Brown2, Johann Sienz2, Julian Evans2, Stuart Sillars2
  • : 1Sandvik Osprey Ltd, 2University of Swansea
  • : PDF Download
  • : 2018

Abstract

As Additive Manufacturing evolves from prototyping to series part production several technical challenges need to be resolved to accelerate adoption of the technology across a wider range of markets. A major challenge is improving part-to-part consistency. It is recognised that one factor that influences the consistency of the laser based powder bed fusion process is the ageing of the metal powder used to manufacture parts that is to say how the properties of the powder change following repeated used in repeated build cycles. Whilst commercial powder producers can exercise tight control over the ‘as received’ powder changes that can subsequently occur following exposure to repeated process cycles in the laser beam melting machine warrant separate investigation. In this paper we examine the changes that occur to the characteristics of gas atomised AlSi10Mg Alumium alloy following mulipe build cycles. We also relate these changes to the build quality of the processed

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