Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Manufacture of AlSi10Mg Alloy Powder for Powder Bed Fusion(PBF) Process using Gas Atomization Method

가스 분무법을 이용한 Powder Bed Fusion(PBF) 공정용 AlSi10Mg 합금 분말 제조

  • 임원빈 (한국산업기술대학교 생명화학공학과) ;
  • 박승준 (한국산업기술대학교 생명화학공학과) ;
  • 윤여춘 ((주)엠케이티) ;
  • 김병철 ((주)엠케이티)
  • Received : 2021.04.06
  • Accepted : 2021.04.26
  • Published : 2021.04.28
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Abstract

In this study, AlSi10Mg alloy powders are synthesized using gas atomization and sieving processes for powder bed fusion (PBF) additive manufacturing. The effect of nozzle diameter (ø = 4.0, 4.5, 5.0 and 8.0 mm) on the gas atomization and sieving size on the properties of the prepared powder are investigated. As the nozzle diameter decreases, the size of the manufactured powder decreases, and the uniformity of the particle size distribution improves. Therefore, the ø 4.0 mm nozzle diameter yields powder with superior properties. Spherically shaped powders can be prepared at a scale suitable for the PBF process with a particle size distribution of 10-45 ㎛. The Hausner ratio value of the powder is measured to be 1.24. In addition, the yield fraction of the powder prepared in this study is 26.6%, which is higher than the previously reported value of 10-15%. These results indicate that the nozzle diameter and the post-sieve process simultaneously influence the shape of the prepared powder as well as the satellite powder on its surface.

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