Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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A Study on Powder Size Dependence of Additive Manufactured AlCrFeNi HEA on Its Microstructure and Mechanical Properties

3D 프린팅으로 제작된 AlCrFeNi 고엔트로피 합금의 분말 입도에 따른 특성 분석

  • Choi, Jong Woo (Department of Nanotechnology and Advanced Materials Engineering, Sejong University) ;
  • Park, Hae Jin (Department of Nanotechnology and Advanced Materials Engineering, Sejong University) ;
  • Kang, Gyeol Chan (Department of Nanotechnology and Advanced Materials Engineering, Sejong University) ;
  • Jung, Min Seob (Department of Nanotechnology and Advanced Materials Engineering, Sejong University) ;
  • Oh, Ki Tae (Department of Nanotechnology and Advanced Materials Engineering, Sejong University) ;
  • Hong, Sung Hwan (Department of Nanotechnology and Advanced Materials Engineering, Sejong University) ;
  • Kim, Hyun Gil (Nuclear Fuel Safety Division, Korea Atomic Energy Research Institute) ;
  • Kim, Ki Buem (Department of Nanotechnology and Advanced Materials Engineering, Sejong University)
  • 최종우 (세종대학교 나노신소재공학과) ;
  • 박혜진 (세종대학교 나노신소재공학과) ;
  • 강결찬 (세종대학교 나노신소재공학과) ;
  • 정민섭 (세종대학교 나노신소재공학과) ;
  • 오기태 (세종대학교 나노신소재공학과) ;
  • 홍성환 (세종대학교 나노신소재공학과) ;
  • 김현길 (한국원자력연구원 핵연료안전연구부) ;
  • 김기범 (세종대학교 나노신소재공학과)
  • Received : 2022.02.17
  • Accepted : 2022.02.24
  • Published : 2022.02.28
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Abstract

Conventionally, metal materials are produced by subtractive manufacturing followed by melting. However, there has been an increasing interest in additive manufacturing, especially metal 3D printing technology, which is relatively inexpensive because of the absence of complicated processing steps. In this study, we focus on the effect of varying powder size on the synthesis quality, and suggest optimum process conditions for the preparation of AlCrFeNi high-entropy alloy powder. The SEM image of the as-fabricated specimens show countless, fine, as-synthesized powders. Furthermore, we have examined the phase and microstructure before and after 3D printing, and found that there are no noticeable changes in the phase or microstructure. However, it was determined that the larger the powder size, the better the Vickers hardness of the material. This study sheds light on the optimization of process conditions in the metal 3D printing field.

Keywords

Acknowledgement

이 논문은 2018년도 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구임(NRF-2018R1A2B3007167).

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