Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Synthesis of Al-Ni-Co-Y Bulk Metallic Glass fabricated by Spark Plasma Sintering

방전 플라즈마 소결법을 이용한 Al-Ni-Co-Y 벌크 비정질 합금의 제조

  • Jeong Pyo Lee (Division of Advanced Materials Engineering, Kongju National University) ;
  • Jin Kyu Lee (Division of Advanced Materials Engineering, Kongju National University)
  • 이정표 (공주대학교 신소재공학부) ;
  • 이진규 (공주대학교 신소재공학부)
  • Received : 2023.02.14
  • Accepted : 2023.02.24
  • Published : 2023.02.28
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Abstract

In this study, an Al82Ni7Co3Y8 (at%) bulk metallic glass is fabricated using gas-atomized Al82Ni7Co3Y8 metallic glass powder and subsequent spark plasma sintering (SPS). The effect of powder size on the consolidation of bulk metallic glass is considered by dividing it into 5 ㎛ or less and 20-45 ㎛. The sintered Al82Ni7Co3Y8 bulk metallic glasses exhibit crystallization behavior and crystallization enthalpy similar to those of the Al82Ni7Co3Y8 powder with 5 ㎛ or less and it is confirmed that no crystallization occurred during the sintering process. From these results, we conclude that the Z-position-controlled spark plasma sintering process, using superplastic deformation by viscous flow in the supercooled liquid-phase region of amorphous powder, is an effective process for manufacturing bulk metallic glass.

Keywords

Acknowledgement

이 논문은 2022년 공주대학교 학술연구지원사업의 연구지원으로 연구되었으며 이에 감사드립니다.

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