Journal of Korea Foundry Society (한국주조공학회지)

Korea Foundry Society (한국주조공학회)
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Properties of Bulk and Powder of $Al_{86}Ni_6Ce_4Mg_4$ Amorphous Alloy Produced by He Gas Atomization

헬륨가스분사법으로 제조된 $Al_{86}Ni_6Ce_4Mg_4$ 비정질합금 분말과 성형재의 특성

  • Bae, Cha-Hurn (Dept. of Materials Eng., Pukyong National University) ;
  • Kim, Sung-Gyoo (Dept. of Production & Welding Eng., Pukyong National University) ;
  • Lee, Byung-Woo (Dept. of Production & Welding Eng., Pukyong National University) ;
  • Park, Heung-Il (Dept. of Materials Eng., Pukyong National University) ;
  • Jeong, Hae-Yong (Dept. of Materials Eng., Pukyong National University)
  • 배차헌 (부경대학교 공과대학 재료공학과) ;
  • 김성규 (부경대학교 공과대학 생산가공공학과) ;
  • 이병우 (부경대학교 공과대학 생산가공공학과) ;
  • 박홍일 (부경대학교 공과대학 재료공학과) ;
  • 정해용 (부경대학교 공과대학 재료공학과)
  • Published : 1997.04.20
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Abstract

Properties of $Al_{86}Ni_6Ce_4Mg_4$ alloy powder produced by helium gas atomization process were investigated by using DSC, XRD, SEM and TEM. The powders below 32 ${\mu}m$ in diameter were identified as an amorphous phase mixed with a ${\alpha}-Al$ phase. $Al_{86}Ni_6Ce_4Mg_4$ bulk alloy was manufactured by hot extruding the alloy powders at various temperatures, and the estimation of its mechanical properties was carried out subsequently. As a result, the bulk alloy extruded at the temperature below $450^{\circ}C$ exhibited the microstructure in which the near-spherical shape of some powders below 20 ${\mu}m$ were nearly unchanged and fine voids between matrix and powders were formed during extrusion process. On the other hand, the tensile strength and elongation at room temperature for $Al_{86}Ni_6Ce_4Mg_4$ bulk alloy extruded at $450^{\circ}C$ were 750 MPa and 7.5%, respectively.

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