Journal of Korea Foundry Society (한국주조공학회지)

Korea Foundry Society (한국주조공학회)
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A Study on the Precipitates in Rapidly Solidified Al-(Fe, Ce) Alloys by Analysis of X-Ray Diffraction

급냉응고된 Al-(Fe, Ce) 합금에서 형성되는 석출상의 X-선적연구

  • Park, Ik-Min (Department of Metallurgical Engineering, Busan National University) ;
  • Lee, Kyu-Han (Department of Metallurgical Engineering, Busan National University) ;
  • Choe, Jeong-Cheol (Department of Materials Engineering, Ajou University) ;
  • Jo, Hyung-Ho (Reserach Center, Korea Mining & Smelting Co., LTD.)
  • 박익민 (부산대학교 공과대학 금속공학과) ;
  • 이규한 (부산대학교 공과대학 금속공학과) ;
  • 최정철 (아주대학교 공과대학 재료공학과) ;
  • 조형호 (한국광업제련 (주) 기술연구소)
  • Published : 1988.12.30
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Abstract

To obtain detailed information on the metastable and the equilibrium phases in rapidly solidified Al-(Fe,Ce) alloys, analysis of X-ray diffraction pattern has been carried out. It has been found that the metastable phase formed in Al-Fe alloys including up to 6wt%Fe is $Al_6Fe$ and the equilibrium phase is $Al_3Fe$. Any X-ray diffraction peak corresponding to the equilibrium phase $Al_{13}Fe_4$ has not been observed during aging. In Al-4wt%Fe alloy, which is ribbon shape with thickness less than $70\;{\mu}m$, aged at $400^{\circ}C$ for 1h after rapid solidification, unidentified phase has been found. In Al-4wt%Ce alloy, only X-ray diffraction peak corresponding to the equilibrium phase, $Al_4Ce$ has been observed. It has been found that the metastable phase Formed in Al-Fe-Ce alloys including up to 6wt% Fe and 4wt% Ce is $Al_6Fe$ and the equilibrium phases are $Al_3Fe$ and $Al_{10}CeFe_2$.

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