Journal
JOURNAL OF RARE EARTHS
Volume 35, Issue 10, Pages 1022-1028Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S1002-0721(17)61008-1
Keywords
aluminum-rare earth alloys; eutectic composition; eutectic temperature; equilibrium phase
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Funding
- National Natural Science Foundation of China [21573077, 51373055]
- International Lead and Zinc Research Organization Foundation [ILZRO/IZA/CN201212]
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In order to confirm the eutectic composition, eutectic temperature and phases of Al-rich Al-RE (La, Ce, Pr, Nd) binary systems, the eutectic Al-RE alloys with the controversial compositions were investigated. The scanning electron microscopy/energy dispersive spectroscopy (SEM/EDS), differential scanning calorimetric (DSC) and cooling curve tests analysis indicated that a similar eutectic composition (similar to 12 wt.% RE) on the Al-rich region was observed in the Al-La, Al-Ce, Al-Pr and Al-Nd alloys, and the eutectic structure of the alloys was consisted of alpha-Al and alpha-Al11RE3 phases by combining with X-ray diffraction (XRD) tests. In addition, the eutectic temperatures determined by DSC and cooling curve tests were very close and around 645 degrees C.
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