Journal
MATERIALS LETTERS
Volume 62, Issue 23, Pages 3790-3792Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2008.03.063
Keywords
metals and alloys; powder technology; amorphous powders; crystallization
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Amorphous aluminum alloy powders with compositions of Al85Y7Fe8, Al83Y7Fe8Ti2, and Al79Y7Fe8Ni3Ti2Nd1 were synthesized with crystallization temperatures of 342 degrees C, 446 degrees C, and 457 degrees C, respectively. In-situ high-temperature synchrotron diffraction results were correlated with differential scanning calorimetry studies to investigate the structural evolution during the crystallization. The results show that, through microalloying, the onset-of-crystallization temperature was increased by 115 degrees C, and the resulting crystalline products changed from a mixture of fcc-Al and an intermetallic phase in the case of Al85Y7Fe8 to only intermetallic phases. (C) 2008 Elsevier B.V. All rights reserved.
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