Journal
INTERMETALLICS
Volume 16, Issue 1, Pages 52-57Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.intermet.2007.07.015
Keywords
glasses; metallic; casting; phase stability; prediction; calorimetry; magnetic applications
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Bulk metallic glasses (BMGs) Fe-B-Y-Nb-Cu, 2 mm in diameter, were successfully annealed to become bulk nano-crystalline alloys (BNCAs) with alpha-Fe crystallite 11-13 nm in size. A 'crystallization-and-stop' model was proposed to explain this behavior. Following this model, alloy-design criteria were elucidated and testified successful on another Fe-based BMGs Fe-B-Si-Nb-Cu, 1 mm in diameter, with crystallite sizes 10-40 nm. It was concluded that BNCAs can be designed in general by the proposed criteria. (c) 2007 Elsevier Ltd. All rights reserved.
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