Bulk Scandium-based Metallic Glasses

The novel rare-earth scandium-based bulk metallic glasses (BMGs) are obtained by the copper mold casting method. Compared with other rare-earth BMGs reported so far, the Sc-based BMGs exhibit the highest elastic moduli (e.g., Young’s modulus, E = 85 GPa; bulk modulus, B = 77.5 GPa), glass transition...

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Bibliographic Details
Published in:Journal of materials research 2005-09, Vol.20 (9), p.2243-2247
Main Authors: Xi, X.K., Li, S., Wang, R.J., Zhao, D.Q., Pan, M.X., Wang, W.H.
Format: Article
Language:English
Subjects:
Casting
Elastic properties
Metallic glass
Rapid Communications
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Summary:The novel rare-earth scandium-based bulk metallic glasses (BMGs) are obtained by the copper mold casting method. Compared with other rare-earth BMGs reported so far, the Sc-based BMGs exhibit the highest elastic moduli (e.g., Young’s modulus, E = 85 GPa; bulk modulus, B = 77.5 GPa), glass transition temperature (Tg = 662 K), and crystallization temperature (Tx = 760 K) combined with a large region of supercooled liquid (ΔT = 98 K). A good correlation between glass transition temperature and elastic moduli is found in a variety of rare-earth-based BMGs.
ISSN:0884-2914
2044-5326
DOI:10.1557/jmr.2005.0281