Abstract
Fe–Cr–Mo–(Y,Ln)–C–B bulk metallic glasses (Ln are lanthanides) with maximum diameter thicknesses reaching 12 mm have been obtained by casting. The high glass formability is attained despite a low reduced glass transition temperature of 0.58. The inclusion of Y/Ln is motivated by the idea that elements with large atomic sizes can destabilize the competing crystalline phase, enabling the amorphous phase to be formed. It is found that the role of Y/Ln as a fluxing agent is relatively small in terms of glass formability enhancement. The obtained bulk metallic glasses are non-ferromagnetic and exhibit high elastic moduli of approximately 180–200 GPa and microhardness of approximately 13 GPa.
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Ponnambalam, V., Poon, S.J. & Shiflet, G.J. Fe-based bulk metallic glasses with diameter thickness larger than one centimeter. Journal of Materials Research 19, 1320–1323 (2004). https://doi.org/10.1557/JMR.2004.0176
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DOI: https://doi.org/10.1557/JMR.2004.0176