Details

Autor(en) / Beteiligte

• Ponnambalam, V.
• Poon, S. Joseph
• Shiflet, Gary J.

Titel

Fe-based bulk metallic glasses with diameter thickness larger than one centimeter

Ist Teil von

• Journal of materials research, 2004-05, Vol.19 (5), p.1320-1323

Ort / Verlag

New York, USA: Cambridge University Press

Erscheinungsjahr

2004

Quelle

SpringerLink_现刊

Beschreibungen/Notizen

• 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.