Improvement of glass-forming ability and phase separation in Cu Ti-rich

Journal Article · Thu Dec 31 23:00:00 EST 2009 · Journal of Alloys and Compounds

DOI:https://doi.org/10.1016/j.jallcom.2010.04.129· OSTI ID:1051455

Park, E S ^[1]; Chang, H J ^[2]; Kim, D H ^[3]

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1. Research Institute of Advanced Materials, Department of Materials Science and Engineering, Seoul Nat
2. Oak Ridge National Laboratory (ORNL)
3. Center for Non-crystalline Materials, Department of Metallurgical Engineering, Yonsei University, Se

Present study reports improvement of glass-forming ability (GFA) and phase separation in Cu Ti-rich Cu Ti Zr Ni Si bulk metallic glasses (BMGs) by tailoring the constituent elements. The MA of metalloid element, Sn having relatively large negative enthalpy of mixing can lead to improve GFA (up to 8mm in diameter) as well as thermal stability (up toTx = 48K) by optimizing the substitution element. And the addition of elements having relatively large positive enthalpy of mixing (partial substitution of Zr or Ti with Y) can lead to the liquid state phase separation in Cu Ti Sn Zr Ni Si BMG, although the addition lead to drastic deterioration of the GFA.

• Research Organization: Oak Ridge National Laboratory (ORNL)
• Sponsoring Organization: SC USDOE - Office of Science (SC)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1051455
• Journal Information: Journal of Alloys and Compounds, Journal Name: Journal of Alloys and Compounds Vol. 504s; ISSN 0925-8388
• Country of Publication: United States
• Language: English