Formation of Icosahedral Phase in Bulk Glass Forming Ti-Zr-Be-Cu-Ni Alloy
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Formation of an icosahedral phase in the bulk glass forming Ti40Zr29Be14Cu9Ni8 alloy during crystallization from amorphous phase and solidiἀcation from melt is investigated. The icosahedral phase with a size of 10 to 15 nm forms as a thermodynamically stable phase at intermediate temperature during the transformation from amorphous to crystalline phases such as Laves and β-(Ti-Zr) phases, indicating that the existence of the icosahedral cluster in the undercooled liquid. On the other hand, the icosahedral phase forms as a primary solidification phase even though the Laves phase is stable at high temperature, which is can be explained based on the high nucleation rate of icosahedral phase relative to that of competing crystalline Laves phase due to lower interfacial energy between icosahedral and liquid phases.
Abstract
Formation of an icosahedral phase in the bulk glass forming Ti40Zr29Be14Cu9Ni8 alloy during crystallization from amorphous phase and solidiἀcation from melt is investigated. The icosahedral phase with a size of 10 to 15 nm forms as a thermodynamically stable phase at intermediate temperature during the transformation from amorphous to crystalline phases such as Laves and β-(Ti-Zr) phases, indicating that the existence of the icosahedral cluster in the undercooled liquid. On the other hand, the icosahedral phase forms as a primary solidification phase even though the Laves phase is stable at high temperature, which is can be explained based on the high nucleation rate of icosahedral phase relative to that of competing crystalline Laves phase due to lower interfacial energy between icosahedral and liquid phases.
참고문헌 (23)
- Hiraga K, "Advance in Imaging and Electron Physics Volume 101", pp.37~98 (1997), Academic Press
- Holland-Moritz D, "On the energy of the interface between a melt and quasicrystalline and polytetrahedral phases", J. Non-Cryst. Solids, 250-252, pp.839~843 (1999)
- Holland-Moritz D, "Undercooling and solidification behaviour of melts of the quasicrystal-forming alloys Al-Cu-Fe and Al-Cu-Co", Acta Mater, 46, pp.1601~1615 (1998)
- Holzer J C, "Kinetics of the amorphous to icosahedral phase transformation in AlCuV alloys", Acta Metall. Mater, 39, pp.1833~1843 (1991)
- Kim W J, "Icosahedral-phase formation and stability in Ti-Zr-Co alloys", Phil. Mag. Lett, 74, pp.439~447 (1996)
- Kim Y C, "Role of nanometer-scale quasicrystals in improving the mechanical behavior of Ti-based bulk metallic glasses", Appl. Phys. Lett, 83, pp.3093~3095 (2003)
- Kim Y C, "Precipitation of stable icosahedral phase in Ti-based amorphous alloys", Mater. Trans, 44, pp.1978~1981 (2003)
- Koster U, "Formation of quasicrystals in bulk glass forming Zr-Cu-Ni-Al alloys", Mater. Sci. Eng. A, 226-228, pp.995~998 (1997)
- Lee J K, "Formation of icosahedral phase from amorphous Zr65Al7.5Cu12.5Ni10Ag5 alloys", Appl. Phys. Lett, 77, pp.978~980 (2000)
- Mei J N, "Effects of Nb on the formation of icosahedral quasicrystalline phase in Ti-rich Ti-Zr-Ni-Cu-Be glassy forming alloys", J. Non-Cryst. Solids, 354, pp.3332~3335 (2008)
- Nelson D R, "Solid State Physics Volume 42", pp.1~90 (1989), Academic Press
- Park J M, "Enhancement of plasticity in Ti-rich Ti-Zr-Be-Cu-Ni bulk metallic glasses", Scripta Mater, 53, pp.1~6 (2005)
- Poon S J, "Glassy to icosahedral phase transformation in Pd-U-Si alloys", Phys. Rev. Lett, 55, pp.2324~2327 (1985)
- Qiang J B, "Formation of glassy and icosahedral phases in as-cast (Zr9Ni4)75(Al1-xTix)25 alloys", Scripta Mater, 55, pp.617~620 (2006)
- Ren H T, "Enhancement of plasticity and toughness in monolithic Zr-based bulk metallic glass by heterogeneous microstructure", Scripta Mater, 64, pp.609~612 (2011)
- Saida J, "Nanoscale icosahedral quasicrystalline phase formation in a rapidly solidified Zr80Pt20 binary alloy", Appl. Phys. Lett, 77, pp.73~75 (2000)
- Saida J, "Direct observation of icosahedral cluster in Zr70Pd30 binary glassy alloy", Appl. Phys. Lett, 79, pp.412~414 (2001)
- Shechtman D, "Metallic phase with long-range orientational order and no translational symmetry", Phys. Rev. Lett, 53, pp.1951~1953 (1984)
- Steinhardt P J, "Bond-orientational order in liquids and glasses", Phys. Rev. B, 28, pp.784~805 (1983)
- Tsai A P, "Kinetics of the amorphous to icosahedral structure transition in Al-Cu-V and Al-Mn-Si alloys", Acta Metall, 37, pp.1443~1449 (1989)
- Xing L Q, "High-strength materials produced by precipitation of icosahedral quasicrystals in bulk Zr-Ti-Cu-Ni-Al amorphous alloys", Appl. Phys. Lett, 74, pp.664~666 (1999)
- Xing L Q, "Relation between short-range order and crystallization behavior in Zr-based amorphous alloys", Appl. Phys. Lett, 77, pp.1970~1972 (2000)
- Xing L Q, "Precipitation of an icosahedrally symmetric ordered phase in Zr-Ti-Cu-Ni-Al metallic glasses", Appl. Phys. Lett, 81, pp.3371~3373 (2002)