Abstract
The microstructures and free-volume evolutions of as-cast and pre-annealed Zr65Al7.5Ni10Cu12.5Ag5 bulk metallic glasses during rolling deformation have been investigated. No phase transformation is detected in the as-cast/rolled specimen. However, the structural stability of the glass against plastic deformation is worse after pre-annealing, indicated by nanocrystallization in pre-annealed/rolled specimens with large deformation degrees. Moreover, with increasing deformation degree, the free-volume content in a pre-annealed/rolled specimen increases at a lower average rate than that in an as-cast/rolled specimen.
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Wang W H, Dong C, Shek C H. Bulk metallic glasses. Mater Sci Eng R, 2004, 44: 45–89
Yao K F, Ruan F, Yang Y Q, et al. Superductile bulk metallic glass. Appl Phys Lett, 2006, 88: 122106
Jing Q, Liu R P, Li G, et al. Thermal expansion behavior and structure relaxation of ZrTiCuNiBe bulk amorphous alloy. Scripta Mater, 2003, 49: 111–115
Yao J H, Wang J Q, Li Y, et al. Ductile Fe-Nb-B bulk metallic glass with ultrahigh strength. Appl Phys Lett, 2008, 92: 251906
Schuh C A, Hufnagel T C, Ramamurty U. Mechanical behavior of amorphous alloys. Acta Mater, 2007, 55: 4067–4109
Löffler J F. Bulk metallic glasses. Intermetallics, 2003, 11: 529–540
Liu C T, Chisholm M F, Miller M K. Oxygen impurity and microalloying effect in a Zr-based bulk metallic glass alloy. Intermetallics, 2002, 10: 1105–1112
Qiu S B, Yao K F, Gong P. Effects of crystallization fractions on mechanical properties of Zr-based metallic glass matrix composites. Sci China Phys Mech Astron, 2010, 53: 424–429
Johnson W J. Bulk amorphous metal—An emerging engineering material. JOM, 2002, 54: 40–43
Spaepen F. A microscopic mechanism for steady state inhomogeneous flow in metallic glasses. Acta Metall, 1977, 25: 407–415
Chen L Y, Setyawan A D, Kato H, et al. Free-volume-induced enhancement of plasticity in a monolithic bulk metallic glass at room temperature. Scripta Mater, 2008, 59: 75–78
Hammond V H, Houtz M D, O’Reilly J M. Structural relaxation in a bulk metallic glass. J Non-Cryst Solids, 2003, 325: 179–186
Slipenyuk A, Eckert J. Correlation between enthalpy change and free volume reduction during structural relaxation of Zr55Cu30Al10Ni5 metallic glass. Scripta Mater, 2004, 50: 39–44
Flores K M, Sherer E, Bharathula A, et al. Sub-nanometer open volume regions in a bulk metallic glass investigated by positron annihilation. Acta Mater, 2007, 55: 3403–3411
Hwang K C, Park E S, Huh M Y, et al. Effect of thickness reduction on mechanical property and microstructure of Zr-based bulk metallic glass during warm-rolling in the supercooled liquid region. Intermetallics, 2010, 18: 1912–1915
Bhowmick R, Raghavan R, Chattopadhyay K, et al. Plastic flow softening in a bulk metallic glass. Acta Mater, 2006, 54: 4221–4228
Liu H B, Li J F, Cao Q P, et al. Free-volume evolution of glassy Zr65Al7.5Ni10Cu17.5 during inhomogeneous deformation. Chinese Sci Bull, 2007, 52: 3443–3447
Cao Q P, Li J F, Zhou Y H, et al. Free-volume evolution and its temperature dependence during rolling of Cu60Zr20Ti20 bulk metallic glass. Appl Phys Lett, 2005, 87: 101901
Lee S C, Lee C M, Yang J W, et al. Microstructural evolution of an elastostatically compressed amorphous alloy and its influence on the mechanical properties. Scripta Mater, 2008, 58: 591–594
Li Q K, Li M. Free volume evolution in metallic glasses subjected to mechanical deformation. Mater Trans, 2007, 48: 1816–1821
Zhang Y, Hahn H. Characterization of the free volume in a Zr45.0Cu39.3Al7.0Ag8.7 bulk metallic glass by reverse Monte Carlo simulation and density measurements. J Non-Cryst Solids, 2011, 357: 1420–1425
Kanungo B P, Glade S C, Kumar P A. Characterization of free volume changes associated with shear band formation in Zr- and Cu-based bulk metallic glasses. Intermetallics, 2004, 12: 1073–1080
van den Beukel A, Sietsma J. The glass transition as a free volume related kinetic phenomenon. Acta Metall, 1990, 38: 383–389
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Zhou, W., Lu, B., Kong, L. et al. Rolling-induced microstructure change in Zr65Al7.5Ni10Cu12.5Ag5 bulk metallic glass. Chin. Sci. Bull. 56, 3948–3951 (2011). https://doi.org/10.1007/s11434-011-4783-6
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DOI: https://doi.org/10.1007/s11434-011-4783-6