Abstract
The effect of replacement of Ti with Y or Nb in Ti-rich Ti–Zr–Be–Cu–Ni bulk metallic glasses (BMGs) has been investigated. The minor addition (MA) of Y (Y–Ti: +58 kJ/mol) induced phase separation into Y-rich crystalline particles and Ti-rich amorphous matrix, while the MA of Nb (Nb–Ti: +10 kJ/mol) led to nanocrystallization in Ti-rich BMGs with icosahedral nuclei. This result indicates that MA of elements having positive enthalpy of mixing can induce a different degree of instability in the single amorphous matrix depending on the amount of repulsive interaction energy. In particular, MA of Nb (up to 4 at.%) significantly increased the compressive fracture strain (∈f) up to ∼9.35 ± 0.2%, which indicates that the plasticity of BMGs can be enhanced by the size-modulated icosahedral phase embedded in the amorphous matrix.
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References
W.H. Wang: Role of minor additions in formation and properties of bulk metallic glasses. Prog. Mater. Sci. 52, 540 (2007).
A. Inoue: Stabilization of metallic supercooled liquid and bulk amorphous alloys. Acta Mater. 48, 279 (2000).
L-Q. Xing, Y. Li, K.T. Ramesh, J. Li, and T.C. Hufnagel: Enhanced plastic strain in Zr-based bulk amorphous alloys. Phys. Rev. B 64, 180201 (2001).
M.H. Lee, J.Y. Lee, D.H. Bae, W.T. Kim, D.J. Sordelet, D.H. Kim, M.H. Lee, D.H. Bae, W.T. Kim, and D.H. Kim: A development of Ni-based alloys with enhanced plasticity. Mater. Trans. 44, 2084 (2003).
E.S. Park, J.Y. Lee, and D.H. Kim: Effect of Ag addition on the improvement of glass-forming ability and plasticity of Mg–Cu–Gd bulk metallic glasses. J. Mater. Res. 20, 2379 (2005).
E.S. Park, H.J. Chang, D.H. Kim, T. Ohkubo, and K. Hono: Effect of the substitution of Ag and Ni for Cu on the glass forming ability and plasticity of Cu60Zr30Ti10 alloy. Scripta Mater. 54, 1569 (2006).
J.C. Oh, T. Ohkubo, Y.C. Kim, E. Fleury, and K. Hono: Phase separation in Cu43Zr43Al7Ag7 bulk metallic glass. Scripta Mater. 53, 165 (2005).
E.S. Park and D.H. Kim: Phase separation and enhancement of plasticity in Cu–Zr–Al–Y bulk metallic glasses. Acta Mater. 54, 2597 (2006).
E.S. Park, J.S. Kyeong, and D.H. Kim: Phase separation and improved plasticity by modulated heterogeneity in Cu–(Zr,Hf)–(Gd,Y)–Al metallic glasses. Scripta Mater. 57, 49 (2007).
Y.C. Kim, J.H. Na, J.M. Park, J.K. Lee, W.T. Kim, and D.H. Kim: Role of nanometer-scale quasicrystals in improving the mechanical behavior of Ti-based bulk metallic glasses. Appl. Phys. Lett. 83, 3093 (2003).
Y.C. Kim, W.T. Kim, and D.H. Kim: A development of Ti-based bulk metallic glasses. Mater. Sci. Eng., A 375–377, 127 (2004).
J.M. Park, H.J. Chang, K.H. Han, W.T. Kim, and D.H. Kim: Enhancement of plasticity in Ti-rich Ti–Zr–Be–Cu–Ni bulk metallic glasses. Scripta Mater. 53, 1 (2005).
F. Guo, H.J. Wang, S.J. Poon, and G.J. Shiflet: Ductile titaniumbased glassy alloy ingots. Appl. Phys. Lett. 86, 091907 (2005).
A. Inoue, T. Zhang, J. Saida, and M. Matsushita: Enhancement of strength and ductility in Zr-based bulk amorphous alloys by precipitation of quasicrystalline phase. Mater. Trans., JIM 41, 1511 (2000).
J. Eckert, J. Das, S. Pauly, and C. Duhamel: Mechanical properties of bulk metallic glasses and composites. J. Mater. Res. 22, 285 (2007).
A. Gebert, J. Eckert, and L. Schultz: Effect of oxygen on phase formation and thermal stability of slowly cooled Zr65Al7.5Cu7.5Ni10 metallic glass. Acta Mater. 46, 5475 (1998).
A.A. Kündig, M. Ohnuma, D.H. Ping, T. Ohkub, and K. Hono: In-situ formed two-phase metallic glass with surface fractal microstructure. Acta Mater. 52, 2441 (2004).
B.J. Park, H.J. Chang, W.T. Kim, and D.H. Kim: In situ formation of two amorphous phases by liquid phase separation in Y–Ti–Al–Co alloy. Appl. Phys. Lett. 85, 6353 (2004).
N. Mattern, U. Kühn, A. Gebert, T. Gemming, M. Zinkevich, H. Wendrock, and L. Schultz: Microstructure and thermal behavior of two-phase amorphous Ni–Nb–Y alloy. Scripta Mater. 53, 271 (2005).
B.J. Park, H.J. Chang, D.H. Kim, W.T. Kim, K. Chattopadhyay, T.A. Abinandanan, and S. Bhattacharyya: Phase separating bulk metallic glass: A hierarchical composite. Phys. Rev. Lett. 96, 245503 (2006).
E.S. Park, E.Y. Jeong, J-K. Lee, J.C. Bea, A.R. Kwon, A. Gebert, L. Schultz, H.J. Chang, and D.H. Kim: In situ formation of two glassy phases in the Nd–Zr–Al–Co alloy system. Scripta Mater. 56, 197 (2007).
J.Y. Lee, K.H. Han, J.M. Park, K. Chattopadhyay, W.T. Kim, and D.H. Kim: Deformation and evolution of shear bands under compressive loading in bulk metallic glasses. Acta Mater. 54, 5271 (2006).
Y. Zhang, J. Chen, G.L. Chen, and X.J. Liu: Glass formation mechanism of minor yttrium addition in CuZrAl alloys. Appl. Phys. Lett. 89, 131904 (2006).
S.W. Lee, M.Y. Huh, S.W. Chae, and J.C. Lee: Mechanism of the deformation-induced nanocrystallization in a Cu-based bulk amorphous alloy under uniaxial compression. Scripta Mater. 54, 1439 (2006).
A.R. Miedema: The heat of formation of alloys. Philips Tech. Rev. 36, 217 (1976).
M. Chen, A. Inoue, W. Zhang, and T. Sakurai: Extraordinary plasticity of ductile bulk metallic glasses. Phys. Rev. Lett. 96, 245502 (2006).
C. Fan, H. Li, L.J. Kecskes, K. Tao, H. Choo, P.K. Liaw, and C.T. Liu: Mechanical behavior of bulk amorphous alloys reinforced by ductile particles at cryogenic temperatures. Phys. Rev. Lett. 96, 145506 (2006).
Acknowledgments
This work was supported by the Global Research Laboratory Program of the Korean Ministry of Science. One of the authors (E.S. Park) was supported by the Korea Research Foundation Grant funded by the Korean Government (MOEHRD) (KRF-2006-214-D00066). The author is indebted to Prof. Frans Spaepen, Harvard University for thoughtful advice.
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Park, E.S., Chang, H.J., Lee, J.Y. et al. Improvement of plasticity by tailoring combination of constituent elements in Ti-rich Ti−Zr−Be−Cu−Ni bulk metallic glasses. Journal of Materials Research 22, 3440–3447 (2007). https://doi.org/10.1557/JMR.2007.0424
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DOI: https://doi.org/10.1557/JMR.2007.0424