Improved room temperature plasticity was achieved by microalloying Cu in a series of (Fe71Nb6B23)100−xCux (x = 0, 0.25, 0.5, 0.75, and 1) glass matrix alloys with tunable size and volume fraction of precipitates composed of α-Fe and Fe23B6 phases. When ∼10-nm-sized nano-scale precipitates are formed with a size comparable to the shear bandwidth by controlling the added content of Cu, the (Fe71Nb6B23)99.5Cu0.5 alloy exhibits a maximum plastic strain of 4.3 ± 0.8% with pronounced multiple shear banding. A further increase in the size of the precipitates up to micrometer scale results in catastrophic fracture accompanied with irregular cracks, revealing that the fracture mechanism of the different alloys is controlled by the precipitate size.
This is a preview of subscription content, access via your institution.
Buy single article
Instant access to the full article PDF.
Tax calculation will be finalised during checkout.
Subscribe to journal
Immediate online access to all issues from 2019. Subscription will auto renew annually.
Tax calculation will be finalised during checkout.
A. Inoue: Stabilization of metallic supercooled liquid and bulk amorphous alloys. Acta Mater. 48, 279 (2000).
W.L. Johnson: Bulk glass-forming metallic alloys. MRS Bull. 24, 42 (1999).
M.F. Ashby and A.L. Greer: Metallic glasses as structural materials. Scr. Mater. 54, 321 (2006).
C.A. Schuh and A.C. Lund: Atomistic basis for the plastic yield criterion of metallic glass. Nat. Mater. 2, 449 (2003).
R.F. Decker: Alloy design using second phase. Metall. Trans. 4, 2495 (1973).
R.W. Cahn and P. Haasen: Physical Metallurgy (North-Holland, Amsterdam, 1996).
H. Choi-Yim, R. Busch, U. Köster, and W.L. Johnson: Synthesis and characterization of particulate reinforced Zr57Nb5Al10Cu15.4Ni12.6 bulk metallic glass composites. Acta Mater. 47, 2455 (1999).
J.C. Lee, Y.C. Kim, J.P. Ahn, and H.S. Kim: Enhanced plasticity in a bulk amorphous matrix composite: Macroscopic and microscopic viewpoint studies. Acta Mater. 53, 129 (2005).
D.C. Hofmann, J.Y. Suh, A. Wiest, G. Duan, M.L. Lind, M.D. Demetrious, and W.L. Johnson: Designing bulk metallic glass matrix composites with high toughness and tensile ductility. Nature 451, 1085 (2008).
S. Pauly, S. Gorantla, G. Wang, U. Kühn, and J. Eckert: Transformation-mediated ductility in CuZr-based bulk metallic glasses. Nat. Mater. 9, 473 (2010).
C.C. Hays, C.P. Kim, and W.L. Johnson: Microstructure controlled shear band formation and enhanced plasticity of bulk metallic glasses. Phys. Rev. Lett. 84, 2901 (2000).
C. Fan, R.T. Ott, and T.C. Hufnagel: Metallic glass matrix composite with precipitated ductile reinforcement. Appl. Phys. Lett. 81, 1020 (2002).
J.M. Park, D.H. Kim, K.B. Kim, E. Fleury, M.H. Lee, W.T. Kim, and J. Eckert: Enhancement of plasticity in Ti-rich Ti-Zr-Be-Cu-Ni-Ta bulk glassy alloy via introducing the structural inhomogeneity. J. Mater. Res. 23, 2984 (2008).
A.S. Argon: Plastic deformation in metallic glasses. Acta Metall. 27, 47 (1979).
J.J. Lewandowski and A.L. Greer: Temperature rise at shear bands in metallic glass. Nat. Mater. 5, 15 (2006).
H. Guo, P.F. Yan, Y.B. Wang, J. Tan, Z.F. Zhang, M.L. Sui, and E. Ma: Tensile ductility and necking of metallic glass. Nat. Mater. 6, 735 (2007).
E. Pekarskaya, C.P. Kim, and W.L. Johnson: In situ transmission electron microscopy studies of shear bands in a bulk metallic glass based composite. J. Mater. Res. 16, 2513 (2001).
Y.M. Chen, T. Ohkubo, T. Mukai, and K. Hono: Structure of shear bands in Pd40Ni40P20 bulk metallic glass. J. Mater. Res. 24, 1 (2009).
Y. Shi and M.L. Falk: Strain localization and percolation of stable structure in amorphous solids. Phys. Rev. Lett. 95, 095502 (2005).
Y. Zhang and A.L. Greer: Thickness of shear bands in metallic glasses. Appl. Phys. Lett. 89, 071907 (2006).
R. Matsumoto and N. Miyazaki: The critical length of shear bands in metallic glass. Scr. Mater. 59, 107 (2008).
J.M. Park, G. Wang, R. Li, N. Mattern, J. Eckert, and D.H. Kim: Enhancement of plastic deformability in Fe-Ni-Nb-B bulk glassy alloys by controlling the Ni-to-Fe concentration ratio. Appl. Phys. Lett. 96, 031905 (2010).
A. Makino, X. Li, K. Yubuta, C. Chang, T. Kubota, and A. Inoue: The effect of Cu on the plasticity of Fe-Si-B-P based bulk metallic glass. Scr. Mater. 60, 277 (2009).
J.M. Park, D.H. Kim, K.B. Kim, and J. Eckert: Improving the plasticity of a high strength Fe-Si-Ti ultrafine composite by introduction of an immiscible element. Appl. Phys. Lett. 97, 251915 (2010).
Z.F. Zhang, G. He, H. Zhang, and J. Eckert: Rotation mechanism of shear fracture induced by high plasticity in Ti-based nano-structured composite containing ductile dendrites. Scr. Mater. 52, 945 (2005).
X.K. Xi, D.Q. Zhao, M.X. Pan, W.H. Wang, and J.J. Lewandowski: Fracture of brittle metallic glasses: Brittleness or plasticity. Phys. Rev. Lett. 94, 125510 (2005).
F. Spaepen: Microscopic mechanism for steady state inhomogeneous flow in metallic glasses. Acta Metall. 25, 407 (1977).
A. Leonhard, L.Q. Xing, M. Heilmaier, A. Gebert, J. Eckert, and L. Schultz: Effect of crystalline precipitations on the mechanical behavior of bulk glass forming Zr-based alloys. Nanostruct. Mater. 10, 805 (1998).
J.M. Park, J.S. Park, J.-H. Kim, and H.J. Chang: Mechanical behaviors of partially devitrified Ti-based bulk metallic glasses. J. Mater. Sci. 40, 4999 (2005).
Y.C. Kim, J.H. Na, J.M. Park, D.H. Kim, J.K. Lee, and W.T. Kim: Role of nanometer-scale quasicrystals in improving the mechanical behavior of Ti-based bulk metallic glasses. Appl. Phys. Lett. 83, 3093 (2003).
M.W. Chen, A. Inoue, W. Zhang, and T. Sakurai: Extraordinary plasticity of ductile bulk metallic glasses. Phys. Rev. Lett. 96, 245502 (2006).
J. Das, M.B. Tang, K.B. Kim, R. Theissmann, F. Baier, W.H. Wang, and J. Eckert: Work-hardenable ductile bulk metallic glass. Phys. Rev. Lett. 94, 205501 (2005).
K. Hajlaoui, A.R. Yavari, B. Doisneau, A. LeMoulec, W.J. Botta, F.G. Vaughan, A.L. Greer, A. Inoue, W. Zhang, and A. Kvick: Shear delocalization and crack blunting of a metallic glass containing nanoparticles: In situ deformation in TEM analysis. Scr. Mater. 54, 1829 (2006).
M.L. Lee, Y. Li, and C.A. Schuh: Effect of a controlled volume fraction of dendritic phases on tensile and compressive ductility in La-based metallic glass matrix composites. Acta Mater. 52, 4121 (2004).
J.M. Park, J. Jayaraj, D.H. Kim, N. Mattern, G. Wang, and J. Eckert: Tailoring of in situ Ti-based bulk glassy matrix composites with high mechanical performance. Intermetallics 18, 1908 (2010).
This work was supported by the Defense Acquisition Program Administration and the Agency for Defense Development, the Global Research Laboratory Program of the Korea Ministry of Science and Technology, and the Center for Advanced Materials Processing of the 21st Century Frontier R&D Program of the Korea Ministry of Knowledge Economy. Stimulating discussions with E. Fleury, J.H. Han, K.B. Kim, S. Pauly, S. Scudino, U. Kühn, and W.T. Kim are gratefully acknowledged.
This author was an editor of this journal during the review and decision stage. For the JMR policy on review and publication of manuscripts authored by editors, please refer to http://www.mrs.org/jmr-editor-manuscripts/
About this article
Cite this article
Park, J.M., Kim, D.H., Stoica, M. et al. The influence of in situ formed precipitates on the plasticity of Fe-Nb-B-Cu bulk metallic glasses. Journal of Materials Research 26, 2080–2086 (2011). https://doi.org/10.1557/jmr.2011.202