Abstract
In the present study, we show by tailoring the combinations of the bonding energy among the elements in the liquid state, glass forming ability and compressive mechanical properties of the metallic glasses (MGs) can be improved. The mixing enthalpy values for binary atom pairs in the ternary Mg–Ni–Gd alloys (Mg–Ni: −12 kJ/mol, Mg–Gd: −27 kJ/mol, Ni–Gd: −161 kJ/mol) covers a wide range, although they are all negative. Mg-rich Mg–Ni–Gd (Mg > 70 at.%) alloys can be readily solidified into an amorphous state in a wide composition range up to 4 mm in diameter using the injection casting method; they exhibit the highest level of glass transition temperature Tg among those reported in Mg-based MGs so far. In particular, Mg-rich Mg–Ni–Gd bulk metallic glasses with 10–15 at.% Ni and 10–15 at.% Gd exhibit high strength over 900 MPa and large plastic strain up to ∼2% during compressive loading.
Similar content being viewed by others
References
A. Inoue, A. Kato, T. Zhang, S.G. Kim, and T. Masumoto: Mg–Cu–Y amorphous alloys with high mechanical strengths produced by a metallic mold casting method. Mater. Trans., JIM 32, 609 (1991).
H.G. Kang, E.S. Park, W.T. Kim, D.H. Kim, and H.K. Cho: Fabrication of bulk Mg–Cu–Ag–Y glassy alloy by squeeze casting. Mater. Trans., JIM 41, 846 (2000).
H. Men and D.H. Kim: Fabrication of ternary Mg–Cu–Gd bulk metallic glass with high glass-forming ability under air atmosphere. J. Mater. Res. 18, 1502 (2003).
E.S. Park and D.H. Kim: Formation of Mg–Cu–Ni–Ag–Zn–Y–Gd bulk glassy alloy by casting into cone-shaped copper mold in air atmosphere. J. Mater. Res. 20, 1465 (2005).
H. Ma, L.L. Shi, J. Xu, Y. Li, and E. Ma: Discovering inch-diameter metallic glasses in thress-dimensional composition space. Appl. Phys. Lett. 87, 181915 (2005).
Y. Li, S.C. Ng, and C.K. Ong: New amorphous alloys with high strength and good bend ductility in the Mg–Ni–Nd system. J. Mater. Proc. Technol. 48, 489 (1995).
Y.X. Wei, X.K. Xi, D.Q. Zhao, M.X. Pan, and W.H. Wang: Formation of MgNiPr bulk metallic glasses in air. Mater. Lett. 59, 945 (2005).
X. Gu, G.J. Shiflet, F.Q. Guo, and S.J. Poon: Mg–Ca–Zn bulk metallic glasses with high strength and significant ductility. J. Mater. Res. 20, 1935 (2005).
H. Ma, J. Xu, and E. Ma: Mg-based bulk metallic glass composites with plasticity and high strength. Appl. Phys. Lett. 83, 2793 (2003).
Y.K. Xu, H. Ma, J. Xu, and E. Ma: Mg-based bulk metallic glass composites with plasticity and gigapascal strength. Acta Mater. 53, 1857 (2005).
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 (R) (2001).
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 glass. J. Mater. Res. 20, 2379 (2005).
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, H.J. Chang, D.H. Kim, T. Ohkubo, and K. Hono: Effect of substitution of Ag and Ni for Cu on the glass forming ability and plasticity of Cu60Zr30Ti10 alloy. Scripta Mater. 54, 1569 (2006).
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).
Y. Li, S.C. Ng, C.K. Ong, H.H. Hng, and H. Jones: Critical cooling rates of glass formation in Mg-based Mg–Ni–Nd alloys. J. Mater. Sci. Lett. 14, 988 (1995).
A. Inoue, T. Negishi, H.M. Kimura, T. Zhang, and R. Yavari: High packing density of Zr- and Pd-based bulk amorphous alloys. Mater. Trans. JIM 39, 318 (1998).
G. Neite, K. Kubota, K. Higashi, and F. Hehmann: Structure and Properties in Nonferrous Alloys, Vol. 8, in Materials Science and Technology, edited by K.H. Matucha (Wiley, New York, 1996), pp. 152–156.
A.R. Miedema, F.R. deboer, and R. Boom: Enthalpy of formation of transition metal alloys. Calphad 1, 341 (1977).
C.A. Angell: Formation of glasses from liquids and biopolymers. Science 267, 1924 (1995).
R. Busch, W. Liu, and W.L. Johnson: Thermodynamics and kinetics of the Mg65Cu25Y10 bulk metallic glass forming liquid. J. Appl. Phys. 83, 4134 (1998).
V.N. Novikov and A.P. Sokolov: Poisson’s ratio and the fragility of glass-forming liquids. Nature 431, 961 (2004).
J. Schroers and W.L. Johnson: Ductile bulk metallic glasses. Phys. Rev. Lett. 93, 255506 (2004).
A. Gebert, B. Khorkounov, U. Wolff, Ch. Mickel, M. Uhlemann, and L. Schultz: Stability of rapidly quenched and hydrogenated Mg–Ni–Y ad Mg–Cu–Y alloys in extreme alkaline medium. J. Alloys Compd. 419, 319 (2006).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Park, E.S., Chang, H.J. & Kim, D.H. Mg-rich Mg–Ni–Gd ternary bulk metallic glasses with high compressive specific strength and ductility. Journal of Materials Research 22, 334–338 (2007). https://doi.org/10.1557/jmr.2007.0034
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1557/jmr.2007.0034