Hostname: page-component-76fb5796d-22dnz Total loading time: 0 Render date: 2024-04-26T00:11:57.329Z Has data issue: false hasContentIssue false
  • English
  • Français

Mg–Ca–Zn Bulk Metallic Glasses with High Strength and Significant Ductility

Published online by Cambridge University Press:  01 August 2005

X. Gu ,
G.J. Shiflet ,
F.Q. Guo  and
S.J. Poon
X. Gu
Affiliation:
Department of Materials Science and Engineering, University of Virginia, Charlottesville, Virginia 22903
G.J. Shiflet*
Affiliation:
Department of Materials Science and Engineering, University of Virginia, Charlottesville, Virginia 22903
F.Q. Guo
Affiliation:
Department of Physics, University of Virginia, Charlottesville, Virginia 22903
S.J. Poon
Affiliation:
Department of Physics, University of Virginia, Charlottesville, Virginia 22903
*
a) Address all correspondence to this author. e-mail: gjs@virginia.edu@
Get access

Abstract

The development of Mg–Ca–Zn metallic glasses with improved bulk glass forming ability, high strength, and significant ductility is reported. A typical size of at least 3–4 mm amorphous samples can be prepared using conventional casting techniques. By varying the composition, the mass density of these light metal based bulk amorphous alloys ranges from 2.0 to 3.0 g/cm3. The typical measured microhardness is 2.16 GPa, corresponding to a fracture strength of about 700 MPa and specific strength of around 250–300 MPa cm3/g. Unlike other Mg- or Ca-based metallic glasses, the present Mg–Ca–Zn amorphous alloys show significant ductility.

Keywords

CalorimetryCastingMetallic glass
Type
Rapid Communications
Information
Journal of Materials Research , Volume 20 , Issue 8 , August 2005 , pp. 1935 - 1938
Copyright
Copyright © Materials Research Society 2005

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1Inoue, A.: Stabilization of metallic supercooled liquid and bulk amorphous alloys. Acta Mater. 48, 279 (2000).CrossRefGoogle Scholar
2Johnson, W.L.: Bulk glass-forming metallic alloys: Science and technology, in Bulk Metallic Glasses, edited by Johnson, W.L., Inoue, A., and Liu, C.T. (Mater. Res. Soc. Symp. Proc. 554, Warrendale, PA, 1999), p. 311.Google Scholar
3He, Y., Poon, S.J. and Shiflet, G.J.: Synthesis and properties of metallic glasses that contain aluminum. Science 241, 1640 (1988).CrossRefGoogle ScholarPubMed
4Calka, A., Madhava, M., Polk, D.E., Giessen, B.C., Matyja, H. and Vander-Sande, J.: A transition-metal-free amorphous alloy: Mg70Zn30. Scr. Metall. 11, 65 (1977).CrossRefGoogle Scholar
5Inoue, A., Kato, A., Zhang, T., Kim, S.G. and Masumoto, T.: Mg–Cu–Y amorphous-alloys with high mechanical strengths produced by a metallic mold casting method. Mater. Trans. JIM 32, 609 (1991).CrossRefGoogle Scholar
6Inoue, A., Nakamura, T., Nishiyama, N. and Masumoto, T.: g–Cu–Y bulk amorphous-alloys with high-tensile strength produced by a high-pressure die-casting method. Mater. Trans. JIM 33, 937 (1992).CrossRefGoogle Scholar
7Amiya, K. and Inoue, A.: Formation, thermal stability and mechanical properties of Ca-based bulk amorphous alloys. Mater. Trans. JIM 43, 81 (2002).CrossRefGoogle Scholar
8Guo, F.Q., Poon, S.J. and Shiflet, G.J.: CaAl-based bulk metallic glasses with high thermal stability. Appl. Phys. Lett. 84, 34 (2004).CrossRefGoogle Scholar
9Pak, E.S. and Kim, D.H.: Formation of Ca–Mg–Zn bulk glassy alloy by casting into cone-shaped copper mold. J. Mater. Res. 19, 685 (2004).Google Scholar
10Migliori, A., Sarrao, J.L., Visscher, W.M., Bell, T.M., Ming, L., Fisk, Z. and Leisure, R.G.: Resonant ultrasound spectroscopic techniques for measurement of the elastic moduli of solids. Physica B 183, 1 (1993).CrossRefGoogle Scholar
11Neite, G., Kubota, K., Higashi, K. and Hehmann, F.: Materials Science and Technology, Vol. 8, in Structure and Properties of Nonferrous Alloys, edited by Matucha, K.H. (Wiley, New York, 1996), pp. 152–156.Google Scholar
12Gu, X., Jiao, T., Kecskes, L.J., Woodman, R.H., Fan, C., Ramesh, K.T. and Hufnagel, T.C.: Crystallization and mechanical behavior of (Hf,Zr)–Ti–Cu–Ni–Al metallic glasses. J. Non-Cryst. Solids 317, 112 (2003).CrossRefGoogle Scholar
13Inoue, A.: High-strength bulk amorphous-alloys with low critical cooling rates. Mater. Trans. JIM 36, 866 (1995).CrossRefGoogle Scholar
14Guo, F.Q., Poon, S.J. and Shiflet, G.J.: Enhanced bulk metallic glass formability by combining chemical compatibility and atomic size effects. J. Appl. Phys. 97, 013512 (2005).CrossRefGoogle Scholar