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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: [email protected]@
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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

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References

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