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Deformation Behavior in La55Al25Ni20 Metallic Glass

Published online by Cambridge University Press:  10 February 2011

Y. Kawamura ,
T. Nakamura  and
A. Inoue
Y. Kawamura
Affiliation:
Institute for Materials Research, Tohoku University, Sendai 980–8577, Japan, rivervil@imr.tohoku.ac.jp
T. Nakamura
Affiliation:
Institute for Materials Research, Tohoku University, Sendai 980–8577, Japan, rivervil@imr.tohoku.ac.jp
A. Inoue
Affiliation:
Institute for Materials Research, Tohoku University, Sendai 980–8577, Japan, rivervil@imr.tohoku.ac.jp
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Abstract

We investigated the deformation behavior of the supercooled liquid in a La55Al25Ni20 (at.%) metallic glass ribbon that has a wide supercooled liquid region of 65 K before crystallization. The deformation of the metallic glass was divided into three types, namely, homogeneous deformations with and without a stress overshoot and an inhomogeneous deformation. The supercooled liquid above the glass transition temperature (Tg) exhibited a Newtonian viscosity and superplastic-like behavior during isothermal tensile deformation. The metallic glass was elongated as much as 1000 % at high strain rates ranging from 10−2 s−1 to 10o s−1 without embrittlement. The maximum elongation to failure was in excess of 1800 % at a strain rate of 1.7×10−1 s−1 and at 503 K (Tg+20 K, 0.71Tm) under about 40 MPa.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 554: Symposium MM – Bulk Metallic Glasses , 1998 , 373
Copyright
Copyright © Materials Research Society 1999

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References

1. Inoue, A., Zhang, T. and Masumoto, T., Mater. Trans. JIM 31, 17 (1990).Google Scholar
2. Inoue, A., Zhang, T. and Masumoto, T., Mater. Trans. JIM 36, 391 (1995).Google Scholar
3. Inoue, A., Nishiyama, N. and Matsuda, T., Mater. Trans. JIM 37, 181 (1996).Google Scholar
4. Inoue, A. and Gook, J. S., Mater. Trans. JIM 36, 1180 (1995).Google Scholar
5. Peker, A. and Johnson, W. L., Appl. Phys. Lett. 63, 2342 (1993).Google Scholar
6. Drehman, A. J., Greer, A. L. and Turnbull, D., Appl. Phys. Lett. 41, 716 (1982).Google Scholar
7. Chen, H. S., Acta. Metall. 22, 1505 (1974).Google Scholar
8. Kawamura, Y., Shibata, T., Inoue, A. and Masumoto, T., Scripta Metall. Mater. 37, 431 (1997).Google Scholar
9. Kawamura, Y., Nakamura, T. and Inoue, A., Scripta Metall. Mater. 39, 301 (1998).Google Scholar
10. Kawamura, Y., Kato, H., Inoue, A. and Masumoto, T., Appl. Phys. Lett. 67, 2008 (1995).Google Scholar
11. Kawamura, Y., Kato, H., Inoue, A. and Masumoto, T., Int. J. Powder Metall. 33, 50 (1997).Google Scholar
12. Kawamura, Y., Shibata, T., Inoue, A. and Masumoto, T., Acta Mater. 37, 253 (1998).Google Scholar
13. Kawamura, Y., Shibata, T., Inoue, A. and Masumoto, T., Appl. Phys. Lett. 69, 1208 (1996).Google Scholar
14. Kawamura, Y., Shibata, T., Inoue, A. and Masumoto, T., Appl. Phys. Lett. 71, 779 (1997).Google Scholar
15. McClintock, F.A. and Argon, A.S., Mechanical Behavior of Materials, (Addison-Wesley Reading, MA, 1966), p. 290.Google Scholar
16. Pilling, J. and Ridley, N., Superplasticity in Crystalline Solids, (The Institute of Metals, London, 1989).Google Scholar
17. Fulcher, G.S., J. Am. Ceram. Soc. 6, 339 (1925).Google Scholar