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Effect of a minor element with a large mixing enthalpy difference on the plasticity of amorphous alloys

Published online by Cambridge University Press:  31 January 2011

Kyou-Hyun Kim ,
Hwi-Jun Kim  and
Jae-Chul Lee
Kyou-Hyun Kim
Affiliation:
Department of Materials Science and Engineering, Korea University, Seoul 136-701, Korea
Hwi-Jun Kim
Affiliation:
Division for Bulk Amorphous and Nano Materials, Korea Institute of Industrial Technology, Incheon 406-130, Korea
Jae-Chul Lee*
Affiliation:
Department of Materials Science and Engineering, Korea University, Seoul 136-701, Korea
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

In this study, we investigated the role of a minor alloying element in improving the plasticity of amorphous alloys. The plasticity of the amorphous alloys, Cu60−xZr30Ti10Bex, was drastically improved with increasing amount of Be and reached a maximum of 23% at Cu53Zr30Ti10Be7. It was observed that an atomistic-scale phase separation existed within the alloy, which resulted from the large difference in mixing enthalpy between the binary pairs (Be–Cu, Be–Zr). This atomistic-scale phase separation resulted in an open structure in which atomic rearrangements in the form of the creation of free volume and crystallization were facilitated during deformation. Here we discuss the origin of the enhanced plasticity by clarifying the effect of an additional element, whose mixing enthalpies with the major elements are significantly different, on the structural change of the amorphous alloy.

Keywords

AmorphousComposite
Type
Articles
Information
Journal of Materials Research , Volume 22 , Issue 9 , September 2007 , pp. 2558 - 2564
Copyright
Copyright © Materials Research Society 2007

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References

REFERENCES

1Spapen, F.: A microscopic mechanism for steady state inhomogeneous flow in metallic glasses. Acta Metall. 25, 407 1977CrossRefGoogle Scholar
2Sun, Y.F., Li, F.S., Guan, S.K., Tang, M.Q.Shek, C.H.: Structural characterization and mechanical properties of nanocrystal-containing Cu–Ti-based bulk metallic glass-forming alloys. J. Mater. Res. 22, 352 2007CrossRefGoogle Scholar
3Lee, J.C., Kim, Y.C., Ahn, J.P.Kim, H.S.: Enhanced plasticity in a bulk amorphous matrix composite: Macroscopic and microscopic viewpoint studies. Acta Mater. 53, 129 2005CrossRefGoogle Scholar
4Lee, C.M., Chae, S.W., Kim, H.J.Lee, J.C.: Role of nanocrystals on the plasticity of amorphous alloy. Met. Mater. Int. 13, 191 2007CrossRefGoogle Scholar
5Lee, J.G., Kim, H.S., Lee, S.H.Kim, N.J.: Deformation behavior of strip-cast bulk amorphous matrix composites containing various crystalline particles. Mater. Sci. Eng., A 449–451, 176 2007CrossRefGoogle Scholar
6Kim, K.H., Lee, S.W., Ahn, J.P., Fleury, E., Kim, Y.C.Lee, J.C.: A Cu-based amorphous alloy with a simultaneous improvement in glass forming ability and plasticity. Met. Mater. Int. 13, 21 2007CrossRefGoogle Scholar
7Lee, S.W., Lee, S.C., Kim, Y.C., Fleury, E.Lee, J.C.: Design of a bulk amorphous alloy containing Cu–Zr with simultaneous improvement in glass-forming ability and plasticity. J. Mater. Res. 22, 486 2007CrossRefGoogle Scholar
8Park, E.S., Chang, H.J., Kim, D.H., Ohkubo, T.Hono, K.: Effect of the substitution of Ag and Ni for Cu on the glass forming ability and plasticity of Cu60Zr30Ti10 alloy. Scripta Mater. 54, 1569 2006CrossRefGoogle Scholar
9Park, E.S.Kim, D.H.: Phase separation and enhancement of plasticity in Cu–Zr–Al–Y bulk metallic glasses. Acta Mater. 54, 2597 2006CrossRefGoogle Scholar
10Park, E.S., Kim, D.H., Ohkubo, T.Hono, K.: Enhancement of glass forming ability and plasticity by addition of Nb in Cu–Ti–Zr–Ni–Si bulk metallic glasses. J. Non-Cryst. Solids 351, 1232 2005CrossRefGoogle Scholar
11Inoue, A., Zhang, W., Zhang, T.Kurosaka, K.: High-strength Cu-based bulk glassy alloys in Cu–Zr–Ti and Cu–Hf–Ti ternary systems. Acta Mater. 49, 2645 2001CrossRefGoogle Scholar
12Tam, C.Y.Shek, C.H.: Effects of alloying on oxidation of Cu-based bulk metallic glasses. J. Mater. Res. 20, 2647 2005CrossRefGoogle Scholar
13Kim, J.H., Park, J.S., Park, E.S., Kim, W.T.Kim, D.H.: Estimation of critical cooling rates for glass formation in bulk metallic glasses through non-isothermal thermal analysis. Met. Mater. Int. 11, 1 2005CrossRefGoogle Scholar
14Thompson-Russell, K.C.Edington, J.W.: Electron Microscope Specimen Preparation Techniques in Materials Science Old Woking Surrey 1977 37CrossRefGoogle Scholar
15Saida, J., Setyawan, A.D.H., Kato, H.Inoue, A.: Nanoscale multistep shear band formation by deformation-induced nanocrystallization in Zr–Al–Ni–Pd bulk metallic glass. Appl. Phys. Lett. 87, 151907 2005CrossRefGoogle Scholar
16Gerling, R., Schimansky, F.P.Wagner, R.: Restoration of the ductility of thermally embrittled amorphous alloys under neutron-irradiation. Acta Metall. 35, 1001 1987CrossRefGoogle Scholar
17Egami, T., Maeda, K.Vitek, V.: Structural defects in amorphous solids—A computer-simulation study. Philos. Mag. A 41, 883 1980CrossRefGoogle Scholar
18Suh, D.Dauskardt, R.H.: Effects of open-volume regions on relaxation time-scales and fracture behavior of a Zr–Ti–Ni– Cu–Be bulk metallic glass. J. Non-Cryst. Solids 317, 181 2003CrossRefGoogle Scholar
19Lee, S.W., Huh, M.Y., Fleury, E.Lee, J.C.: Crystallization-induced plasticity of Cu–Zr containing bulk amorphous alloys. Acta Mater. 54, 349 2006CrossRefGoogle Scholar
20Lee, S.W., Huh, M.Y., Chae, S.W.Lee, J.C.: Mechanism of the deformation-induced nanocrystallization in a Cu-based bulk amorphous alloy under uniaxial compression. Scripta Mater. 54, 1439 2006CrossRefGoogle Scholar
21Inoue, A.Akira, T.: Recent progress in bulk glassy alloys. Mater. Trans., JIM 43, 1892 2002CrossRefGoogle Scholar
22Rassouly, S.M.K.: The packing density of ‘perfect’ binary mixtures. Powder Technol. 103, 145 1999CrossRefGoogle Scholar
23Boer, F.R.D., Boom, R., Mattens, W.C.M., Miedema, A.R.Niessen, A.K.: Cohesion in Metals North-Holland Physics Publishing Amsterdam, The Netherlands 1988Google Scholar
24Lee, J.C., Kim, Y.C., Ahn, J.P., Kim, H.S., Lee, S.H.Lee, B.J.: Deformation-induced nanocrystallization and its influence on work hardening in a bulk amorphous matrix composite. Acta Mater. 52, 1525 2004CrossRefGoogle Scholar
25Kim, H.S., Estrin, Y.Bush, M.B.: Constitutive modelling of strength and plasticity of nanocrystalline metallic materials. Mater. Sci. Eng., A 316, 195 2001CrossRefGoogle Scholar
26Liu, L., Chen, K.C., Sun, M.Chen, Q.: The effect of the addition of Ta on the structure, crystallization and mechanical properties of Zr–Cu–Ni–Al–Ta bulk metallic glasses. Mater. Sci. Eng., A 445–446, 697 2006Google Scholar
27Kim, Y.C., Lee, J.C., Cha, P.R., Ahn, J.P.Fleury, E.: Enhanced glass forming ability and mechanical properties of new Cu-based bulk metallic glasses. Mater. Sci. Eng., A 437, 248 2006CrossRefGoogle Scholar
28Zhang, G.Q., Jiang, Q.K., Chen, L.Y., Shao, M., Liu, J.F.Jiang, J.Z.: Synthesis of centimeter-size Ag-doped Zr–Cu–Al metallic glasses with large plasticity. J. Alloys Compd. 424, 176 2006CrossRefGoogle Scholar
29Liu, L., Qiu, C.L., Sun, M., Chen, Q., Chan, K.C.Pang, G.K.H.: Improvements in the plasticity and biocompatibility of Zr–Cu–Ni–Al bulk metallic glass by the microalloying of Nb. Mater. Sci. Eng., A 449–451, 193 2006Google Scholar