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Formation of Mg–Cu–Ni–Ag–Zn–Y–Gd Bulk Glassy Alloy by Casting into Cone-shaped Copper Mold in Air Atmosphere

Published online by Cambridge University Press:  01 June 2005

E.S. Park  and
D.H. Kim
E.S. Park
Affiliation:
Center for Non-crystalline Materials, Department of Metallurgical Engineering, Yonsei University, Seoul 120-749 Korea
D.H. Kim*
Affiliation:
Center for Non-crystalline Materials, Department of Metallurgical Engineering, Yonsei University, Seoul 120-749 Korea
*
a) Address all correspondence to this author. e-mail: [email protected]
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Abstract

A new Mg–Cu–Ni–Ag–Zn–Y–Gd alloy with significantly improved glass forming ability (GFA) was developed in this work. Mg65Cu7.5Ni7.5Ag5Zn5Y5Gd5 bulk metallic glass (BMG) with a diameter of 14 mm was successfully fabricated by conventional copper mold casting method in air atmosphere. The critical cooling rate for glass formation was estimated to be about 20 K/s. When the maximum diameter for glass formation was compared with those previously reported for Mg-based alloys, the Mg65Cu7.5Ni7.5Ag5Zn5Y5Gd5 alloy showed the highest GFA. However, when the GFA was compared with those of Mg-TM-RE alloys (TM: Cu, Ni, Zn, and Ag; RE: Y and Gd), the significant improved GFA of the Mg–Cu–Ni–Zn–Ag–Y–Gd alloy cannot be properly represented by ΔTx, Trg, K, and γ parameters. In contrast to most of the Mg-based BMGs reported so far, the Mg65Cu7.5Ni7.5Ag5Zn5Y5Gd5 BMG exhibits yielding and plastic deformation during compressive loading.

Keywords

Mechanical propertiesMetallic glass
Type
Articles
Information
Journal of Materials Research , Volume 20 , Issue 6 , June 2005 , pp. 1465 - 1469
Copyright
Copyright © Materials Research Society 2005

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References

REFERENCES

1Peker, A. and Johnson, W.L.: A highly processable metallic glass: Zr41.2Ti13.8Cu12.5Ni10.0Be22.5. Appl. Phys. Lett. 63, 2342 (1993).CrossRefGoogle Scholar
2Jung, Y.C. and Nakai, K.: Effects of Cr on the early crystallization stages of Nd4.5Fe77−xCrxB18.5 amorphous ribbons. Metall. Mater. Int. 9, 337 (2003).CrossRefGoogle Scholar
3Inoue, A., Zhang, W., Zhang, T. and Kurosaka, K.: High-strength Cu-based bulk glassy alloys in Cu–Zr–Ti and Cu–Hf–Ti ternary systems. Acta Meter. 49, 2645 (2001).CrossRefGoogle Scholar
4Lee, J.Y., Bae, D.H., Lee, J.K. and Kim, D.H.: Bulk glass formation in the Ni–Zr–Ti–Nb–Si–Sn alloy system. J. Mater. Res. 19, 2221 (2004).CrossRefGoogle Scholar
5Kim, W.B., Ye, B.J. and Yi, S.: Amorphous phase formation in a Ni–Zr–Al–Y alloy system. Metall. Mater. Int. 10, 1 (2004).CrossRefGoogle Scholar
6Park, E.S. and Kim, D.H.: Design of bulk metallic glasses with high glass forming ability and enhancement of plasticity in metallic glass matrix composites. Metall. Mater. Int. 11, 19 (2005).CrossRefGoogle Scholar
7Men, H. and Kim, D.H.: Fabrication of ternary Mg–Cu–Gd bulk metallic glass with high glass-forming ability under air atmosphere. J. Mater. Res. 18, 1502 (2003).CrossRefGoogle Scholar
8Park, 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).CrossRefGoogle Scholar
9Park, E.S. and Kim, D.H. Effect of atomic configuration and liquid stability on the glass forming ability of Ca-based metallic glasses. (unpublished).Google Scholar
10Inoue, 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
11Inoue, A., Nakamura, T., Nishiyama, N. and Masumoto, T.: Mg–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
12Park, E.S., Kang, H.G., Kim, W.T. and Kim, D.H.: The effect of Ag addition on the glass-forming ability of Mg–Cu–Y metallic glass alloys. J. Non-Cryst. Solids 279, 154 (2001).CrossRefGoogle Scholar
13Men, H., Hu, Z.Q. and Xu, J.: Bulk metallic glass formation in the Mg–Cu–Zn–Y system. Scrita Mater. 46, 699 (2002).CrossRefGoogle Scholar
14Amiya, K. and Inoue, A.: Preparation of bulk glassy Mg65Y10Cu15Ag5Pd5 alloy of 12 mm in diameter by water quenching. Mater. Trans. 42, 543 (2001).CrossRefGoogle Scholar
15Ma, H., Ma, E. and Xu, J.: A new Mg65Cu7.5Ni7.5Zn5Ag5Y10 bulk metallic glass with strong glass-forming ability. J. Mater. Res. 18, 2288 (2003).CrossRefGoogle Scholar
16Park, E.S., Lee, J.Y. and Kim, D.H. The effect of Ag addition on the improvement of glass forming ability and plasticity of Mg–Cu–Gd bulk metallic glass. (unpublished).Google Scholar
17Park, E.S., Kim, W.T. and Kim, D.H.: Bulk glass formation in Mg–Cu–Ag–Y–Gd alloy. Mater. Trans. 45, 2474 (2004).CrossRefGoogle Scholar
18Men, H., Kim, W.T. and Kim, D.H.: Fabrication and mechanical properties of Mg65Cu15Ag5Pd5Gd10 bulk metallic glass. Mater. Trans. 44, 2141 (2003).CrossRefGoogle Scholar
19Lin, X.H. and Johnson, W.L.: Formation of Ti–Zr–Cu–Ni bulk metallic glasses. J. Appl. Phys. 78, 6514 (1995).CrossRefGoogle Scholar
20Hruby, A.: Evaluation of glass-forming tendency by means of DTA. Czech. J. Phys. 22, 1187 (1972).CrossRefGoogle Scholar
21Lu, Z.P. and Liu, C.T.: A new glass-forming ability criterion for bulk metallic glasses. Acta Mater. 50, 3501 (2002).CrossRefGoogle Scholar
22Greer, A.L.: Confusion by design. Nature 366, 303 (1993).CrossRefGoogle Scholar
23Inoue, A., Negishi, T., Kimura, H.M., Zhang, T. and Yavari, R.: High packing density of Zr- and Pd-based bulk amorphous alloys. Mater. Trans. JIM 39, 318 (1998).CrossRefGoogle Scholar
24Louzguine, D.V. and Inoue, A.: Nanocrystallization of Cu–(Zr or Hf) –Ti metallic glasses. J. Mater. Res. 17, 2112 (2002).CrossRefGoogle Scholar
25Yuan, G. and Inoue, A.: The effect of Ni substitution on the glass-forming ability and mechanical properties of Mg–Cu–Gd metallic glass alloys. J. Alloys Compd. 387, 134 (2005).CrossRefGoogle Scholar
26Xing, L-Q., Li, Y., Ramesh, K.T., Li, J. and Hufnagel, T.C.: Enhanced plastic strain in Zr-based bulk amorphous alloys. Phys. Rev. 64, 180201 (2001).CrossRefGoogle Scholar
27Lee, M.H., Lee, J.Y., Bae, D.H., Kim, W.T., Sordelet, D.J. and Kim, D.H.: A development of Ni-based alloys with enhanced plasticity. Intermetallics 12, 1133 (2004).CrossRefGoogle Scholar
28Park, E.S., Kim, D.H., Ohkubo, T. and 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 (in press).Google Scholar