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Solidification Analyses for the Fabrication of Bulky Multicomponent Metallic Glasses and their Properties

Published online by Cambridge University Press:  15 February 2011

Akihisa Inoue ,
Yoshiyuki Shinohara  and
Yoshihiko Yokoyama
Akihisa Inoue
Affiliation:
Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Sendai 980-77, Japan
Yoshiyuki Shinohara
Affiliation:
Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Sendai 980-77, Japan
Yoshihiko Yokoyama
Affiliation:
Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Sendai 980-77, Japan
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Abstract

The liquid-crystalline transformation during continuous cooling was examined for a Zr60Al10Ni10Cu15Pd5 alloy which was ejected into a wedge-shape cavity in a copper mold or solidified on a copper hearth by unidirectional arc melting. The structure consists of a glassy phase in the wedge angles smaller than 10 degrees and changes to glassy and crystalline phases in the higher angle range. The start (Cs) and termination (Ct) points for the transformation were determined and the continuous-cooling-transformation (C. C. T. ) curves were constructed. The nose temperature (Tn) and the time (tn) up to the nose point in the C. C. T. curves were 1018 K and 0.93 s. The critical cooling rate for glass formation defined by (Tm-Tn)/tn is 110 K/s. Furthermore, with the aim of clarifying a solidification condition for formation of a bulk glassy alloy by unidirectional arc melting, the relation between the formation of a glassy phase and the solidification parameters of moving velocity of liquid/solid interface (V), temperature gradient (G) and cooling rale (R) was examined. The glassy phase was obtained in the condition of V>3 mm/s, G>4 K/mm and R>40 K/s. The supercooling reaches 385 K at 40 K/s. The large supercooling ability is presumably due to the formation of a highly dense randomly packed structure where the nucleation of a crystalline phase and the atomic rearrangement for growth reaction are difficult.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 400: Symposium E – Metastable Metal-Based Phases and Microstructures , 1995 , 235
Copyright
Copyright © Materials Research Society 1996

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References

1. Inoue, A., Zhang, T. and Masumoto, T., Mater. Trans., JIM, 30(1989), 965.Google Scholar
2. Inoue, A., Yamaguchi, H., Zhang, T. and Masumoto, T., Mater. Trans., JIM, 31(1990), 104.Google Scholar
3. Inoue, A., Kita, K., Zhang, T. and Masumoto, T., Mater. Trans., JIM, 30(1989), 722.Google Scholar
4. Inoue, A., Nakamura, T., Nishiyama, N. and Masumoto, T., Mater. Trans., JIM, 33(1992), 937.Google Scholar
5. Inoue, A., Ohtera, K., Kita, K. and Masumoto, T., Jpn. J. Appl. Phys., 27(1988), L2248.Google Scholar
6. Inoue, A., Kohinata, M., Ohtera, K., Tsai, A. P. and Masumoto, T., Mater. Trans., JIM, 30(1989) 378.Google Scholar
7. Kim, S.G., Inoue, A. and Masumoto, T.. Mater. Trans., JIM, 31(1990), 929.Google Scholar
8. Inoue, A., Zhang, T. and Masumoto, T., Mater. Trans., JIM, 31(1990). 177.Google Scholar
9. Inoue, A., Zhang, T. and Masumoto, T., "Glass-Forming Ability of Alloys", J. Non-Cryst. Solids, 156–158(1993), 473.Google Scholar
10. Zhang, T., Inoue, A. and Masumoto, T., "The Effect of Atomic Size on the Stability of Supercooled Liquid for Amorphous (Ti, Zr, Hf)65Cu25Al10 Alloys", Mater. Lett., 15(1993), 379.Google Scholar
11. Inoue, A., Nishiyama, N., Amiya, K., Zhang, T. and Masumoto, T., "Ti-Based Amorphous Alloys with a fide Supercooled Liquid Region", Mater. Lett., 19(1994), 131.Google Scholar
12. Amiya, K., Nishiyama, N., Inoue, A. and Masumoto, T., "Mechanical Strength and Thermal Stability of Ti-Based Amorphous Alloys with Large Glass-Forming ability", Mater. Sci. Eng. A179/180(1994).692.Google Scholar
13. Peker, A. and Johnson, W. L., "A Highly Processable Metallic Grass:Zr41.2Ti13.8Cu12.5Ni10.0Be22.5", APPL. Phys. Lett., 63(1993), 2342.Google Scholar
14. Inoue, A., Zhang, T., Nishiyama, N., Ohba, K. and Masumoto, T., "Preparation of 16 mm Diameter Rod of amorphous Zr65Al7.5Ni10Cu7.5Cu17.5 Alloy", Mater. Trans., JIM, 34(1993), 1234.Google Scholar
15. Inoue, A. and Zhang, T., Metals, Agne Publ. Co., Tokyo, (1994), p. 47.Google Scholar
16. Inoue, A., Kato, A., Zhang, T., Kim, S. G. and Masumoto, T., "Mg-CuY .Amorphous Alloys with High Mechanical Strengths Produced by a Metallic Mold Casting Method", Mater. Trans., JIM, 32(1991), 609.Google Scholar
17. Inoue, A., Zhang, T. and Masumoto, T., "Preparation of Bulky Amorphous Zr-Al-Co-Ni-Cu Alloys by Copper Mold Casting and Their Thermal and Mechanical Properties", Mater. Trans., JIM, 36(1995),Google Scholar
18. Inoue, A., Yokoyama, Y., Shinohara, Y. and Masumoto, T., "Preparation of Bulky Zr-Based Amorphous alloys by a Zone Melting Method", Mater. Trans., JIM, 35(1994), 923.Google Scholar
19. Inoue, A., Zhang, T. and Masumoto, T., Mater. Trans., JIM, 36(1995), 1184.Google Scholar
20. Inoue, A., Mater. Sci. Forum, 179–181(1995), 691.Google Scholar
21. Inoue, A., Zhang, T., Ohba, K. and Masumoto, T., "Continuous-Cooling-Transformation (CCT) Curves for Zr-Al-Ni-Cu Supercooled Liquids to Amorphous for Crystalline Phase", Mater. Trans., JIM. 36(1995), 876.Google Scholar
22. Inoue, A., Shinohara, Y., Yokoyama, Y. and Masumoto, T., "Solidification Analyses of Bulky Zr60Al10Ni10Cu15Pd5 Glass Produced by Casting to Wedge-Shape Copper Mold", Mater. Trans., JIM, 36(1995), No. 10, in press.Google Scholar
23. Zhang, T. and Inoue, A., unpublished research, (1994).Google Scholar
24. Matsubara, E., Tamura, T., Waseda, Y., Inoue, A., Zhang, T. and Masumoto, T., "Structural Study of Zr60Al15Ni25 Amorphous Alloys with a Wide Supercooled Liquid Region by the Anomalous X-Ray Scattering (AXS) Method", Mater. Trans., JIM, 33(1992), 873.Google Scholar
25. Mastubara, E., Tamura, T., Waseda, Y., Inoue, A., Kohinata, M. and Masumoto, T., "Structural Study of Mg50Ni30La20 Alloy by the Anomalous X-Ray Scattering Method", Mater. Trans., JIM, 31(1990), 228.Google Scholar
26. Inoue, A., Zhang, T., Matsubara, E., Waseda, Y. and Masumoto, T., "Reuctrilizaton of An Embrittled La55Al25Ni20 Alloys by Water Quenching from Supercooled Liquid", Mater. Trans., JIM, 32(1991). 201.Google Scholar
27. Inoue, A., "High Strength Bulk Amorphous Alloys with Low Critical Cooling Rates", Mater. Trans., JIM, 36(1995), 866.Google Scholar