Directional Solidification of Undercooled Hypoeutectic Silver-Copper Alloy Melt

Abstract:

Article Preview

Directional solidification of the undercooled melt which combines melt undercooling with conventional directional solidification is a new method of obtaining directional structure. This method is used to realize the directional solidification of the undercooled Ag70.3Cu29.7 melt. The experiment is performed in two steps: The undercooled melt is obtained by glass fluxing, and the above specimen is remelted and excited with Ga-In-Sn coolant. By this method, directional solidification dendrites of Ag70.3Cu29.7 alloy are achieved successfully. The columnar dendrites are straight and fine. The primary arm spacing is 21µm in average for a 65K undercooling, as compared to 38µm for a 32K undercooling. This confirms that higher undercooling promotes finer dendritic microstructures.

Info:

Periodical:

Materials Science Forum (Volumes 475-479)

Main Theme:

Edited by:

Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie

Pages:

2607-2610

Citation:

Y. Y. Lu et al., "Directional Solidification of Undercooled Hypoeutectic Silver-Copper Alloy Melt", Materials Science Forum, Vols. 475-479, pp. 2607-2610, 2005

Online since:

January 2005

Export:

Price:

$38.00

[1] R. Willnecker, D.M. Herlach and B. Feuerbacher: J. Appl. Phys. Lett. Vol. 56 (1990), p.324.

[2] J. Lipton, M.E. Glicksman and W. Kurz: Mater. Sci. Eng. Vol. 65A (1984), p.57.

[3] D.M. Herlach: Mater. Sci. Eng. Vol. 45A (1994), p.80.

[4] B. Lux, G. Haour, F. Mollard: Metall. Vol. 35 (1981), p.1235.

[5] J. Stanescu, P.R. Sahm, J. Schadlich-Stubenrauch et al.: 40th Annual Technical Meeting: Investment Casting Institute, Las Vegas Vol. 29 (1992), p.4.

[6] I.A. Wangnar, P.R. Sahm: The Minerals Metals Materials Society 1996, p.497.

[7] D.M. Herlach, C. Caesar, U. Koster and R. Willnecker: Mater. Sci. Eng. Vol. 98A (1988), p.339.

[8] P.R. Sham, C. S. Kiminami and W. Axmann: Mater. Sci. Lett. Vol. 8 (1989), p.201.

[9] R.J. Bayuzick, G.A. Bertero and W. Axmann: Metall. Trans. Vol. 22A(1991), p.2713.

[10] Xie Faqin, Zhang Jun, Mao Xiemin, Li Delin and Fu Hengzhi: J. Mater. Proc. Tech. Vol. 63 (1997), p.776.

DOI: https://doi.org/10.1016/s0924-0136(96)02722-7

[11] Fu Hengzhi, Xie Faqin: Sci. Tech. Adv. Mater. Vol. 2 (2001), p.193.

[12] R. Schlcip, D.M. Herlach, B. Feuarbacher: Appl. Phys. Lett. Vol. 62(1990), p.2707.

[13] J.H. Perepezko: Metal. Sci. Eng. Vol. 65(1984), p.123.

[14] R. Trivedi, P. Magnin, W. Kurz: Acta Metall. Vol. 35(1987), p.971.

Fetching data from Crossref.
This may take some time to load.