Effects of Liquid Core Reduction during Solidification of Pb2.5wt%Sb Thin Slabs

Abstract:

The influence of thickness reduction during solidification of Pb2.5wt%Sb thin slabs in the microstructure was experimentally analyzed using a physical simulator consisted of a water cooled mould with a moveable sidewall, driven by a hydraulic piston, to squeeze the liquid core during the solidification. Experiments were carried out in order to obtain slabs without thickness reduction and with thickness reduction of about 20% and 40%. The microstructures are revealed in order to analyze the influence of the thickness reduction applied in the formation of central equiaxial structure and in the secondary dendrite arm spacing. From the results it was observed that increasing the thickness reduction increases the extension of the equiaxial structure.

• Periodical: Materials Science Forum (Volume 508)
• Pages: 379-384
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.508.379
• Online since: March 2006
• Authors: J.L. Peralta, R.G. Santos
• Keywords: Microstructure, Solidification, Thin Slabs

References

[1] K. Wünnenberg and K. Schwerdtfeger: I&SM (1995), p.25.

[2] R. Gottardi, L. Nannini, A.D. Martegani: Metallurgical Plant and Technology International Vol. 3 (1992), p.46.

[3] J.P. Birat: La Revue de Metallurgie-CIT (1998), p.1387.

[4] J.S. Park, M. Ajmal, R. Priestner: ISIJ International Vol. 40 (2000), p.380.

[5] D. Kothe et al.: Steelmaking Conf. Proc. (1995), p.23.

[6] T. El-Gammal et al.: Proc. Symp. Continuous Casting Res., Egypt (1992), p.323.

[7] R. Kaspar and P. Flüβ: steel Res. Vol. 62 (1991), p.501.

[8] E. Essadiqi et al: 39 MWSP Conference Proceeding (1998), p.883.

[9] R. Priestner and C. Zhou: Ironmaking and Steelmaking Vol. 22 (1995), p.326.

[10] R.G. Santos et al: Proceedings of International Conference on Advanced Materials Processing Technologies Vol. 1 (2001), p.9.