Simulation of the Solidification Parameters of Single Crystal Casting

Abstract:

The effects of thermal physical parameters and boundary conditions on investment solidification parameters were obtained using a computer simulation system. Directional solidification parameters of single crystal superalloy include the temperature distribution, the position and the shape of the solid/liquid interface in the mushy zone of the solidifying blade casting. Commercial finite-element analysis software, ProCAST, was used to simulate the solidification processes of the castings of single crystal DD6. The simulation results indicate that the predictions of the temperature show little sensitivity to the thermal physical parameters and boundary conditions. Further, it has also been shown that the location and the shape of solid/liquid interface is related to the boundary conditions of simulation. Increasing the value of interface heat transfer coefficient decreases the width of mushy zone.

• Periodical: Materials Science Forum (Volumes 638-642)
• Pages: 2251-2256
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.638-642.2251
• Online since: January 2010
• Authors: H.P. Jin, Jia Rong Li, Shi Zhong Liu
• Keywords: Numerical Simulation, Single Crystal Superalloy Castings, Solidification Parameters

References

[1] K.C. Mills and P.D. Lee: International Symposium on Microgravity Research & Applications in Physical Sciences and Biotechnology. 2001, p.555.

[2] Liqiang et al.: Material Science and Technology. Vol. 13(1) (2005), p.94 (in chinese).

[3] X.L. Yang, P.D. Lee, and N. D'Souza: JOM May (2005), p.40.

[4] X.L. Yang, P.D. Lee, R. F. Brooks and R. Wunderlich: Superalloys 2004, ed. K.A. Green et al. (Warrendale, PA: TMS, 2004), p.925.

[5] Philippe Bernard Lucien Auburtin. Determination of the influence of growth front angle on freckle formation in superalloys. The university of British Columbia. (1998).

[6] A. B. Shapiro, TOPAZ: A finite element heat conduction code for analyzing 2-D solids, (Lawrence Livermore Laboratory, California 1984).

[7] ProCAST-The Professional Casting Simulation System User Manual, Universal Energy Systems, Inc., Ohio, (1988).

[8] R. W. Lewis and P. M. Roberts: Modeling the Flow and Solidification of Metals, ed. T. J. Smith, Martinus Nijhoff, Boston (1987).

[9] R.B. Bird, W.E. Stewart, and E.N. Lightfoot: Transport phenomena (Singapore, John Wiley & Sons, Inc., 1960), 318.

[10] ProCAST User's Manual & Technical Reference (UES Software, Inc., 1998), C-10.

[11] Li Jiarong, Zhong Zhenggang, Tang Dingzhong, et al.: Superalloys 2000, ed. Pollock T M, Kissinger R D, Bowman R R, et al. (Warrendale, PA: TMS, 2000). p.777.

[12] H.P. Jin et al. Study of Heat Transfer Coefficient Used in the Unidirectional Solidification Simulation Based on Orthogonal Design. Rare Metal Materials and Engineering, in press.

DOI: 10.1016/s1875-5372(10)60098-7

[13] P.N. Quested and M. Mclean: Mater. Sci. Eng. Vol. 65 (1) (1984), p.171.