Research PapersNo Access

AXIAL SEGREGATION IN UNSTEADY DIFFUSION-DOMINATED SOLIDIFICATION IN A FINITE AMPOULE

ADRIAN NECULAE

Department of Physics, West University of Timisoara, 4 Blv. Parvan, 300223 Timisoara, Romania

Search for more papers by this author

and

AGNETA M. BALINT

Department of Physics, West University of Timisoara, 4 Blv. Parvan, 300223 Timisoara, Romania

Search for more papers by this author

https://doi.org/10.1142/S021797920603487XCited by:0 (Source: Crossref)

Abstract

The paper deals with axial segregation in unsteady diffusion dominated directional solidification from melt of a binary alloy in a finite cylindrical ampoule. The study focuses on the influence of the finite length of the ampoule on the concentration profile in a crystal obtained in a microgravity environment. The results are compared to those reported by Kim et al. [J. Crystal Growth183, 490 (1998)] for an infinite crystal. Numerical simulations are performed for two different situations: the initial transient solidification when the melt is uniform in composition, and the multipass solidification when the crystal is grown from the melt, formed by re-melting a crystal with an initial axial composition profile.

Keywords:

You currently do not have access to the full text article.
Recommend the journal to your library today!

References

B. R. Pamplin , Crystal Growth ( Pergamon Press , Oxford , 1980 ) . Google Scholar
W. D. Bennon and F. P. Incropera, Int. J. Heat Mass Transfer 30(10), 2161 (1987), DOI: 10.1016/0017-9310(87)90094-9. Crossref, Web of Science, Google Scholar
C. Beckermann and R. Viskanta, Appl. Mech. Rev. 46(1), 1 (1993). Crossref, Web of Science, ADS, Google Scholar
D. H. Matthiesenet al., J. Crystal Growth 85, 557 (1987), DOI: 10.1016/0022-0248(87)90492-1. Crossref, Web of Science, ADS, Google Scholar
J. Kanget al., J. Crystal Growth 140, 435 (1994), DOI: 10.1016/0022-0248(94)90322-0. Crossref, Web of Science, ADS, Google Scholar
A. G. Ostrogorsky and G. Muller, J. Crystal Growth 137, 64 (1994), DOI: 10.1016/0022-0248(94)91248-3. Crossref, Web of Science, ADS, Google Scholar
A. F. Wittet al., J. Electrochem. Soc. 122, 276 (1975), DOI: 10.1149/1.2134195. Crossref, Web of Science, Google Scholar
L. L. Zheng, D. J. Larson Jr. and H. Zhang, J. Crystal Growth 191, 243 (1998), DOI: 10.1016/S0022-0248(98)00112-2. Crossref, Web of Science, ADS, Google Scholar
B. Xiong, Z. M. Tang and W. R. Hu, Microgravity Sci. Technol. VI/2, 131 (1993). Web of Science, Google Scholar
S. H. Kim, S. A. Korpela and A. Chait, J. Crystal Growth 183, 490 (1998), DOI: 10.1016/S0022-0248(97)00438-7. Crossref, Web of Science, ADS, Google Scholar
E. Tulcan-Paulescu, A. M. Balint and S. Balint, J. Crystal Growth 247, 313 (2003), DOI: 10.1016/S0022-0248(02)02055-9. Crossref, Web of Science, ADS, Google Scholar
V. G. Smith, W. A. Tiller and J. W. Rutter, Can. J. Phys. 33, 723 (1955). Crossref, Web of Science, ADS, Google Scholar
C. J. Chang and R. A. Brown, J. Crystal Growth 63, 343 (1987), DOI: 10.1016/0022-0248(83)90225-7. Crossref, Web of Science, ADS, Google Scholar
K. Oeda, J. Fac. Sci. Univ. Tokio, Sect. IA, Math 36, 419 (1989). Google Scholar
J. L. Lions , Equations Differentielles Operationnelles Et Problemes Aux Limites ( Springer-Verlag , Heidelberg , 1961 ) . Crossref, Google Scholar
http://www.freefem.org/ff+++/FreeFEM Documentation . Google Scholar