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Solidified microstructure evolution of Mn-Sb near-eutectic alloy under high magnetic field conditions

  • Qiang Wang (a1), Ao Gao, Tie Liu (a1), Feng Liu (a2), Chao Zhang and Jicheng He (a1)...

Abstract

Mn-90.8 wt%Sb alloys were solidified without and with high magnetic fields to investigate the effects of high magnetic fields on the structure evolution of the alloys. It was found that there were only MnSb/Sb eutectics without any primary phase in the alloy at 0 T, whereas a small amount of primary MnSb dendrites appeared in the MnSb/Sb eutectic matrix when the magnetic flux density was 4.4 T. In magnetic fields of 6.6, 8.8, and 11.5 T, both of two primary phases, i.e., MnSb and Sb, occurred in the matrix. In addition, the volume fraction of these two primary phases increased with increasing magnetic flux density. In magnetic fields of 8.8 and 11.5 T, primary MnSb dendrites aligned parallel to the magnetic field direction and gathered at the edge of the specimens. In contrast, primary Sb dendrites gathered in the center region of the specimens.

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a) Address all correspondence to this author. e-mail: wangq@epm.neu.edu.cn

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1Qi, J. and Wakayama, N.I.: Suppression of natural convection in nonconducting and lowconducting fluids by the application of a static magnetic field. Mater. Trans., JIM 41, 970 (2000).
2Mikelson, A.E. and Karklin, Y.K.: Control of crystallization processes by means of magnetic fields. J. Cryst. Growth 52, 524 (1981).
3Rango, P.D., Lees, M., Lejay, P., Sulpice, A., Tournier, R., Ingold, M., Germi, P., and Pernet, M.: Texturing of magnetic materials at high temperature by solidification in a magnetic field. Nature 349, 770 (1991).
4Morikawa, H., Sassa, K., and Asai, S.: Control of precipitating phase alignment and crystal orientation by imposition of a high magnetic field. Mater. Trans., JIM 39, 814 (1998).
5Asai, S., Sassa, K., and Tahashi, M.: Crystal orientation of nonmagnetic materials by imposition of a high magnetic field. Sci. Technol. Adv. Mater. 4, 455 (2003).
6Yasuda, H., Ohnaka, I., and Yamamoto, Y.: Formation of crystallographically aligned BiMn grains by semi-solid processing of rapidly solidified Bi-Mn alloys under a magnetic field. Mater. Trans., JIM 44, 2207 (2003).
7Li, X., Ren, Z.M., and Fautrelle, Y.: Effect of high magnetic fields on the microstructure in directionally solidified Bi-Mn eutectic alloy. J. Cryst. Growth 299, 41 (2007).
8Wang, Q., Liu, T., Gao, A., Zhang, C., Wang, C.J., and He, J.C.: A novel method for in situ formation of bulk layered composites with compositional gradients by magnetic field gradient. Scr. Mater. 56, 1087 (2007).
9Liu, T., Wang, Q., Gao, A., Zhang, C., Wang, C.J., and He, J.C.: Fabrication of functionally graded materials by a semi-solid forming process under magnetic field gradients. Scr. Mater. 57, 992 (2007).
10Wang, C.J., Wang, Q., Wang, Y.Q., Huang, J., and He, J.C.: Effects of high magnetic fields on the distribution of Si in solidified structures of Al-Si alloy. Acta Phys. Chim. Sin. 55, 648 (2006).
11Liu, T., Wang, Q., Zhang, C., Gao, A., Lou, C.S., and He, J.C.: Nonfaceted-faceted-nonfaceted microstructural transformation of primary Sb in Mn-95.2 wt% Sb hypereutectic alloy induced by high magnetic fields. Magnetohydrodynamics (in press).
12Kurz, W. and Fisher, D.J.: Dendrite growth in eutectic alloys: The coupled zone. Int. Mater. Rev. 5-6, 177 (1979).
13Takaimchi, I. and Roderick, I.L.G.: The Physical Properties of Liquid Metals (Oxford University Press, New York, 1998), p. 73.
14Liu, T., Wang, Q., Gao, A., Wang, C.J., Wei, N., and He, J.C.: Effects of high magnetic fields on solidification in Mn-89.7 wt%Sb alloy, in Solidification Processing 2007, edited by Jones, H. (Proc. 5th Decennial Int. Conf. on Solidification Processing, Sheffield, UK, 2007), p. 416.
15Wang, Q., Liu, T., Zhang, C., Gao, A., Li, D.G., and He, J.C.: Effect of high magnetic fields on microstructures of Mn-90.4 wt%Sb hypoeutectic alloy. Sci. Technol. Adv. Mater. (in press).
16Wang, C.J., Wang, Q., Wang, Z.Y., Li, H.T., Nakajima, K., and He, J.C.: Phase alignment and crystal orientation of Al3Ni in Al-Ni alloy by imposition of a uniform high magnetic field. J. Cryst. Growth 310, 1256 (2008).

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Solidified microstructure evolution of Mn-Sb near-eutectic alloy under high magnetic field conditions

  • Qiang Wang (a1), Ao Gao, Tie Liu (a1), Feng Liu (a2), Chao Zhang and Jicheng He (a1)...

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