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

Published online by Cambridge University Press:  31 January 2011

Qiang Wang ,
Ao Gao ,
Tie Liu ,
Feng Liu ,
Chao Zhang  and
Jicheng He
Qiang Wang*
Affiliation:
Key Laboratory of Electromagnetic Processing of Materials (Ministry of Education), Northeastern University, Shenyang 100036, China
Tie Liu
Affiliation:
Key Laboratory of Electromagnetic Processing of Materials (Ministry of Education), Northeastern University, Shenyang 100036, China
Feng Liu
Affiliation:
State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an, Shanxi 710072, China
Jicheng He
Affiliation:
Key Laboratory of Electromagnetic Processing of Materials (Ministry of Education), Northeastern University, Shenyang 100036, China
*
a) Address all correspondence to this author. e-mail: wangq@epm.neu.edu.cn
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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.

Keywords

AlloyMicrostructure
Type
Articles
Information
Journal of Materials Research , Volume 24 , Issue 7 , July 2009 , pp. 2331 - 2337
Copyright
Copyright © Materials Research Society 2009

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References

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).Google Scholar
2Mikelson, A.E. and Karklin, Y.K.: Control of crystallization processes by means of magnetic fields. J. Cryst. Growth 52, 524 (1981).CrossRefGoogle Scholar
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).CrossRefGoogle Scholar
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).CrossRefGoogle Scholar
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).CrossRefGoogle Scholar
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).CrossRefGoogle Scholar
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).CrossRefGoogle Scholar
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).Google Scholar
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).Google Scholar
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).Google Scholar
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).Google Scholar
12Kurz, W. and Fisher, D.J.: Dendrite growth in eutectic alloys: The coupled zone. Int. Mater. Rev. 5-6, 177 (1979).Google Scholar
13Takaimchi, I. and Roderick, I.L.G.: The Physical Properties of Liquid Metals (Oxford University Press, New York, 1998), p. 73.Google Scholar
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.Google Scholar
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).Google Scholar
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).CrossRefGoogle Scholar