Skip to main content Accessibility help
×
Home

Effect of a high magnetic field on the morphological and crystallographic features of primary Al6Mn phase formed during solidification process

  • Lei Li (a1), Zhihao Zhao (a1), Yubo Zuo (a1), Qingfeng Zhu (a1) and Jianzhong Cui (a1)...

Abstract

Morphological and crystallographic effects of a high magnetic field on the primary Al6Mn phase formed during the solidification of hypereutectic Al–3.25wt%Mn were investigated. Without the field, the primary Al6Mn crystals are mainly concentrated in the lower part and reveal a dispersed needle-like shape. In three dimension, the needles are in the form of a quadrangular prism (laterally bound by {110} and preferentially growing along <001>). When the magnetic field is applied, they tend to be distributed homogenously and show some extra agglomerate- or chain-like forms (preferentially extending along <100>). Furthermore, they also tend to preferentially orient with <100> parallel to the field direction. The homogenous distribution is caused by the magnetic viscosity resistance force. The “agglomerates” or “chains” are the result of a “bifurcation effect” due to the breakdown at the sharp edges of the quadrangular prisms. The preferential orientation should be attributed to the magnetocrystalline anisotropy of Al6Mn.

Copyright

Corresponding author

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

References

Hide All
1.Martienssen, W. and Warlimont, H.: Springer Handbook of Condensed Matter and Materials Data (Springer, Berlin-Heidelberg, New York, 2005), p. 180.
2.Mondolfo, L.F.: Aluminum Alloys: Structure and Properties (Butterworth, London, 1976), p. 324.
3.Bahadur, A.: Intermetallic phases in Al-Mn alloys. J. Mater. Sci. 23, 48 (1988).
4.Masahashi, N., Matsuo, M., and Watanabe, K.: Development of preferred orientation in annealing of Fe-3.25%Si in a high magnetic field. J. Mater. Res. 13, 457 (1998).
5.Yoshikawa, N., Endo, T., Taniguchi, S., Awaji, S., Watanabe, K., and Aoyagi, E.: Microstructure and orientation of iron crystals by thermal chemical vapor deposition with imposition of magnetic field. J. Mater. Res. 17, 2865 (2002).
6.Tong, W.P., Zhang, H., Sun, J., Zuo, L., He, J.C., and Lu, J.: Control of iron nitride formation by a high magnetic field. J. Mater. Res. 25, 2082 (2010).
7.Cheng, C.Q., Zhao, J., and Xu, Y.: Kinetics of intermetallic compound layers and Cu dissolution at Sn1.5Cu/Cu interface under high magnetic field. J. Mater. Res. 25, 359 (2010).
8.Vives, C.: Solidification of tin in the presence of electric and magnetic field. J. Cryst. Growth 76, 170 (1986).
9.Vives, C.: Effects of a magnetically forced convection during the crystallization in mould of aluminium alloys. J. Cryst. Growth 94, 739 (1989).
10.Liu, T., Wang, Q., Zhang, C., Gao, A., Li, D.G., and He, J.C.: Formation of chainlike structures in an Mn-89.7wt%Sb alloy during isothermal annealing process in the semisolid state in a high magnetic field. J. Mater. Res. 24, 2321 (2009).
11.Wang, Q., Gao, A., Liu, T., Liu, F., Zhang, C., and He, J.C.: Solidified microstructure evolution of Mn-Sb near-eutectic alloy under high magnetic field conditions. J. Mater. Res. 24, 2331 (2009).
12.Liu, T., Wang, Q., Gao, A., Zhang, H.W., Wang, K., and He, J.C.: Distribution of alloying elements and the corresponding structural evolution of Mn-Sb alloys in high magnetic field gradients. J. Mater. Res. 25, 1718 (2010).
13.Li, L., Zhang, Y.D., Esling, C., Jiang, H.X., Zhao, Z.H., Zuo, Y.B., and Cui, J.Z.: Influence of a high magnetic field on the precipitation behaviors of the primary Al3Fe phase during the solidification of hypereutectic Al-3.31wt% Fe alloy. J. Cryst. Growth 339, 61 (2012).
14.Li, X., Gagnoud, A., Ren, Z.M., Fautrelle, Y., and Moreaub, R.: Investigation of thermoelectric magnetic convection and its effect on solidification structure during directional solidification under a low axial magnetic field. Acta Mater. 57, 2180 (2009).
15.Li, X., Zhang, Y.D., Fautrelle, Y., Ren, Z.M., and Esling, C.: Experimental evidence for liquid/solid interface instability caused by the stress in the solid during directional solidification under a strong magnetic field. Scr. Mater. 60, 489 (2009).
16.Li, X., Ren, Z.M., Fautrelle, Y., Gagnoud, A., Zhang, Y.D., and Esling, C.: Degeneration of columnar dendrites during directional solidification under a high magnetic field. Scr. Mater. 60, 443 (2009).
17.Jin, F.W., Ren, Z.M., Ren, W.L., Deng, K., Zhong, Y.B., and Yu, J.B.: Effects of a high-gradient magnetic field on the migratory behavior of primary crystal silicon in hypereutectic Al-Si alloy. Sci. Technol. Adv. Mater. 9, 1 (2008).
18.Wang, 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).
19.Kang, H.J., Li, X.Z., Su, Y.Q., Liu, D.M., Guo, J.J., and Fu, H.Z.: 3-D morphology and growth mechanism of primary Al6Mn intermetallic compound in directionally solidified Al-3at.%Mn alloy. Intermetallics 23, 32 (2012).
20.Luo, D.W., Guo, J., Yan, Z.M., and Li, T.J.: Effect of high magnetic fields on the solidification microstructure of an Al-Mn alloy. Rare Met. 28, 302 (2009).
21.Zhang, Y.D., Esling, C., Zhao, X., and Zuo, L.: Indirect two-trace method to determine a faceted low-energy interface between two crystallographically correlated crystals. J. Appl. Cryst. 40, 436 (2006).
22.Assael, M.J., Kakosimos, K., Banish, R.M., Brillo, J., Egry, I., Brooks, R., Quested, P.N., Mills, K.C., Nagashima, A., Sato, Y., and Wakeham, W.A.: Reference data for the density and viscosity of liquid aluminum and liquid iron. J. Phys. Chem. Ref. Data 35, 285 (2006).
23.Prywer, J.: Correlation between growth of high-index faces, relative growth rates and crystallographic structure of crystal. Eur. Phys. J. B 25, 61 (2002).
24.Prywer, J.: Correlation between crystal structure, relative growth rates and evolution of crystal surfaces. Acta Phys. Pol. A 103, 85 (2003).
25.Inatomi, Y.: Buoyancy convection in cylindrical conducting melt with low Grashof number under uniform static magnetic field. Int. J. Heat Mass Transfer 49, 4821 (2006).
26.Kassemi, M., Barsi, S., Alexander, J.I.D., and Banish, M.: Contamination of microgravity liquid diffusivity measurements by void-generated thermocapillary convection. J. Cryst. Growth 276, 621 (2005).
27.Matthiesen, D.H., Wargo, M.J., Motakef, S., Carlson, D.J., Nakos, J.S., and Witt, A.F.: Dopant segregation during vertical Bridgman-Stockbarger growth with melt stabilization by strong axial magnetic fields. J. Crystal Growth 85, 557 (1987).
28.Berg, W.F.: Crystal growth from solutions. Proc. R. Soc. London, Ser. A 164, 79 (1938).
29.Van Dam, J.C. and Mischgofsky, F.H.: The application of a new, simple interference technique to the determination of growth concentration gradients of the layer perovskite NH3(CH2)3NH3CdCl4. J. Cryst. Growth 84, 539 (1987).
30.Wang, M., Peng, R.W., Bennema, P., and Ming, N.B.: Morphological instability of crystals grown from thin aqueous solution films with a free surface. Philos. Mag. A 71, 409 (1995).
31.Xiao, R.F., Alexander, J.I.D., and Rosenberger, F.: Growth morphology with anisotropic surface kinetics. J. Cryst. Growth 100, 313 (1990).
32.Flemings, M.C.: Solidification Processing (McGraw-Hill, New York, 1974), p. 322.
33.Asai, S., Sassa, K., and Tahashi, M.: Crystal orientation of non-magnetic materials by imposition of a high magnetic field. Sci. Technol. Adv. Mater. 4, 455 (2003).
34.Sugiyama, T., Tahashi, M., Sassa, K., and Asai, S.: The control of crystal orientation in non-magnetic metals by imposition of a high magnetic field. ISIJ. Int. 43, 855 (2003).

Keywords

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed