Hostname: page-component-8448b6f56d-dnltx Total loading time: 0 Render date: 2024-04-24T05:44:15.227Z Has data issue: false hasContentIssue false
  • English
  • Français

Effect of a high axial magnetic field on the structure of directionally solidified Al–Si alloys

Published online by Cambridge University Press:  17 March 2015

Dafan Du ,
Zhenyuan Lu ,
Annie Gagnoud ,
Yves Fautrelle ,
Zhongming Ren ,
Xionggang Lu ,
Rene Moreau  and
Xi Li
Dafan Du
Affiliation:
Department of Material Science and Engineering, Shanghai University, Shanghai 200072, People's Republic of China
Zhenyuan Lu
Affiliation:
Department of Material Science and Engineering, Shanghai University, Shanghai 200072, People's Republic of China
Annie Gagnoud
Affiliation:
SIMAP-EPM-Madylam/G-INP/CNRS, PHELMA, St Martin d’Heres Cedex 38402, France
Yves Fautrelle
Affiliation:
SIMAP-EPM-Madylam/G-INP/CNRS, PHELMA, St Martin d’Heres Cedex 38402, France
Zhongming Ren
Affiliation:
Department of Material Science and Engineering, Shanghai University, Shanghai 200072, People's Republic of China
Xionggang Lu
Affiliation:
Department of Material Science and Engineering, Shanghai University, Shanghai 200072, People's Republic of China
Rene Moreau
Affiliation:
SIMAP-EPM-Madylam/G-INP/CNRS, PHELMA, St Martin d’Heres Cedex 38402, France
Xi Li*
Affiliation:
Department of Material Science and Engineering, Shanghai University, Shanghai 200072, People's Republic of China; and SIMAP-EPM-Madylam/G-INP/CNRS, PHELMA, St Martin d’Heres Cedex 38402, France
*
a)Address all correspondence to this author. email: lx_net@sina.com
Get access

Abstract

The effects of an axial high magnetic field on the growth of the α-Al dendrites and the alignment of the iron-intermetallics (β-AlSiFe phases) in directionally solidified Al–7 wt% Si and Al–7 wt% Si–1 wt% Fe alloys were investigated experimentally. The results showed that the application of a high magnetic field changed the α-Al dendrite morphology significantly. Indeed, a high magnetic field caused the deformation of the α-Al dendrites and induced the occurrence of the columnar-to-equiaxed transition (CET). It was also found that a high magnetic field was capable of aligning the β-AlSiFe phases with the <001>-crystal direction along the solidification direction. Further, the Seebeck thermoelectric signal at the liquid/solid interface in the Al–7 wt% Si alloys was measured in situ and the results indicated that the value of the Seebeck signal was of the order of 10 µV. The modification of the α-Al dendrite morphology under the magnetic field should be attributed to the thermoelectric magnetic force acting on the α-Al dendrites. The magnetization force may be responsible for the alignment of the β-AlSiFe phases under the magnetic field.

Keywords

Al–Si alloyshigh magnetic fielddirectional solidificationsolidification structure
Type
Articles
Information
Journal of Materials Research , Volume 30 , Issue 8 , 28 April 2015 , pp. 1043 - 1055
Copyright
Copyright © Materials Research Society 2015 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Rooy, E.L.: Metals Handbook (ASM International, Materials Park, Ohio, 1988).Google Scholar
Hassan, S.B. and Aigbodion, V.S.: The effect of thermal ageing on microstructure and mechanical properties of Al-Si-Fe/Mg alloys. J. Alloys Compd. 486, 309 (2009).CrossRefGoogle Scholar
Nafisi, S., Emadi, D., Shehata, M.T., and Ghomashchi, R.: Effects of electromagnetic stirring and superheat on the microstructural characteristics of Al-Si-Fe alloy. Mater. Sci. Eng., A 432, 71 (2006).Google Scholar
Joseph, S. and Kumar, S.: A systematic investigation of fracture mechanisms in Al-Si based eutectic alloy-effect of Si modification. Mater. Sci. Eng., A 588, 111 (2013).Google Scholar
Cepeda-Jiménez, C.M., Orozco-Caballero, A., García-Infanta, J.M., Zhilyaev, A.P., Ruano, O.A., and Carreño, F.: Assessment of homogeneity of the shear-strain pattern in Al-7wt%Si casting alloy processed by high-pressure torsion. Mater. Sci. Eng., A 597, 102 (2014).CrossRefGoogle Scholar
Crepau, P.N.: Effect of iron in Al-Si casting alloys: A critical review. AFS Trans. 103, 361 (1995).Google Scholar
Mbuya, T.O., Odera, B.O., and Ng’ang’a, S.P.: Influence of iron on castability and properties of aluminium silicon alloys: Literature review. Int. J. Cast Met. Res. 16, 451 (2003).Google Scholar
Liu, L., Mohamed, A.M.A., Samuel, A.M., Samuel, F.H., Doty, H.W., and Valtierra, S.: Precipitation of β-Al5FeSi phase platelets in Al-Si based casting alloys. Metall Mater. Trans. A 40A, 2457 (2009).CrossRefGoogle Scholar
Gorny, A., Manickaraj, J., Cai, Z.H., and Shankar, S.: Evolution of Fe based intermetallic phases in Al-Si hypoeutectic casting alloys: Influence of the Si and Fe concentrations, and solidification rate. J. Alloys Compd. 577, 103 (2013).CrossRefGoogle Scholar
Sun, Z.H.I., Guo, M., Vleugels, J., Van der Biest, O., and Blanpain, B.: Strong static magnetic field processing of metallic materials: A review. Curr. Opin. Solid State Mater. Sci. 16, 254 (2012).Google Scholar
Hou, T.P. and Wu, K.M.: Alloy carbide precipitation in tempered 2.25 Cr-Mo steel under high magnetic field. Acta Mater. 61, 2016 (2013).CrossRefGoogle Scholar
Peng, J., Liu, J.M., Wang, E.G., and Han, K.: The effects of high magnetic field on crystallization of Fe71(Nb0.8Zr0.2)6B23 bulk metallic glass. J. Alloys Compd. 581, 373 (2013).Google Scholar
Liu, K.M., Lu, D.P., Zhou, H.T., Chen, Z.B., Atrens, A., and Lua, L.: Influence of a high magnetic field on the microstructure and properties of a Cu-Fe-Ag in situ composite. Mater. Sci. Eng., A 584, 114 (2013).Google Scholar
Li, L., Zhao, Z.H., Zuo, Y.B., Zhu, Q.F., and Cui, J.Z.: Effect of a high magnetic field on the morphological and crystallographic features of primary Al6Mn phase formed during solidification process. J. Mater. Res. 28, 1567 (2013).Google Scholar
Molodov, D.A., Günster, C., and Gottstein, G.: Grain boundary motion and grain growth in zinc in a high magnetic field. J. Mater. Sci. 49, 3875 (2014).CrossRefGoogle Scholar
Li, X., Ren, Z.M., Shen, Y., and Fautrelle, Y.: Effect of thermoelectric magnetic force on the array of dendrites during directional solidification of Al-Cu alloys in a high magnetic field. Philos. Mag. Lett. 92(12), 675 (2012).Google Scholar
Li, X., Fautrelle, Y., and Ren, Z.M.: Morphological instability of cell and dendrite during directional solidification under a high magnetic field. Acta Mater. 56, 3146 (2008).Google Scholar
Matheson, D.H., Wargo, M.S., Motakef, D., Carlson, J., and Nakos, A.: Dopant segregation during vertical Bridgman-Stockbarger growth with melt stabilization by strong axial magnetic fields. J. Cryst. Growth 85, 557 (1987).CrossRefGoogle Scholar
Robertson, G.D. and O’Connor, D.: Magnetic field effects on float-zone Si crystal growth: II. Strong transverse fields. J. Cryst. Growth 76, 100 (1986).Google Scholar
Utech, H.P. and Flemings, M.C.: Elimination of solute banding in indium antimonide crystal by growth in a magnetic field. J. Appl. Phys. 37, 2021 (1966).Google Scholar
Shercliff, J.J.: Thermoelectric magnetohydrodynamics. J. Fluid Mech. 91, 231 (1979).Google Scholar
Lehmann, P., Moreau, R., Camel, D., and Bolcato, R.: Modification of interdendritic convection in directional solidification by a uniform magnetic field. Acta Mater. 46, 4067 (1998).Google Scholar
Favier, J.J., Garandet, J.P., Rouzaud, A., and Camel, D.: Mass transport phenomena during solidification in microgravity; preliminary results of the first mephisto flight experiment. J. Cryst. Growth 140, 237 (1996).Google Scholar
Sen, S., Dhindaw, B.K., Curreri, P.A., Peters, P., and Kaukler, W.F.: Measurement of interfacial undercooling in a dilute Pb-Sn alloy near the regime of morphological instability. J. Cryst. Growth 193, 692 (1998).Google Scholar
Pilling, J. and Hellawell, A.: Mechanical deformation of dendrites by fluid flow. Metall. Mater. Trans. A 27, 229 (1996).CrossRefGoogle Scholar
Billia, B., Bergeon, N., Ngyuen Thi, H., Jamgotchian, H., Gastaldi, J., and Grange, G.: Cumulative mechanical moments and microstructure deformation induced by growth shape in columnar solidification. Phys. Rev. Lett. 93, 126105 (2004).Google Scholar
Morikawa, 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
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).Google Scholar