Abstract
The solidification of Al-7wt.% Si alloys under the influence of electric current pulses (ECP) through two parallel electrodes at the melt surface is investigated. An effective grain refinement was found if the ECP is applied during the initial solidification period (nucleation and recalescence). The grain size can be gradually reduced, which is likely due to the remelting process of high-order dendrite arms in the mushy zone driven by solute fluctuation and promoted by thermal fluctuation. This fragmentation process is mainly driven by electromagnetically forced convection. The grain refinement does not require the formation of nuclei from a solidified shell near the electrodes, which would result in a grain rain inside the sample.
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References
Grässel O, KrĂ¼ger L, Frommeyer G, Meyer LW. Int J Plasticity 2000; 16:1391.
Miller WS, Zhuang L, Bottema J, Wittebrood AJ, De Smet P, Haszler A, et. al. Mater Sci Eng, 2000; 280:37.
Mordike BL, Ebert T. Mater Sci Eng A 2001; 302:37.
Williams JC, Starke Jr EA. Acta Mater 2003; 51:5775.
Murty BS, Kori SA, Chakraborty M. Int Mater Rev 2002; 47:3.
Seidman DN, Marquis EA, Dunand DC. Acta Mater 2002; 50:4021.
Gong J, Wilkinson AJ. Acta Mater 2011; 59:5970.
Maxwell I, Hellawell A. Acta metall 1975; 23:229.
Easton M, St John D. Metall Mater Trans A 1999; 30:1613 and 1625.
Greer AL, Bunn AM, Tronche A, Evans PV, Bristow DJ. Acta Mater 2000; 48:2823.
Easton MA, St John DH. Acta Mater 2001; 49:1867.
Qian M, Cao P, Easton MA, McDonald SD, St John DH. Acta Mater 2010; 58:3262.
Shu D, Sun BD, Mi J, Grant PS. Acta Mater 2011; 59:2135.
St John DH, Qian M, Easton MA, Cao P. Acta Mater 2011; 59:4907.
Abramov V, Abramov O, Bulgakov V, Sommer F. Mater Lett 1998; 37:27.
Jian X, Xu H, Meek TT, Han Q. Mater Lett 2005; 59:190
Jian X, Meek TT, Han Q. Scripta Mater 2006; 54:893.
Ramirez A, Ma Q, Davis B, Wilks T, St John DH. Scripta Mater 2008; 59:19.
Liu XB, Osawa Y, Takamori S, Mukai T. Mater Lett 2008; 62:2872.
Gao DM, Li ZJ, Han QY, Zhai QJ. Mater Sci Eng A 2009; 502:2.
Vives C. Mater Sci Eng A 1993; 173:169.
Vives C. Metall Mater Trans B 1996; 27:445 and 457.
Li MJ, Tamura T, Miwa K. Acta Mater 2007; 55:4635.
Griffiths WD, McCartney DG. Mater Sci Eng A 1996; 216:47.
Willers B, Eckert S, Michel U, Haase I, Zouhar G. Mater Sci Eng A 2005; 402:55.
Eckert S, Willers B, Nikrityuk PA, Eckert K, Michel U, Zouhar G. Mater Sci Eng A 2005; 413–414:211.
Eckert S, Nikrityuk PA, Räbiger D, Eckert K, Gerbeth G. Metall Mater Trans B 2007; 38:977.
Willers B, Eckert S, Nikrityuk PA, Räbiger D, Dong J, Eckert K, Gerbeth G. Metall Mater Trans B 2008; 39:304.
Metan V, Eigenfeld K, Räbiger D, Eckert S. J Alloy Compnds 2009; 487:163.
Vashchenko KI, Chernega D, Vorob’ev S, Lysenko N, Yakovchuk YU. Metallovedeni Thermich Obra Metallov 1974; 3:62.
Conrad H. Mater Sci Eng A, 2000; 287:205.
Misra AK. Metall Trans A 1985; 16A:1354.
Misra AK. Metall Trans A 1986; 17A:358.
Nakada M, Shiohara Y, Flemings MC. ISIJ Int 1990; 30:27.
Barnak JP, Sprecher AF, Conrad H. Scr Metall Mater 1995; 32:879.
Liao XL, Zhai QJ, Luo J, Chen WJ, Gong YY. Acta Mater 2007; 55: 3103.
Li J, Ma JH, Gao YL, Zhai QJ. Mater Sci Eng A 2008; 490:452.
Ma JH, Li J, Gao YL, Zhai QJ. Mater Lett 2009; 63:142.
Cui H, Zong YB, Cang DQ, Li LZ, Zhang J. J Univ Sci Technol Beijing 2007; 14:317.
Zhao ZL, Wang JL, Liu L. Mater Manuf Process, 2011; 26:249.
Yin ZX, Liang D, Chen YE, Cheng YF, Zhai QJ. T Nonferr Metal Soc 2013; 23:92.
He SX, Wang J, Jiang W, Sun BD, Zhou YH. T Nonferr Metal Soc 2003; 13:126.
Ban CY, Han Y, Ba QX, Cui JZ. Mater Sci Forum 2007; 546–549:723.
Gao M, He GH, Yang F, Guo JD, Yuan ZX, Zhou BL. Mater Sci Eng A 2002; 337:110.
Räbiger D, Zhang YH, Galindo V, Franke S, Willers B, Eckert S. Acta Mater 2014; 79:327.
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Zhang, Y.H., Räbiger, D., Eckert, S. (2015). Melt Flow and Grain Refinement in Al-Si Alloys Solidified under the Influence of Applied Electric Currents. In: TMS 2015 144th Annual Meeting & Exhibition. Springer, Cham. https://doi.org/10.1007/978-3-319-48127-2_5
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DOI: https://doi.org/10.1007/978-3-319-48127-2_5
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-48608-6
Online ISBN: 978-3-319-48127-2
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