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Acta Metall Sin    DOI: 10.3724/SP.J.1037.2013.00509
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JIA Peng, WANG Engang, LU Hui, HE Jicheng
Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang 110819
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Inconel 625 is a Ni—Cr—Mo—Nb alloy which was developed primarily for high turbine applications. The elemental addition of Nb increases the solidification temperature range, which exhibits a strong propensity to form interdendritic segregation. The enrichment of elements Nb and Mo at the terminal stage of solidification leads to the formation of brittle eutectic structure, i.e., γ+Laves phases, which becomes potential crack origin during the subsequent hot processing and application. The present work has demonstrated that, the introduction of electromagnetic field (EMF) to the solidification process of Inconel 625 alloy has the obvious effect on grain refinement. The EMF can also effectively influence the segregation ratio of Nb and Mo. However, the inappropriate application of electric current intensity and frequency will lead to more severe segregation of elements Nb and Mo, which causes the increment of eutectic structure volume fraction. Further analysis illustrates that both of the grain refinement and eutectic volume fraction control the tensile property at room temperature, increasing the yield strength and decreasing the tensile plasticity for Inconel 625 alloy. It has been proven that a proper selection of input current intensity (100 A) and frequency (8 Hz) can effectively dominate the segregation behavior during solidification process under EMF with more than 30% increase of yield strength and a minute loss of plasticity.

Key words:  electromagnetic field      Inconel 625 superalloy      solidification microstructure      interdendritic segregation      tensile property     
Received:  25 August 2013     

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[1] Barker J F, Cox J D, Margolin E.  Met Prog, 1968; 93: 91

[2] Eiselstein H L, Tillack D J. In: Loria E A ed.,Superalloys 718,625, and Various Derivatives, Warrendale, PA: The Minerals, Metals & Materials Society, 1991: 1
[3] Yang W H, Chen W, Chang K M. In: Pollock T M ed.,  Superalloys 2000, Nashville: The Minerals,Metals & Materials Society, 2000: 75
[4] Cieslak M J, Headley T J, Kollie T, Romig A D.  Metall Mater Trans, 1988; 19A: 2319
[5] Dupont J N.  Metall Mater Trans, 1996; 27A: 3612
[6] Dong J X, Zhang M C, Zeng Y P, Xie X S.  Acta Metall Sin (Engl Lett), 2005; 18: 47
[7] Guo J T.  Materials Science and Engineering for Superalloys (Volume 2). Beijing: Science Press, 2008: 1
(郭建亭. 高温合金材料学(中册). 北京: 科学出版社, 2008: 1)
[8] Flemings M C.  Solidification Processing. New York: McGraw—Hill, 1974: 38
[9] Flemings M C.  ISIJ Int, 2000; 40: 833
[10] Xu F J, Lv Y H, Liu Y X, Shu F Y, He P, Xu B S.  J Mater Sci Technol, 2013; 29: 480
[11] Moffatt H K.  Phys Fluids, 1991; 3A: 1336
[12] Metana V, Eigenfelda K, R$\ddot{\rm a$bigerb D, Leonhardtb M, Eckertb S.J Alloys Compd, 2009; 487: 163
[13] Wang X D, Li T J, Jin J Z.  Acta Metall Sin, 2001; 37: 971
(王晓东, 李廷举, 金俊泽. 金属学报, 2001; 37: 971)
[14] Jin W Z, Li J, Li T J, Yin G M.  J Vac Sci Technol Sin, 2008; (6): 28
(金文中, 李军, 李廷举, 殷国茂. 真空科学与技术学报, 2008; (6): 28)
[15] Chang K M, Lai H J, Hwang J Y. In: Loria E A ed., Superalloys 718,625, and Various Derivatives, Nashville: The Minerals,Metals & Materials Society, 1994: 683
[16] Schneider M C, Gu J P, Beckermann C, Boettinger W J, Kattner U R.Metall Mater Trans, 1997; 28A: 1517
[17] Cieslak M J, Knorovsky G A, Headley T J, Romig A D. In: Loria E A ed.,Superalloys 718, Nashville: The Minerals, Metals $\&$ Materials Society, 1989: 59
[18] Garabedian H, Strick—Constable R F J.  J Cryst Growth, 1974; 22: 188
[19] Xin X, Huang A H, Qi F, Zhang W H, Liu F, Yang H C, Sun W R, Hu Z Q.Acta Metall Sin, 2010; 46: 873
(信昕, 黄爱华, 祁峰, 张伟红, 刘芳, 杨洪才, 孙文儒, 胡壮麒. 金属学报,2010; 46: 873)
[20] Guo D Y, Yang Y S, Tong W H, Hua F A, Cheng G F, Hu Z Q.  Acta Metall Sin, 2003; 39: 914
(郭大勇, 杨院生, 童文辉, 花福安, 程根发, 胡壮麒. 金属学报, 2003; 39: 914)
[21] Xiong Y H, Li P J, Yang A M, Yan W D, Zeng D B, Liu L.  Acta Metall Sin, 2002, 38: 534
(熊玉华, 李培杰, 杨爱民, 严卫东, 曾大本, 刘林. 金属学报, 2002; 38: 534)
[22] Epishin A, Link T, Bruckner U, Fedelich B, Portella P. In: Green K A ed.,Superalloys 718, Nashville: The Minerals, Metals & Materials Society, 2004: 537
[23] Nader E B, Yamamoto K, Miyahara H, Keisaku O.  Mater Trans, 2005; 46: 909
[24] Chen W.  PhD Dissertation, West Virginia University, 2006

[25] Kaddah N E, Natarajan T T. In: Cleary P W ed.,Second International Conference on CFD in the Minerals and Process Industries, Melbourne: CSIRO, 1999: 339

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