论文

纵向磁场对不同尺寸定向凝固高温合金DZ417G组织的影响

  • 玄伟东 ,
  • 任忠鸣 ,
  • 李传军 ,
  • 任维丽 ,
  • 陈超 ,
  • 于湛
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  • 上海大学上海市现代冶金与材料制备重点实验室, 上海 200072
玄伟东, 男, 1982年生, 博士生

收稿日期: 2011-09-29

  修回日期: 2012-04-06

  网络出版日期: 2012-05-11

基金资助

国家重点基础研究项目2011CB610404, 国家自然科学基金项目50911130365, 上海市科学技术委员会项目08dj1400404和08DZ1130100及中国博士后科学基金项目20110490712资助

EFFECT OF LONGITUDINAL MAGNETIC FIELD ON THE MICROSTRUCTURE OF DIRECTIONALLY SOLIDIFIED SUPERALLOY DZ417G WITH DIFFERENT SIZES

  • XUAN Wei-Dong ,
  • REN Zhong-Ming ,
  • LI Zhuan-Jun ,
  • REN Wei-Li ,
  • CHEN Tiao ,
  • YU Tan
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  • Shanghai Key Laboratory of Modern Metallurgy & Materials Processing,Shanghai University, Shanghai 200072

Received date: 2011-09-29

  Revised date: 2012-04-06

  Online published: 2012-05-11

Supported by

Projects of International Cooperation and Exchanges NSFC;National Basic Research Program of China;Shanghai Science and Technology Committee

摘要

进行了外加纵向静磁场下高温合金DZ417G的定向凝固实验, 考察了纵向磁场对不同尺寸试样凝固组织形貌的影响. 结果显示, 在温度梯度为70℃/cm, 抽拉速率为5 μm/s时, 施加磁场后一次枝晶间距减小, 并在试样边缘出现等轴晶组织; 随着试样尺寸的增大, 在试样边缘和中心的柱状枝晶组织遭到破坏, 形成等轴晶组织, 且出现“斑状”偏析. 这些现象可归结为磁场在固/液界面前沿合金熔体中诱发的热电磁对流(TEMC)所致.

本文引用格式

玄伟东 , 任忠鸣 , 李传军 , 任维丽 , 陈超 , 于湛 . 纵向磁场对不同尺寸定向凝固高温合金DZ417G组织的影响[J]. 金属学报, 2012 , 48(5) : 629 -635 . DOI: 10.3724/SP.J.1037.2011.00621

Abstract

In order to understand the influence of a longitudinal magnetic field on the microstructures of the superalloy DZ417G with different sample sizes, the superalloy DZ417G was directionally solidified under a longitudinal magnetic field. The solidification structures of the alloy with various dimensions of specimen have been investigated. The results showed that the columnar dendrites on the edge of samples were broken and changed into equiaxed dendrites in the magnetic field at the withdrawal velocity of 5 $\mu$m/s and temperature gradient of 70℃/cm. Additionally, it was found that equiaxed dendrites area expanded from the edge to the center of sample and the number of freckle-like macrosegregation increased with the size of sample. The columnar to equiaxed transition and freckle-like macrosegregation can be attributed to the thermoelectric magnetic convection (TEMC) induced by the magnetic field in the front of solid/liquid interface during directional solidification.

参考文献

[1] Utech H P, Flemings M C.  J Appl Phys, 1966; 37: 2021

[2] Chedzey H A, Hurle D T J.  Nature, 1966; 210: 933

[3] Matthiesen D H, Wargo M J, Motakef S.  J Cryst Growth, 1987; 85: 557

[4] Robertson G D, Conner D O.  J Cryst Growth, 1986; 76: 100

[5] Moreau R, Laskar O, Tanaka M.  Mater Sci Eng, 1993; A173: 93

[6] Lehmann P, Moreau R, Camel D.  Acta Mater, 1998; 46: 4067

[7] Alboussiere T, Moreau R, Camel D.  C R Acad Sci, 1991; 313: 749

[8] Zhang H W, Chen R Z.  Acta Metall Sin, 1997; 33: 370

    (张宏炜, 陈荣章. 金属学报, 1997; 33: 370)

[9] Trivedi R, Liu S, Mazumder P, Simsek E.  Sci Technol Adv Mater,2001; 2: 309

[10] Zheng Q, Hou G C, Sun X F, Jin T, Guan H R, Hu Z Q.  J Mater Eng,2002; 3: 24

     (郑启, 侯桂臣, 孙晓峰, 金涛, 管恒荣, 胡壮麒. 材料工程, 2002; 3: 24)

[11] Qu M, Liu L, Tang F T, Fu H Z.  Trans Nonferrous Met Soc China,2009; 19: 1

[12] Mukherji D, Rosler J, Kruger M, Heilmaier M, Bolitz M C,Volkl R, Glatzel U, Szentmiklosi L.  Scr Mater, 2012; 66: 60

[13] Liu L, Huang T W, Qu M, Liu G, Zhang J, Fu H Z.  J Mater ProcessTechnol, 2010; 210: 159

[14] Huang T W, Liu L, Zhang W G, Zhang J, Fu H Z.  Acta Metall Sin,2009; 45: 1225

     (黄太文, 刘林, 张卫国, 张军, 傅恒志. 金属学报, 2009, 45: 1225)

[15] Ren W L, Zhang T, Ren Z M, Zhao A K, Zhong Y B, Guo J T. Mater Lett, 2009; 63: 382

[16] Dong J W, Ren Z M, Ren W L, Li X, Li X.  Acta Metall Sin,2010; 46: 71

     (董建文, 任忠鸣, 任维丽, 李喜, 李旭. 金属学报, 2010; 46: 71)

[17] Li X, Gagnoud A, Ren Z M, Fautrelle Y, Moreau R. Acta Mater, 2009, 57: 2180

[18] Zimmermann G, Weiss A, Mbaya Z.  Mater Sci Eng, 2005; A413-414: 236

[19] Wang X D, Ciobanas A, Baltaretu F, Bianchi A M, Fautrelle Y. Mater Sci Forum, 2006; 508: 163

[20] Li X, Ren Z M, Wang J, Han Y F, Sun B D.  Mater Lett, 2012; 67: 205

[21] Li X, Ren Z M, Cao G H, Gagmoud A, Fautrelle Y.  Mater Lett,2011; 65: 3340

[22] Li X, Ren Z M, Fautrelle Y.  J Crys Growth, 2006; 290: 571

[23] Kishida Y, Takeda K, Miyoshino I, Taleuchi E.  ISIJ Int,1990; 30: 34

[24] Yasuda H, Yoshimoto T, Mizuguchi T, Tamura Y, Nagira T, Yoshiya M. ISIJ Int, 2007; 47: 612

[25] Ren Z M, Jin J Z.  J Mater Sci, 1992; 27: 4663

[26] Zhang T, Ren W L, Dong J W, Li X, Ren Z M, Cao G H, Zhong Y B,Deng K, Lei Z S, Guo J T.  J Alloys Compd, 2009; 487: 612

[27] Giamei A F, Kear B H.  Metall Trans, 1970; 1: 2185

[28] Li X, Fautrelle Y, Ren Z M.  Acta Mater, 2007; 55: 3803

[29] Steinbach S, Ratke L.  Mater Sci Eng, 2005; A413-414: 200

[30] Hui J, Tiwari R, WU X, Tewari S N, Trivedi R.  Metall Mater Trans,2002; 31A: 3499

[31] Steinbach S, Ratke L.  Metall Mater Trans, 2007; 38A: 1388

[32] Dupouy M D, Camel D, Favier J J.  Acta Metall Mater, 1992; 40: 1791

[33] Ren Z M, Jin J Z, Guo K R.  J Mater Sci, 1991; 26: 3599

[34] Jackson K A, Hunt J D, Uhlmann D R, Seward T P.  Trans TMS-AIME,1966; 236: 149

[35] Curreri P A, Lee J E, Stefanescu D M.  Metall Mater Trans,1988; 19A: 2671
 
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