DOI: 10.3724/SP.J.1037.2013.00213

Acta Metallurgica Sinica (金属学报) 2013/49:12 PP.1508-1520


The rapid development of advanced aero-engine and industry gas turbine requires high performance of single crystal (SX) blade. Spiral selector is very important to produce SX blade, which includes starter block and spiral part. Tn this research, grain density changing and orientation deviating as the height of grain growth (the distance between section studied and the undersurface of the sample) increasing were studied妙the experiment and simulation, and the designing rules for the starter block were given out. EBSD orientation mapping technology was used to get grains' morphology and orientation. Mathematical and p师sical models were built for the directional solidification process. Adopting CA-FD method, the 3D macro temperature field of solidification process was calculated as well as grain growth. The properties of grains competitive growth and evolution process during directional solidification in starter block were analyzed based on macro and micro modeling results, and rules for grains competitive growth was explained, which provided theoretical supports for designing starter block.

Key words:spiral grain selector,starter block,numerical simulation,grain orientation,grain density

ReleaseDate:2015-03-06 17:46:59

[l6] Epishin A I, Nolze G. Cryst Rep, 2006:51:710.

[1] Reed R C. The Supenalloys h'undanaentals aced Applicalions. UK:Cambridge University Press, 2006:121

[2] Shi C X, Zhong Z Y. Acta Metall Sin, 2010:46:1281(师昌绪,仲增墉金属学报,2010:46:1281)

[3] H Z, Guo J J, Liu L, Li J S. Directional Solidification and Processing of Advanced Materials. Beijing:Science Press, 2008:525(傅恒志,郭景杰,刘林,李金山.先进材料定向凝固.北京:科学出版社,2008:525)

[4] Li J R, Xiong J C, Tang D Z. Advanced High Ternpern,t.二 Structural Materials and Technology. Beijing:National Defense Industry Press, 2012:100(李嘉荣,熊继春,唐定中.先进材料高温结构材料与技术.北京:国防工业出版社,2012:100)

[5] Gandin C A, Rappaz M. Acta Metall Mater, 1994:42:2233.

[6] Rappaz M, Gandin C A. Acta Metall Mater, 1993:41:345.

[7] Yang X L, Lee P D, D'Souza N. JOM,2005:57(5):40.

[8] Gandin C A, Rappaz M. Acta Mater, 1997:45:2187.

[9] Jin H, Li J, Pan D. Acta Metall Sin (Engl Lett),2009:22:429.

[10] Pan D, Xu Q Y, Liu B C. Sci China (Engl Lett), 2011:54G:851

[11] Zhang H, Xu CZ Y, Tang N, Pan D, Liu B C. Sci China(Engl Lett), 2011:54E:3191

[12] Liu W W. Ra}ne Met, 2011:30:396

[13] Yang X L, Nesa D, Lee P D, D'Souza N. Mater Sci Eng,2005:A413:571

[14] D'Souza N, Ardakani M G, McLean M, Shollock B A. Metall Mater Tnans, 2000:31A:2877.

[15] Carter P, Cox D C, Gandin C A, Reed R C. Mater Sci Eng, 2000:A280:233.

[17] Pan D, Xu Q Y, Liu B C, Li J R, Yuan H L, Jin H P.JOM, 2010:62(5):30.

[18] Pan D. PhD Dissertation, Tsinghua University, Beijing,2010(播冬·清华大学博士学位论文,北京,2010)

[19] Seo S M, Kim I S, Lee J H, Jo C Y, Miyahara H, Ogi K.Met Mnter Int, 2009:15:391.

[20] Zhou Y Z, Volek A, Green N R. Acta Mnter, 2008:56:2631

[21] Zhou Y Z, Jin T, Sun X F. Acta Metall Sin, 2010:11:1327(周亦宵,金涛,孙晓峰.金属学报,2010:46:1327)

[22] Walton D, Chalmers B. Traps Am. Inst Min Metall Eng,1959:215:447

[23] Jiang L, Li S, Han Y. Proc Eng, 2012:27:1135.

[24] Meng X, Lu Q, Li J, Jin T, Sun X, Zhang J, Chen Z, Wang Y, Hu Z. J Mater Sci Technol, 2012:28:214.

[25] Liu Z Y, Lin M, Yu D, Zhou X W, Gu Y X, Fu H Z. Metall Mater Traps A, DOI:10.1007/S11661-013-1840-0

[26] Yu J. PhD Dissertation, Tsinghua University, Beijing,2007(于靖.清华大学博士学位论文,北京,2007)

[27] Liang Z J. PhD Dissertation, Tsinghua University, Beijing, 2003(梁作俭.清华大学博士学位论文,北京,2003)

[28] Li J R, Zhong Z G, Tang D Z, Liu S Z, Wei P, Wei P Y, Wu Z T, Huang D. In:Pollock T M, Kissinger R D,Bowman R R, Green K A, McLean M, Oison S, Schirra J J, eds., Superalloys 2000, Warrendale, PA:TMS, 2000:777

[29] Editorial Committee. Practical Handbook of Engineering Materials. 2nd Ed., Beijing:China Standards Press, 2002:771(丛书编委会.工程材料实用手册.第2版,北京:中国标准出版社,2002:771)

[30] Jin H P, Li J R, Liu S Z. In:Chandra T, Wanderka N,Reimers W, Ionescu M, eds., 6th Int Co可on Processing and Manufacturing of Advanced Materials, Berlin, Germany:Traps Tech Publications Ltd., 2010:2251

[31] Pan D,XuQY,YuJ,LiuBC,LiJR,YuanHL,JinH P. Int J Cast Metal Res, 2008:21:308.

[32] Liu S Z, Li J R, Tang D Z, Zhong Z G. J Mater Eng, 1999:(7):40(刘世忠,李嘉荣,唐定忠,钟振纲,材料工程,1999:(7):40)