镍基单晶高温合金DD3制备过程中晶粒演化和 选晶行为的EBSD研究

高斯峰; 刘林; 王柠; 赵新宝; 张军; 傅恒志

doi:10.3724/SP.J.1037.2011.00144

金属学报 >

2011 , Vol. 47 >Issue 10: 1251 - 1256

DOI: https://doi.org/10.3724/SP.J.1037.2011.00144

论文

镍基单晶高温合金DD3制备过程中晶粒演化和选晶行为的EBSD研究

高斯峰 ,
刘林 ,
王柠 ,
赵新宝 ,
张军 ,
傅恒志

展开

西北工业大学凝固技术国家重点实验室, 西安 710072

高斯峰, 男, 1983年生, 博士生

收稿日期: 2011-03-18

修回日期: 2011-05-04

网络出版日期: 2011-10-11

基金资助

国家重点基础研究发展计划项目2010CB631202和2011CB610406, 国家自然科学基金项目50827102和50931004及凝固技术国家重点实验室(西北工业大学)博士后基金项目09-BZ-2010资助

收起

EBSD STUDIES OF GRAIN EVOLUTION AND GRAIN SELECTION BEHAVIOR DURING THE PREPARATION OF Ni–BASED SINGLE CRYSTAL SUPERALLOY DD3

GAO Shi-Feng ,
LIU Lin ,
YU Ning ,
DIAO Xin-Bao ,
ZHANG Jun ,
FU Heng-Zhi

Expand

State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072

Received date: 2011-03-18

Revised date: 2011-05-04

Online published: 2011-10-11

Supported by

Supported by National Basic Research Program of China (Nos.2010CB631202 and 2011CB610406), National Natural Science Foundation of China (Nos.50827102 and 50931004) and the Research Fund of the State Key Laboratory of Solidification Processing (NWPU) (No.09–BZ–2010)

Fold

摘要

采用选晶法在改进的Bridgman定向凝固炉上进行镍基单晶高温合金DD3定向凝固实验,研究了选晶法制备镍基单晶高温合金过程中晶粒组织演化和螺旋选晶行为, 采用电子背散射衍射(EBSD)技术对晶粒的竞争过程进行分析. 结果表明,选晶器引晶段的主要作用是优化晶粒取向, 获得取向良好的<001>定向凝固组织. 在距激冷板36.1 mm处, 90%的<001>取向晶粒与轴向偏离小于10°, 只有很少的晶粒取向与轴向偏离大于12°. 螺旋选晶段的主要作用是确保只有一个晶粒进入型腔, 在选晶段沿螺旋方向攀旋一周时就可获得单晶组织. 选晶过程中, 远离选晶器螺旋通道内侧的晶粒由于受到螺旋通道较强的几何约束, 进而被靠近螺旋通道内侧的晶粒所淘汰. 螺旋选晶器的狭窄通道对枝晶生长的阻碍作用是实现螺旋选晶的主要原因.

关键词： 镍基单晶高温合金; 螺旋选晶器; 定向凝固; 晶粒选择

本文引用格式

高斯峰 , 刘林 , 王柠 , 赵新宝 , 张军 , 傅恒志 . 镍基单晶高温合金DD3制备过程中晶粒演化和选晶行为的EBSD研究[J]. 金属学报, 2011 , 47(10) : 1251 -1256 . DOI: 10.3724/SP.J.1037.2011.00144

Abstract

Ni–based single–crystal superalloy DD3 was prepared by using the modified Bridgman apparatus with spiral grain selector. Grain structure evolution and grain selection in spiral selector have been investigated. Electron back scattered diffraction (EBSD) technique was used to characterize the grain texture evolution. The main function of starter block is to optimize the grain orientations. At the height of 36.1 mm from the copper chill plate, the misorientations of nearly 90% grains are less than 10?, and few grains’ orientations deviate from solidification direction more than 12?. Finally, only one grain is allowed to grow into the cast by grain selcting with one pitch in spiral part. Moreover, due to the geometric constraint of spiral selector, the grains near the outer wall are gradually overgrown by the grains close to the inner wall of spiral passage. The grain selection in the spiral selector can be mainly attributed to the geometric constraint of narrow passage.

Key words： Ni–based single crystal superalloy; spiral shape grain selector; directional solidification; grain selection

参考文献

[1] Fu H Z. J Aeronaut Mater, 1998; 18(4): 52

(傅恒志. 航空材料学报, 1998; 18(4): 52)

[2] Gell M, Duhl D N, Giamei A F. In: Tien J K, Wlodek S T, Morrow III H, Gell M, Maurer G E eds., Superalloys 1980, Pennsylvania, Metals Park, OH: American Society for Metals, 1980: 205

[3] Ross E W, O’Hara K S. In: Kissinger R D, Deye D J, Anton D L, Cetel A D, Nathal M V, Pollwk T M,Woodford D A eds., Superalloys 1996, Pennsylvania, Warrendale, PA: TMS, 1996: 19

[4] Kear B H, Piearcey B J. Trans Metall Soc AIME, 1967; 239: 1209

[5] Li J R, Zhao J Q, Liu S Z, Han M. In: Reed R C, Green K A, Caron P, Gabb T P, Fahrmann M G, Huron E S, Woodard S R eds., Superalloys 2008, Pennsylvania, Warrendale, PA: TMS, 2008: 443

[6] Higginbotham G J S. Mater Technol, 1986; 2: 442

[7] Goulette M J, Spiling P D, Arthey R P. In: Gell M, Kortovich C S, Bricknell R H, Kent W B, Radavich J F eds., Superalloy 1984, New York, Warrendale, PA: TMS, 1984: 167

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

[9] Esaka H, Shinozuka K, Tamura M. Mater Sci Eng, 2005; A413–414: 151

[10] Dai H J, Gebelin J C, D’Souza N, Brown P D, Dong H B. Int J Cast Met Res, 2009; 22(1—4): 54

[11] Dai H J, Gebelin J C, Newell M, Reed R C, D’Souza N, Brown P D, Dong H B. In: Reed R C, Green K A, Caron P, Gabb T P, Fahrmann M G, Huron E S, Woodard S R eds., Superalloys 2008, Pennsylvania, Warrendale, PA: TMS, 2008: 367

[12] Zheng Q, Hou G C, Tian W M, Jin T, Sun X F, Guan H R, Hu Z Q. Trans Nonferrous Met Soc China, 2001; 11: 176

(郑启, 侯桂臣, 田为民, 金涛, 孙晓峰, 管恒荣, 胡壮麒. 中国有色金属学报, 2001; 11: 176)

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

[14] Ardakani M G, D’Souza N, Shollock B A, McLean M. Metall Mater Trans, 2000; 31A: 2887

[15] D’Souza N, Ardakani M G, McLean M, Shollock B A. Metall Mater Trans, 2000; 31A: 2877

[16] Gandin C A, Rappaz M, West D, Adams B L. Metall Mater Trans, 1995; 26A: 1543

[17] Walton D, Chalmers B. Trans Metall Soc AIME, 1959; 215: 447

[18] Zhou Y Z, Green N R. In: Reed R C, Green K A, Caron P, Gabb T P, Fahrmann M G, Huron E S, Woodard S R eds., Superalloys 2008, Pennsylvania, Warrendale, PA: TMS, 2008: 367

[19] Rappaz M, Gandin C A, Desbiolles J L, Thevoz P. Metall Mater Trans, 1996; 27A: 695

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

[21] Zhou Y Z, Jin T, Sun X F. Acta Metall Sin, 2010; 46: 1327

(周亦胄, 金涛, 孙晓峰. 金属学报, 2010; 46: 1327)

[22] Zhao X B. PhD Thesis, Northwestern Polytechnical University, Xi’an, 2010

(赵新宝. 西北工业大学博士学位论文, 西安, 2010)

Options

文章导航

模态框（Modal）标题

摘要

本文引用格式

Abstract

参考文献