Please wait a minute...
 
材料工程  2014, Vol. 0 Issue (8): 8-14    DOI: 10.11868/j.issn.1001-4381.2014.08.002
  材料与工艺 本期目录 | 过刊浏览 | 高级检索 |
激光立体成形GH4169高温合金γ"相的高温粗化行为
明宪良, 陈静, 谭华, 杨海欧, 林鑫
西北工业大学 凝固技术国家重点实验室, 西安 710072
Coarsening Behavior of γ" Precipitates in GH4169 Superalloy Fabricated by Laser Solid Forming
MING Xian-liang, CHEN Jing, TAN Hua, YANG Hai-ou, LIN Xin
State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China
全文: PDF(2247 KB)   HTML()
输出: BibTeX | EndNote (RIS)      
摘要 采用激光立体成形技术制备GH4169高温合金块体,对其在720~780℃温度区间进行不同保温时间的双级时效处理,采用微观测试分析方法对高温短时时效处理后γ"相的形态、尺寸变化及粗化动力学行为进行研究。结果表明:激光立体成形GH4169合金在不同保温时间双级时效条件下,γ"相形态基本为圆盘形;和保温时间相比,时效温度对γ"相的影响更为显著;γ"相的粗化规律符合Lifshitz-Slyozov-Wagner(LSW)理论,计算获得γ"的粗化激活能Q=281.85kJ/mol,较锻造GH4169合金的γ"粗化激活能略高,表明激光立体成形GH4169合金的组织稳定性优于锻态。
服务
把本文推荐给朋友
加入引用管理器
E-mail Alert
RSS
作者相关文章
明宪良
陈静
谭华
杨海欧
林鑫
关键词 激光立体成形GH4169高温合金γ"相粗化行为热稳定组织    
Abstract:The bulk of GH4169 superalloy was fabricated by laser solid forming (LSF). The bulk sample was treated with two-step aging treatment at 720-780℃ for different holding times. The morphology, size and coarsening kinetics of γ" precipitates of LSFed GH4169 superalloy were studied by microscopic measurements. The results show that the γ" precipitates evolve gradually to be disc-shaped in morphology during two-step aging treatment with different holding time. Compared with the holding time, the aging temperature has more significant effect on the γ" precipitates. Meanwhile, the coarsening behavior of the γ" precipitates obeys the Lifshitz-Slyozov-Wagner(LSW) theory. The diffusion activation energy Q in coarsening of γ" precipitates precipitated in the LSFed GH4169 superalloy is 281.85kJ/mol. It is slightly higher than that of the forged GH4169 superalloy, which indicates that the structural stability of LSFed GH4169 superalloy is better than that of the forged one.
Key wordslaser solid forming    GH4169 superalloy    γ"    precipitate    coarsening behavior    thermal stability of structure
收稿日期: 2014-06-04     
1:  TG146.4  
基金资助:国家自然科学基金资助项目(51105311);西北工业大学基础研究基金资助项目(NPU-FFR-JC201234)
通讯作者: 陈静(1970-),女,教授,主要研究方向为金属结构件的激光增材制造,联系地址:陕西省西安市碑林区西北工业大学凝固技术国家重点实验室(710072),E-mail:phd2003cjj@nwpu.edu.cn     E-mail: phd2003cjj@nwpu.edu.cn
引用本文:   
明宪良, 陈静, 谭华, 杨海欧, 林鑫. 激光立体成形GH4169高温合金γ"相的高温粗化行为[J]. 材料工程, 2014, 0(8): 8-14.
MING Xian-liang, CHEN Jing, TAN Hua, YANG Hai-ou, LIN Xin. Coarsening Behavior of γ" Precipitates in GH4169 Superalloy Fabricated by Laser Solid Forming. Journal of Materials Engineering, 2014, 0(8): 8-14.
链接本文:  
http://jme.biam.ac.cn/jme/CN/10.11868/j.issn.1001-4381.2014.08.002      或      http://jme.biam.ac.cn/jme/CN/Y2014/V0/I8/8
[1] LI M Q, JU W B, LIN Y Y, et al. Deformation behavior of GH4169 nickel based superalloy in isothermal compression[J]. Material Science and Technology,2008,24(10):1195-1198.
[2] RAO G A, KYMAR M, SRINIVAS M, et al. Effect of standard heat treatment on the microstructure and mechanical properties of hot isostatically pressed superalloy Inconel 718[J]. Materials Science and Engineering:A,2003,355(1-2):114-125.
[3] 白秉哲, 杨鲁义, 赵耀峰. GH 4169 合金"等温锻造+直接时效"工艺探讨[J]. 稀有金属,2002,26(1):7-32.BAI Bing-zhe, YANG Lu-yi, ZHAO Yao-feng. Exploration of process "isothermal forging + direct aging" for GH4169 alloy[J]. Rare Metals,2002,26(1):7-32.
[4] OBLAK J M,PAULONIS K F,DUVALL D S. Coherency strengthening in Ni base alloys hardened by DO22 γ" precipitates[J]. Metallurgical Transactions A,1974,5(1):143-153.
[5] MAHONEY M W. Superplastic properties of alloy 718. Superalloy 718 Metallurgy and Applications.USA:The Minerals,Metals & Materials,1989.391-405.
[6] 呼和. 镍基铸造高温合金的热等精压处理[J]. 金属学报,2002,38(11):1199-1202.HU He. Hot isostatic pressing treatment of cast Ni base superalloy[J]. Acta Metallugica Sinica,2002,38(11):1199-1202.
[7] 王淑云, 李惠曲, 李辉忠,等. FGH95 合金等温锻造工艺研究[J]. 稀有金属,2003,27(4):452-454.WANG Shu-yun, LI Hui-qu, LI Hui-zhong, et al. Study on isothermal forging technology of FGH 95 alloy [J]. Rare Metals,2003,27(4):452-454.
[8] 黄卫东, 林鑫. 激光立体成形高性能金属零件研究进展[J]. 中国材料进展,2010,29(6):12-18.HUANG Wei-dong, LIN Xin. Research progress of laser solid formed metal parts of high performance[J].Materials China,2010,29(6):12-28.
[9] 黄卫东,林鑫,陈静,等.激光立体成形[M].西安:西北工业大学出版社,2007.HUANG Wei-dong, LIN Xin, CHEN Jing,et al. Laser Solid Forming[M].Xi'an:Northwestern Polytechnical University Press,2007.
[10] KNOROVSKY G A, CIESLAK M J, HEADLEY T J, et al. Inconel 718: a solidification diagram[J]. Metallurgical and Materials Transactions A,1989,20(10):2149-2158.
[11] SUNDARARAMAN M, MUKHOPADHYAY P, BANERJEE S. Some aspects of the precipitation of metastable intermetallic phases in Inconel 718[J]. Metallurgical and Materials Transactions A,1992,23(7):2015-2028.
[12] 朱景川,来忠红.固态相变原理[M].北京:科学出版社,2010. ZHU Jing-chuan, LAI Zhong-hong. Solid Phase Transformation Principle[M].Beijing:Science Press,2010.
[13] DU J H,LU X D,QU J L,et al.Microstructure and mechanical properties of Novel 718 superalloy[J].Acta Metallurgica Sinica-English Letter,2006,19(6):418-424.
[14] DONG Jian-xin, XIE Xi-shan, ZHANG Shou-hua. Coarsening behavior of γ" precipitates in modified inconel718 superalloy[J].Scripta Metallurgica et Materialia,1995,33(12):1933-1940.
[15] DEVAUXSA, NAZE L, MOLINS R, et al.Gamma double prime precipitation kinetic in alloy 718[J].Materials Science and Engineering:A,2008,486(1-2):117-122.
[16] HE J H, TANG X Y,FUKUYAMA S. Boundary in γ" precipitates in Inconel 718 nickel-base superalloy[J].Acta Metall Mater,1995,43(12):4403-4409.
[17] LIFSHITZ I M, SLYOZOV V V. The kinetics of precipitation from supersaturated solid solutions[J]. Journal of Physics and Chemistry of Solids,1961,19(1-2):35-50.
[18] CALDERON H A, FINE M E. Coarsening kinetics of coherent NiAl-type precipitates in Fe-Ni-Al and Fe-Ni-Al-Mo alloys[J]. Materials Science and Engineering,1984,63(2):197-208.
[19] LI X, SAUNDERS N, MIODOWNIK A P. The coarsening kinetics of γ' particles in nickel-based alloys[J]. Metallurgical and Materials Transactions A,2002,33(11):3367-3373.
[20] CALDERON H A, KOSTORZ G, QU Y Y, et al. Coarsening kinetics of coherent precipitates in Ni-Al-Mo and Fe-Ni-Al alloys[J].Materials Science and Engineering:A,1997,238(1):13-22.
[21] MAO J. Gamma prime precipitation modeling and strength responses in powder metallurgy superalloys[D]. West Virginia: West Virginia University,2002.
[22] DEVAUX A, NAZE L, MOLINS R, et al. Gamma double prime precipitation kinetic in alloy 718[J]. Materials Science and Engineering:A,2008,486(1-2):117-122.
[23] KARUNARATNE M S A, REED R C. Interdiffusion of niobium and molybdenum in nickel between 900-1300℃[J].Defect and Diffusion Forum,2005,237-240:420-425.
[1] 黄卫东, 李延民, 冯莉萍, 陈静, 杨海欧, 林鑫. 金属材料激光立体成形技术[J]. 材料工程, 2002, 0(3): 40-43,27.
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
版权所有 © 2015《材料工程》编辑部
地址:北京81信箱44分箱 邮政编码: 100095
电话:010-62496276 E-mail:matereng@biam.ac.cn
本系统由北京玛格泰克科技发展有限公司设计开发 技术支持:support@magtech.com.cn