|
|
|
| CLASSICAL PRECIPITATION DYNAMIC MODEL OF γ' PHASE OF NICKEL--BASED SUPER ALLOYS AND APPLICATIONS |
| SHI Yuye1, JIAO Shaoyang1,2, DONG Jianxin1, ZHANG Maicang1 |
1. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083
2. China Nuclear Power Engineering Co. Ltd., Beijing 100840 |
|
Cite this article:
SHI Yuye, JIAO Shaoyang, DONG Jianxin, ZHANG Maicang. CLASSICAL PRECIPITATION DYNAMIC MODEL OF γ' PHASE OF NICKEL--BASED SUPER ALLOYS AND APPLICATIONS. Acta Metall Sin, 2012, 48(6): 661-670.
|
|
|
Abstract Based on the classical nucleation theory, and considering the effects of heat temperature and preservation time on precipitation, the γ' precipitation model in nickel-based superalloy was established. In combination with the characteristic value data of γ' precipitation which was got by isothermal aging experiment of GH738 alloy, the relative accuracy of simulation result was verified. Results show that the classic dynamic model of the precipitation can better forecast that γ' phase of multiple complex nickel--based alloy system mainly precipitate by uniform nucleation. Further, precipitation model was combined with four typical superalloys GH80A, GH738, U720Li and DD407. The effects of the contents of Al, Ti and its ratio change on the precipitation of γ' were calculated and analyzed. Results showed that the better role of Al than Ti on equilibrium content. Under the premise of equal amount of Al + Ti, the increasing of Ti had a greater contribution to the driving force of precipitation and complete precipitation time, and increased the volume fraction of the beginning of precipitation, but reduced the size of precipitated phase.
|
|
Received: 07 December 2011
|
|
|
| Fund: National Natural Science Foundation of China |
| [1] Wang Y, Banerjee D, Su C C. Acta Mater, 1998; 46: 2983[2] Wang G, Du D S, Ma N. Acta Mater, 2009; 57: 316[3] Gale W F, Nemani R V, Horton J A. J Mater Sci, 1996; 31: 1681[4] Mao J. PhD Thesis, West Virginia University, Morgantown, 2002[5] Booth-Morrison C, Weninger J, Sudbrack C K, Mao Z, Noebe R D,Seidman D N. Acta Mater, 2008; 56: 3422[6] Kelekanjeri S K, Gerhardt R A. Electrochim Acta, 2006; 51: 1873[7] Yao Z H, Dong J X, Zhang M C, Yu Q Y. Trans Mater Heat Treat,2011; 32(10): 43 (姚志浩, 董建新, 张麦仓, 于秋颖. 材料热处理学报, 2011; 32(10): 43)[8] Oja M, Chandran K S, Tryon R G. Int J Fatigue, 2010; 32: 551[9] Moat R J, Pinkerton A J, Li L, Withers P J, Preuss M. Acta Mater,2009; 57: 1220[10] Wisniewski A, Beddoes J. Mater Sci Eng, 2009; A510: 266[11] Wang Y, Sun F, Dong X P, Zhang L T, Shan A D. Acta Metall Sin,2010; 46: 334 (王衣, 孙峰, 董显平, 张澜庭, 单爱党. 金属学报, 2010; 46: 334)[12] Wang M G, Tian S G, Yu X F, Qian B J. Rare Met Mater Eng,2010; 39: 268 (王明罡, 田素贵, 于兴福, 钱本江. 稀有金属材料与工程, 2010; 39: 268)[13] Zhu T, Wang C Y, Gan Y. Acta Phys Sin, 2009; 58: 156 (朱弢,王崇愚, 干勇. 物理学报, 2009; 58: 156)[14] Wen Y H, Zhu T, Cao L X, Wang C Y. Acta Phys Sin, 2003; 52: 2520 (文玉华, 朱弢,曹立霞, 王崇愚. 物理学报, 2003; 52: 2520)[15] Lifshitz I M, Slyozov V V. J Phys Chem Sol, 1961; 19: 35[16] Wagner C. Z Elektrochem, 1961; 65: 581[17] Wang X D, Wang Q, Jiang J Z. J Alloys Compd, 2007; 440: 189[18] Hong C M, Dong J X, Zhang Y F, Zhang M C, Zheng L. Rare Met Mater Eng, 2009; 38: 510 (洪成淼, 董建新, 张玉峰, 张麦仓, 郑磊. 稀有金属材料与工程, 2009; 38: 510)[19] Song X P, Li H Y, Gai J F, Chen G L. Acta Metall Sin,2005; 41: 1233 (宋西平, 李红宇, 盖靖峰, 陈国良. 金属学报, 2005; 41: 1233) |
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
