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DYNAMIC SOFTENING MECHANISM OF 2099 ALLOY DURING HOT DEFORMATION PROCESS |
ZHANG Fei1,2, SHEN Jian1, YAN Xiaodong1, SUN Jianlin2, JIANG Na3, ZHOU Hua3 |
1 Beijing General Research Institute for Non-ferrous Metals, Beijing 100088 2 School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083 3 Southwest Aluminum (Group) Co., Ltd, Chongqing 401326 |
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Cite this article:
ZHANG Fei, SHEN Jian, YAN Xiaodong, SUN Jianlin, JIANG Na, ZHOU Hua. DYNAMIC SOFTENING MECHANISM OF 2099 ALLOY DURING HOT DEFORMATION PROCESS. Acta Metall Sin, 2014, 50(6): 691-699.
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Abstract Dynamic softening mechanism of 2099 alloy was investigated by isothermal compression tests, thermal activation parameters calculation and comparison, EBSD and TEM techniques. On the basis of Zener-Hollomon parameter (Z) and deformation temperature (T), combining thermal activation parameters and microstructures analysis, the softening mechanism of 2099 alloy during hot deformation has been proposed. Dislocation cross slip plays a dominant role under the conditions of lnZ≥35.5 and T≤380 ℃. While, deformation mechanisms such as cross slip, climb of dislocation and unzipping of attractive junction play a joint role when lnZ≤37.4 and T≥340 ℃. Particularly, dynamic recrystallization occurred in the range of lnZ≤35.1 and T≥420 ℃, cross slip, climb and unzipping of dislocation and dynamic recrystallization are the main softening mechanisms in this condition. Dynamic recrystallization nucleation mechanisms are constituted of grain boundaries bulging nucleation and subgrain rotated induced nucleation, and the latter becomes more significant with increasing temperature and decreasing strain rate.
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Received: 11 November 2013
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[1] |
Jabra J, Romios M, Lai J, Lee E, Setiawan M, Lee E W, Witters J, Abourialy N, Ogren J R, Oppenheim T, Frazier W E, Es-Said O S. J Mater Eng Perform, 2006; 15: 601
|
[2] |
Ma Y, Zhou X, Thompson G E, Hashimoto T, Thomson P, Fowles M. Mater Chem Phys, 2011; 126: 46
|
[3] |
Romios M, Tiraschi R, Parrish C, Babel H W, Ogren J R, Es-Said O S. J Mater Eng Perform, 2005; 14: 641
|
[4] |
Ward N, Tran A, Abad A, Lee E W, Hahn M, Fordan E, Es-Said O S. J Mater Eng Perform, 2011; 20: 989
|
[5] |
Wei X Y, Zheng Z Q, She L J, Chen Q N, Li S C. Rare Met Mater Eng, 2010; 39: 1583
|
|
(魏修宇, 郑子樵, 佘玲娟, 陈秋妮, 李世晨. 稀有金属材料与工程, 2010; 39: 1583)
|
[6] |
Gourdet S, Montheillet F. Mater Sci Eng, 2000; A283: 274
|
[7] |
Tajally M, Huda Z, Masjuki H H. Met Sci Heat Treat, 2011; 53: 165
|
[8] |
Hu H E, Zhen L, Zhang B Y, Yang L, Chen J Z. Mater Charact, 2008; 59: 1185
|
[9] |
Faivre P, Doherty R D. J Mater Sci, 1979; 14: 897
|
[10] |
Wan J L, Sun X J, Gu J L, Chen N P. Acta Metall Sin, 1999; 35:1031
|
|
(万菊林, 孙新军, 顾家琳, 陈南平. 金属学报, 1999; 35: 1031)
|
[11] |
Xu X J, Wang B, Wu G C, Zhang F B, Song T, Luo Y, Cheng X N. Rare Met Mater Eng, 2011; 40(Suppl 2): 248
|
|
(许晓静, 王 彬, 吴桂潮, 张福豹, 宋 涛, 罗 勇, 程晓农. 稀有金属材料与工程, 2011; 40(增刊2): 248)
|
[12] |
Song T, Xu X J, Fan Z, Luo Y, Wang B, Wu G C, Zhang Z Q, Zhang Y K. Rare Met Mater Eng, 2012; 41(Suppl 2): 374
|
|
(宋 涛, 许晓静, 范 真, 罗 勇, 王 彬, 吴桂潮, 张振强, 张允康. 稀有金属材料与工程, 2012; 41(增刊2): 374)
|
[13] |
Zhu X H, Zheng Z Q, Zhong S. Chin J Nonferrous Met, 2010; 20: 1861
|
|
(朱小辉, 郑之樵, 钟 申. 中国有色金属学报, 2010; 20: 1861)
|
[14] |
Fragomeni J, Wheeler R, Jata K V. J Mater Eng Perform, 2005; 14: 18
|
[15] |
Song T, Xu X J, Fan Z, Zhang Z Q, Wang B, Luo Y. Chin J Rare Met, 2012; 36: 196
|
|
(宋 涛, 许晓静, 范 真, 张振强, 王 彬, 罗 勇. 稀有金属, 2012; 36: 196)
|
[16] |
Kertz J E, Gouma P I, Buchheit R G. Metall Mater Trans, 2001; 32A: 2561
|
[17] |
Csontos A A, Starke E A. Metall Mater Trans, 2000; 31A: 1965
|
[18] |
Odeshi A G, Adesola A O, Badmos A Y. Eng Fail Anal, 2013; 35: 302
|
[19] |
Zhang F, Shen J, Yan X D, Sun J L, Sun X L, Yang Y. Rare Met, 2014; 33: 28
|
[20] |
Shen J. Chin J Nonferrous Met, 2001; 11: 593
|
|
(沈 健. 中国有色金属学报, 2001; 11: 593)
|
[21] |
Rao K P, Prasad Y V R K. J Mech Work Technol, 1986; 13: 83
|
[22] |
Li W, Li H, Wang Z X, Zheng Z Q. Mater Sci Eng, 2011; A528: 4101
|
[23] |
Li J C M. J Appl Phys, 1962; 33: 2965
|
[24] |
Samantaray D, Mandal S, Bhaduri A K. Mater Des, 2010; 31: 982
|
[25] |
Song W X. Metallography. 2nd Ed., Beijing: Metallurgical Industry Press, 2010: 189
|
|
(宋维锡. 金属学. 第二版, 北京: 冶金工业出版社, 2010: 189)
|
[26] |
Shen J. PhD Dissertation, Central South University of Technology, Changsha, 1996
|
|
(沈 健. 中南工业大学博士学位论文, 长沙, 1996)
|
[27] |
Wang Y, Shao W Z, Zhen L, Zhang X M. Mater Sci Eng, 2008; A486: 321
|
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