|
OALib Journal期刊
ISSN: 2333-9721
费用：99美元
|
|
|
|
长期热循环条件下全片层高Nb－TiAl合金显微组织稳定性
DOI: 10.3724/SP.J.1037.2013.00495, PP. 1416-1422
Keywords: 高Nb－TiAl合金,热循环,热稳定性,相变
Abstract:
分别在900和1000℃下对全片层Ti－45Al－8.5Nb(W,B,Y)合金进行了长期热循环(500和1000cyc)实验,通过光学显微镜(OM)、扫描电镜(SEM)及透射电镜(TEM)研究了该合金在不同温度长时热循环条件下的显微组织稳定性.研究表明,合金经全片层热处理工艺后凝固偏析(Al偏析)仍未完全消除,900℃下长期热循环后Al偏析处易产生不连续粗化,合金1000cyc热循环后仍未发现α2相的球化;1000℃下合金长期热循环后Al偏析处易析出大块γ晶粒,合金经500cyc热循环后沿晶界产生了许多细小的等轴γ晶粒,同时α2相在γ晶粒内球化析出.1000cyc热循环后晶界、晶内均有大量的等轴γ晶粒析出,且晶粒内部有不同取向的长条状或颗粒状α2相析出;合金1000℃下长期热循环后,长条状或颗粒状α2相从γ晶粒内沿晶面{111}γ析出,α2相与γ基体保持共格位向关系.
| [1] | Kim Y W.JOM, 1995; 47: 39
|
| [2] | Wu X. Intermetallics, 2006; 14: 1114
|
| [3] | Lin J P, Xu X J, Wang Y L, He S F, Zhang Y, Song X P, Chen G L.Intermetallics, 2007; 15: 668
|
| [4] | Appel F, Brossmann U, Christoph U, Eggert S, Janschek P, Lorenz U,Mulauer J, Oehring M, Paul J D H.Adv Eng Mater, 2000; 2: 699
|
| [5] | Zhao W Y, Pei Y L, Zhang D H, Ma Y, Gong S K, Xu H B. Intermetallics, 2011; 19: 429
|
| [6] | Kim Y W. J Mater Sci Technol, 1994; 10: 79
|
| [7] | Es－Souni M, Bartels A, Wagner R. Mater Sci Eng, 1995; A192－193: 698
|
| [8] | Morris M A, Leboeuf M. Mater Sci Eng, 1997: A239－240: 429
|
| [9] | Hu D, Godfrey A B, Loretto M H. Intermetallics, 1998; 6: 413
|
| [10] | Ramanujan R V, Maziasz P J, Liu C T. Acta Mater, 1996; 44: 2611
|
| [11] | Huang Z W, Voice W, Bowen P. Intermetallics, 2000; 8: 417
|
| [12] | Cheng T T. Intermetallics, 1999; 7: 995
|
| [13] | Huang Z W, Cong T. Intermetallics, 2010; 18: 161
|
| [14] | Beschliesser M, Chatterjee A, Lorich A, Knabl W, Kestler H, Dehm G,Clemens H. Mater Sci Eng, 2002; A329－331: 124
|
| [15] | Geng H B, He S Y, Lei T Q. Acta Metall Sin, 1996; 32: 51
|
| [16] | Qin G, Wang J, Hao S. Intermetallics, 1999; 7: 1
|
| [17] | Wang X P, Zheng Y R.J Mater Eng, 2000; (7): 20
|
| [18] | (汪小平, 郑运荣. 材料工程, 2000; (7): 20)
|
| [19] | Tang J C, Huang B Y, He Y H, Xie K.Trans Nonferrous Met Soc China, 2000; 10: 10
|
| [20] | (耿洪滨, 何世禹, 雷廷权. 金属学报, 1996; 32: 51)
|
| [21] | Manna I, Pabi S K, Gust W.Int Mater Rev, 2001; 46: 53
|
Full-Text
|
|
Contact Us
service@oalib.com QQ:3279437679 
WhatsApp +8615387084133
|
|
