研究了不同热处理制度下Ti-22Al-27Nb(原子分数,%)合金的显微组织和拉伸性能.经过锻造的试样,直接进行短时时效,得到细小的网篮状组织,其室温和650℃时的拉伸性能都可以保持较高水平.长时时效后,O相比例增大,合金的强度增加,但塑性显著降低.合金在B2相区固溶后,经过水淬或空冷后进行低温时效,在初生的B2相上析出粗大且取向趋于一致的O相组织,合金的强度和塑性都较差.当合金在B2相区固溶随炉冷却后低温时效,将在初生的B2相上析出细小和取向不同的O和α2相,合金的强度能够保持到较高的水平,而塑性也明显增加.
参考文献
| [1] | Rowe R G. Adv Mater Process, 1992; (3): 33 |
| [2] | Rowe R G. US Pat No.5032357, 1991 |
| [3] | Rowe R G, Konitzer D G, Woodfield A P, Chesnutt J C.Mater Res Soc Symp Proc, 1991; 213:703 |
| [4] | Mao Yong, Li S Q, Zhang J W, Peng J H, Zou D X, Zhong Z Y. Intermetallics, 2000; 8:659 |
| [5] | Kumpfert J, Leyens C. In: Nathal M V, Darolia R, Liu C T, Martin P L, Miracle D B, Wanger R, Yamaguchi M eds., Structural Intermetallics 1997, The Minerals, Metals & Materials Society, 1997:895 |
| [6] | Boehlert C J. Metall Mater Trans, 2001; 32A: 1977 |
| [7] | Banerjee D. Prog Mater Sci, 1997; 42:135 |
| [8] | Chatterjee A, Roessler J R, Brown L E, Heitman P W,Richardson G E. In: Nathal M V, Darolia R, Liu C T,Martin P L, Miracle D B, Wanger R, Yamaguchi M eds.,Structural Intermetallics 1997, The Minerals Metals &Materials Society, 1997:905 |
| [9] | Banerjee D, Gogia A K, Nandy T K, Joshi V A. Acta Metall, 1988; 36:871 |
| [10] | Boehlert C J, Majumdar B S, Seetharaman V, Miracle D B. Metall Mater Trans, 1999; 30A: 2305 |
| [11] | 吴波,沈剑韵,商顺利,孙军,张翥,彭德林,柳松青.稀有金属,2002;26(1):12 |
| [12] | Wu B, Shen J Y, Zhang Z, Sun J, Shang S L, Peng D L,Liu S Q. In: Huang B Y, Liu C Teds., Proc 4th Int Workshop on Ordered Intermetallic Compounds and Advanced Materials, Zhangjiajie, Hunan, China, Oct. 8, 2001:58 |
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