Hostname: page-component-7479d7b7d-t6hkb Total loading time: 0 Render date: 2024-07-11T06:28:16.993Z Has data issue: false hasContentIssue false
  • English
  • Français

Effect of prestrain on microstructure and mechanical behavior of aged Ti–10V–2Fe–3Al alloy

Published online by Cambridge University Press:  31 January 2011

Wei Chen ,
Zhenya Song ,
Lin Xiao ,
Qiaoyan Sun ,
Jun Sun  and
Peng Ge
Jun Sun*
Affiliation:
State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an 710049, People’s Republic of China
Peng Ge
Affiliation:
Northwest Institute for Nonferrous Metal Research, Xi’an 710016, People’s Republic of China
*
a) Address all correspondence to this author. e-mail: junsun@mail.xjtu.edu.cn
Get access

Abstract

The effect of prestrain on microstructure and mechanical behavior of aged Ti–10V–2Fe–3Al alloy was investigated. The results showed that prestrain caused the tensile strength to decrease by 5%, but the elongation to fracture significantly improved by about 200%, in comparison with the unstrained samples, using a much shorter aging time. Transmission electron microscopy investigations showed that nano-sized alpha (α) particles homogeneously precipitated in the beta (β) matrix, and continuous α films formed along grain boundaries in the unstrained and aged samples. However, in the prestrained samples, the coarse stress induced martensite laths decomposed into α- and β-phases in the form of alternately arranged plates, which suppressed formation of the continuous grain boundary α films during aging. The hardness of the prestrained samples was lower than that of the unstrained samples after the same aging treatments. The enhancement of ductility can be mainly attributed to the suppression of grain boundary α films and the reduced hardness in prestrained samples.

Keywords

DuctilityStrengthTi
Type
Articles
Information
Journal of Materials Research , Volume 24 , Issue 9 , September 2009 , pp. 2899 - 2908
Copyright
Copyright © Materials Research Society 2009

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1Boyer, R.R. and Kuhlman, G.W.: Processing properties relationships of Ti–10V–2Fe–3Al. Metall. Trans. A 18, 2095 (1987)CrossRefGoogle Scholar
2Duerig, T.W., Terlinde, G.T., and Williams, J.C.: Phase transformations and tensile properties of Ti–10V–2Fe–3Al. Metall. Trans. A 11, 1987 (1980)CrossRefGoogle Scholar
3Terlinde, G.T., Duerig, T.W., and Williams, J.C.: Microstructure, tensile deformation, and fracture in aged Ti–10V–2Fe–3Al. Metall. Trans. A 14, 2101 (1983)CrossRefGoogle Scholar
4Chen, C.C. and Boyer, R.R.: Practical considerations for manufacturing high strength Ti–10V–2Fe–3A1 forgings. JOM 31, 33 (1979)CrossRefGoogle Scholar
5Boyer, R.R.: Design properties of a high-strength titanium alloy. Ti–10V–2Fe–3Al. JOM 32, 61 (1980)CrossRefGoogle Scholar
6Eylon, D., Vassel, A., Combres, Y., Boyer, R.R., Bania, P.J., and Schultz, R.W.: Issues in the development of beta titanium alloy. JOM 46, 14 (1994)CrossRefGoogle Scholar
7Boyer, R.R.: Applications of beta titanium alloys in airframes, in Beta Titanium Alloys in the 1990's (The Materials Society, Warrendale, PA, 1993), p. 335.Google Scholar
8Rendigs, K.H.: Titanium products used at Airbus, in The 10th World Conference on Titanium (Hamburg, Germany, 2003), p. 2659.Google Scholar
9Duerig, T.W. and Williams, J.C.: Overview: Microstructure and properties of beta titanium alloy, in Beta Titanium Alloys in the 1980's (AIME, New York, 1984), p. 19.Google Scholar
10Balasubrahmanyam, V.V. and Prasad, Y.: Hot deformation mechanisms in metastable beta titanium alloy Ti–10V–2Fe–3Al. Mater. Sci. Technol. 17, 1222 (2001)CrossRefGoogle Scholar
11Jackson, M., Dashwood, R., Christodoulou, L., and Flower, H.: The microstructural evolution of near beta alloy Ti–10V–2Fe–3Al during subtransus forging. Metall. Mater. Trans. A 36, 1317 (2005)CrossRefGoogle Scholar
12Furuhara, T., Poorganji, B., Abe, H., and Maki, T.: Dynamic recovery and recrystallization in titanium alloys by hot deformation. JOM 59, 64 (2007)CrossRefGoogle Scholar
13Williams, J.C. and Starke, E.A. Jr.,: Progress in structural materials for aerospace systems. Acta Mater. 51, 5775 (2003)CrossRefGoogle Scholar
14Duerig, T.W., Albercht, J., Richter, D., and Fischer, P.: Formation and reversion of stress induced martensite in Ti–10V–2Fe–3Al. Acta Metall. 30, 2161 (1982)CrossRefGoogle Scholar
15Bhattcharjee, A., Bhargava, S., Varma, V.K., Kamat, S.V., and Gogia, A.K.: Effect of b grain size on stress induced martensitic transformation in b solution treated Ti–10V–2Fe–3Al alloy. Scr. Mater. 53, 195 (2005)CrossRefGoogle Scholar
16Bhattacharjee, A., Varam, V.K., Kamat, S.V., Gogia, A.K., and Bhargava, S.: Influence of b grain size on tensile behavior and ductile fracture toughness of titanium alloy Ti–10V–2Fe–3Al. Metall. Mater. Trans. A 37, 1423 (2006)CrossRefGoogle Scholar
17Furuhara, T., Annaka, S., Tomio, Y., and Maki, T.: Superelasticity in Ti–10V–2Fe–3Al alloys with nitrogen addition. Mater. Sci. Eng., A 438–440, 825 (2006)CrossRefGoogle Scholar
18Costa, J.E., Williams, J.C., and Thompson, A.W.: The effect of hydrogen on mechanical properties in Ti–10V–2Fe–3Al. Metall. Trans. A 18, 1421 (1987)CrossRefGoogle Scholar
19A.Nwobu, I.P., Flower, H.M., and West, D.R.F.: Decomposition of stress-induced and deformed orthorhombic μ martensite in near beta titanium alloy, in Sixth World Conference on Titanium (France, 1988), p. 1583.Google Scholar
20Paradkar, A.G., Kamat, S.V., Gogia, A.K., and Kashyap, B.P.: Various stages in stress–strain curve of Ti–Al–Nb alloys undergoing SIMT. Mater. Sci. Eng., A 456, 292 (2007)CrossRefGoogle Scholar
21Aaronson, H.I.: Atomic mechanisms of diffusional nucleation and growth and comparisons with their counterparts in shear transformations. Metall. Trans. A 24, 241 (1993)CrossRefGoogle Scholar
22Furuhara, T., Lee, H.J., Menon, E.S.K., and Aaronson, H.I.: Interphase boundary structures associated with diffusional phase transformations in Ti-base alloys. Metall. Trans. A 21, 1627 (1990)CrossRefGoogle Scholar
23Porter, D.A. and Easterling, K.E.: Phase Transformations in Metals and Alloys, 2nd ed. (Chapman and Hall, London, UK, 1992), p. 313.CrossRefGoogle Scholar
24Ivasishin, O.M., Kosenko, M.S., and Flower, H.M.: Crystallographic features of modulated structure on titanium alpha μ martensite decomposition, in Titanium'95 (Birmingham, UK, 1995), p. 2478.Google Scholar