Hostname: page-component-78c5997874-8bhkd Total loading time: 0 Render date: 2024-11-17T17:22:40.976Z Has data issue: false hasContentIssue false
  • English
  • Français

Microstructures and mechanical properties of Ti–44Al–5Nb–3Cr–1.5Zr–xMo–yB alloys

Published online by Cambridge University Press:  15 July 2020

Zhiping Li Open the ORCID record for Zhiping Li [Opens in a new window] ,
Donghui Zhang ,
Liangshun Luo ,
Binbin Wang ,
Liang Wang ,
Yanqing Su ,
Jingjie Guo  and
Hengzhi Fu
Zhiping Li
Affiliation:
National Key Laboratory for Precision Hot Processing of Metals, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin150001, People's Republic of China
Donghui Zhang
Affiliation:
National Key Laboratory for Precision Hot Processing of Metals, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin150001, People's Republic of China
Liangshun Luo*
Affiliation:
National Key Laboratory for Precision Hot Processing of Metals, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin150001, People's Republic of China
Binbin Wang
Affiliation:
National Key Laboratory for Precision Hot Processing of Metals, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin150001, People's Republic of China
Liang Wang
Affiliation:
National Key Laboratory for Precision Hot Processing of Metals, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin150001, People's Republic of China
Yanqing Su
Affiliation:
National Key Laboratory for Precision Hot Processing of Metals, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin150001, People's Republic of China
Jingjie Guo
Affiliation:
National Key Laboratory for Precision Hot Processing of Metals, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin150001, People's Republic of China
Hengzhi Fu
Affiliation:
National Key Laboratory for Precision Hot Processing of Metals, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin150001, People's Republic of China
*
a)Address all correspondence to this author. e-mail: [email protected]
Get access

Abstract

TiAl alloys are potential structural high-temperature structural materials at a service temperature of ~900 °C, while poor ductility at room temperature and high creep rate at the elevated temperature limits the applications. To improve the room-temperature and high-temperature mechanical properties of Ti–44Al–5Nb–3Cr–1.5Zr, Mo and B were introduced into this system and Ti–44Al–5Nb–3Cr–1.5Zr–xMo–yB alloys were proposed. And then, we, respectively, studied the microstructures and mechanical properties of Ti–44Al–5Nb–3Cr–1.5Zr–xMo–0B and Ti–44Al–5Nb–3Cr–1.5Zr–1Mo–yB to elucidate the role for the addition of Mo and B. It is found that Mo can increase the fraction of B2 phase in the alloys and the microstructures of the alloys are greatly refined by the addition of B. The compression test results indicate that Mo has a positive influence on the high-temperature compressive properties of TiAl-based alloys, whereas B addition can improve their room-temperature compressive properties of Ti–44Al–5Nb–3Cr–1.5Zr–1Mo–yB alloys; the morphology of borides in each sample should be the structural origin for these phenomena.

Keywords

TiAl alloysmicrostructuremechanical propertiesboronmolybdenum
Type
Article
Information
Journal of Materials Research , Volume 35 , Issue 20 , 28 October 2020 , pp. 2756 - 2764
Check for updates
Copyright
Copyright © Materials Research Society 2020

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

Dimiduk, D.M.: Gamma titanium aluminide alloys – an assessment within the competition of aerospace structural materials. Mater. Sci. Eng., A. 263(2), 281 (1999).CrossRefGoogle Scholar
Wu, X.: Review of alloy and process development of TiAl alloys. Intermetallics 14(10-11), 1114 (2006).CrossRefGoogle Scholar
Clemens, H. and Mayer, S.: Design, processing, microstructure, properties, and applications of advanced intermetallic TiAl alloys. Adv. Eng. Mater. 15(4), 191 (2013).CrossRefGoogle Scholar
Janschek, P.: Wrought TiAl blades. Mater. Today: Proc. 2, S92 (2015).Google Scholar
Yang, R.: Advances and challenges of TiAl base alloys. Acta Metall. Sin. 51(2), 129 (2015).Google Scholar
Appel, F., Clemens, H., and Fischer, F.D.: Modeling concepts for intermetallic titanium aluminides. Prog. Mater. Sci. 81, 55 (2016).CrossRefGoogle Scholar
Bewlay, B.P., Nag, S., Suzuki, A., and Weimer, M.J.: TiAl alloys in commercial aircraft engines. Mater. High Temp. 33(4–5), 549 (2016).CrossRefGoogle Scholar
Clemens, H. and Mayer, S.: Intermetallic titanium aluminides in aerospace applications – processing, microstructure and properties. Mater. High Temp. 33(4–5), 560 (2016).CrossRefGoogle Scholar
Kastenhuber, M., Rashkova, B., Clemens, H., and Mayer, S.: Effect of microstructural instability on the creep resistance of an advanced intermetallic gamma-TiAl based alloy. Intermetallics 80, 1 (2017).CrossRefGoogle Scholar
Wei, D.-X., Koizumi, Y., Nagasako, M., and Chiba, A.: Refinement of lamellar structures in Ti-Al alloy. Acta Mater. 125, 81 (2017).CrossRefGoogle Scholar
Liu, T., Luo, L., Su, Y., Wang, L., Li, X., Chen, R., Guo, J., and Fu, H.: Effect of growth rate on microstructures and microhardness in directionally solidified Ti–47Al–1.0W–0.5Si alloy. J. Mater. Res. 31(05), 618 (2016).CrossRefGoogle Scholar
Mayer, S., Erdely, P., Fischer, F.D., Holec, D., Kastenhuber, M., Klein, T., and Clemens, H.: Intermetallic beta-solidifying gamma-TiAl based alloys – from fundamental research to application. Adv. Eng. Mater. 19(4), 1 (2017).CrossRefGoogle Scholar
Kim, M.C., Oh, M.H., Lee, J.H., Inui, H., Yamaguchi, M., and Wee, D.M.: : Composition and growth rate effects in directionally solidified TiAl alloys. Mater. Sci. Eng., A 240, 570 (1997).CrossRefGoogle Scholar
Jung, I.S., Jang, H.S., Oh, M.H., Lee, J.H., and Wee, D.M.: Microstructure control of TiAl alloys containing beta stabilizers by directional solidification. Mater. Sci. Eng., A 329, 13 (2002).CrossRefGoogle Scholar
Kartavykh, A.V., Asnis, E.A., Piskun, N.V., Statkevich, I.I., and Gorshenkov, M.V.: Microstructure and mechanical properties control of gamma-TiAl(Nb,Cr,Zr) intermetallic alloy by induction float zone processing. J. Alloys Compd 643, S182 (2015).CrossRefGoogle Scholar
Kartavykh, A.V., Asnis, E.A., Piskun, N.V., Statkevich, I.I., Gorshenkov, M.V., and Korotitskiy, A.V.: A promising microstructure/deformability adjustment of beta-stabilized gamma-TiAl intermetallics. Mater. Lett. 162, 180 (2016).CrossRefGoogle Scholar
Kartavykh, A.V., Asnis, E.A., Piskun, N.V., Statkevich, I.I., Gorshenkov, M.V., and Korotitskiy, A.V.: Room-temperature tensile properties of float-zone processed beta-stabilized gamma-TiAl(Nb,Cr,Zr) intermetallic. Mater. Lett. 188, 88 (2017).CrossRefGoogle Scholar
Kartavykh, A.V., Asnis, E.A., Piskun, N.V., Statkevich, I.I., Stepashkin, A.A., Gorshenkov, M.V., and Akopyan, T.K.: Complementary thermodynamic and dilatometric assessment of phase transformation pathway in new beta-stabilized TiAl intermetallics. Mater. Lett. 189, 217 (2017).CrossRefGoogle Scholar
Qiu, C., Liu, Y., Zhang, W., Liu, B., and Hang, X.: Development of a Nb-free TiAl-based intermetallics with a low-temperature superplasticity. Intermetallics 27, 46 (2012).CrossRefGoogle Scholar
Qiu, C., Liu, Y., Huang, L., Zhang, W., Liu, B., and Lu, B.: Effect of Fe and Mo additions on microstructure and mechanical properties of TiAl intermetallics. Trans. Nonferrous Met. Soc. China 22(3), 521 (2012).CrossRefGoogle Scholar
Yang, Y., Fang, H., Chen, R., Su, Y., Ding, H., and Guo, J.: a comparative study on microstructure and mechanical properties of Ti-43/46Al-5Nb-0.1B Alloys Modified by Mo. Adv. Eng. Mater. 22(4), 1901075 (2019).Google Scholar
Ding, H., Wang, Y., Chen, R., Guo, J., and Fu, H.: Effect of growth rate on microstructure and tensile properties of Ti-45Al-2Cr-2Nb prepared by electromagnetic cold crucible directional solidification. Mater. Des. 86, 670 (2015).CrossRefGoogle Scholar
Azad, S., Mandal, R.K., and Singh, A.K.: Effect of Mo addition on transformation behavior of (alpha(2)+gamma) based Ti-Al alloys. Mater. Sci. Eng., A 429(1–2), 219 (2006).CrossRefGoogle Scholar
Wang, W.D., Ma, Y.C., Chen, B., Gao, M., Liu, K., and Li, Y.Y.: Effects of boron addition on grain refinement in TiAl-based alloys. J. Mater. Sci. Technol. 26(7), 639 (2010).CrossRefGoogle Scholar
Larsen, D.E., Christodoulou, L., Kampe, S.L., and Sadler, P.: Investment-cast processing of XDTM near-gamma titanium aluminides. Mater. Sci. Eng., A 144, 45 (1991).CrossRefGoogle Scholar
Bryant, J.D., Christodoulou, L., and Maisano, J.R.: Effect of TIB2 additions on the colony size of near gamma titanium aluminides. Scr. Metall. Mater. 24(1), 33 (1990).CrossRefGoogle Scholar
Zhang, W.J. and Deevi, S.C.: An analysis of the lamellar transformation in TiAl alloys containing boron. Mater. Sci. Eng., A 337(1-2), 17 (2002).CrossRefGoogle Scholar
Hu, D., Yang, C., Huang, A., Dixon, M., and Hecht, U.: Grain refinement in beta-solidifying Ti44Al8Nb1B. Intermetallics 23, 49 (2012).CrossRefGoogle Scholar
Hu, D.: Effect of composition on grain refinement in TiAl-based alloys. Intermetallics 9(12), 1037 (2001).CrossRefGoogle Scholar
Imayev, R.M., Imayev, V.M., Oehring, M., and Appel, F.: Alloy design concepts for refined gamma titanium aluminide based alloys. Intermetallics 15(4), 451 (2007).CrossRefGoogle Scholar
Hu, D., Wu, X., and Loretto, M.H.: Advances in optimisation of mechanical properties in cast TiAl alloys. Intermetallics 13(9), 914 (2005).CrossRefGoogle Scholar
Fang, H., Chen, R., Yang, Y., Tan, Y., Su, Y., Ding, H., and Guo, J.: Effects of boron on microstructure evolution and mechanical properties in Ti46Al8Nb2.6C0.8Ta alloys. Adv. Eng. Mater. 21(8), 1900143 (2019).CrossRefGoogle Scholar