Hostname: page-component-78c5997874-g7gxr Total loading time: 0 Render date: 2024-11-14T23:41:48.317Z Has data issue: false hasContentIssue false
  • English
  • Français

Orientation relationships between TiB (B27), B2, and Ti3Al phases

Published online by Cambridge University Press:  31 January 2011

C.L. Chen ,
W. Lu ,
L.L. He  and
H.Q. Ye
C.L. Chen
Affiliation:
Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, People’s Republic of China; and Research Center for Ultra-High Voltage Electron Microscopy, Osaka University, Osaka, Japan
W. Lu
Affiliation:
Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, People’s Republic of China; and Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, People's Republic of China
L.L. He*
Affiliation:
Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, People’s Republic of China; and Research Center for Ultra-High Voltage Electron Microscopy, Osaka University, Osaka, Japan
H.Q. Ye
Affiliation:
Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, People's Republic of China
*
a) Address all correspondence to this author. e-mail: llhe@imr.ac.cn
Get access

Abstract

The orientation relationships among TiB (B27), B2, and Ti3Al phases have been investigated by transmission electron microscopy. By using the composite selected-area electron diffraction technique, the orientation relationship between TiB (B27) and B2 was determined to be [100]TiB[001]B2, (001)TiB(010)B2; and that between TiB (B27) and Ti3Al was . These orientation relationships have been predicted precisely by the method of coincidence of reciprocal lattice points.

Keywords

AlloyMicrostructureTransmission electron microscopy (TEM)
Type
Articles
Information
Journal of Materials Research , Volume 24 , Issue 5 , May 2009 , pp. 1688 - 1692
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

REFERENCES

1.Kim, Y.W.: Ordered intermetallic alloys. Part III: Gamma titanium aluminides. JOM 96, 30 (1994).CrossRefGoogle Scholar
2.Appel, F., Sparka, U., and Wagner, R.: Work hardening and recovery of gamma base titanium aluminides. Intermetallics 7, 325 (1999).CrossRefGoogle Scholar
3.Maruyama, K., Yamaguchi, M., Suzuki, G., Zhu, H.L., Kim, H.Y., and Yoo, M.H.: Effects of lamellar boundary structural change on lamellar size hardening in TiAl alloy. Acta Mater. 52, 5185 (2004).CrossRefGoogle Scholar
4.Appel, F. and Wagner, R.: Microstructure and deformation of two-phase λ-titanium aluminides. Mater. Sci. Eng., R 22, 187 (1998).CrossRefGoogle Scholar
5.Yamaguchi, M., Inui, H., and Ito, K.: High-temperature structural intermetallics. Acta Mater. 48, 307 (2000).CrossRefGoogle Scholar
6.Calderon, H.A., Garibay-Febles, V., Umemoto, M., and Yamaguchi, M.: Mechanical properties of nanocrystalline Ti–Al–X alloys. Mater. Sci. Eng., A 329–331, 196 (2002).CrossRefGoogle Scholar
7.Hu, D.: Effect of boron addition on tensile ductility in lamellar TiAl alloys. Intermetallics 10, 851 (2002).CrossRefGoogle Scholar
8.Hecht, U., Witusiewicz, V., Drevermann, A., and Zollinger, J.: Grain refinement by low boron additions in niobium-rich TiAl-based alloys. Intermetallics 16, 969 (2008).CrossRefGoogle Scholar
9.Cheng, T.T.: The mechanism of grain refinement in TiAl alloys by boron addition-an alternative hypothesis. Intermetallics 8, 29 (2000).CrossRefGoogle Scholar
10.Hyman, M.E., McCullough, C., Valencia, J.J., Levi, C.G., and Mehrabian, R.: Microstructure evolution in TiAl alloys with B additions. Conventional solidification. Metall. Trans. A 20, 1847 (1989).CrossRefGoogle Scholar
11.Hyman, M.E., McCullough, C., Levi, C.G., and Mehrabian, R.: Evolution of boride morphologies in TiAl-B alloys. Metall. Trans. A 22, 1647 (1991).CrossRefGoogle Scholar
12.De Graef, M., Lofvander, J.P.A., and Levi, C.G.: The structure of complex monoborides in λ-TiAl alloys with Ta and B additions. Acta Metall. Mater. 39, 2381 (1991).CrossRefGoogle Scholar
13.Hu, D.: Effect of composition on grain refinement in TiAl-based alloys. Intermetallics 9, 1037 (2001).CrossRefGoogle Scholar
14.Chen, C.L., Lu, W., Lin, J.P., He, L.L., Chen, G.L., and Ye, H.Q.: Orientation relationship between TiB precipitate and λ-TiAl phase. Scr. Mater. 56, 441 (2007).CrossRefGoogle Scholar
15.Inkson, B.J., Boothroyd, C.B., and Humphreys, C.J.: Boride morphology in a (Fe, V, B) Ti-alloy containing B2-phase. Acta Metall. Mater. 43, 1429 (1995).CrossRefGoogle Scholar
16.Kitkamthorn, U., Zhang, L.C., Aindow, T.T., and Aindow, M.: The structure of ribbon borides in a Ti-44Al-4Nb-4Zr-1B alloy. Microsc. Microanal. 11(Suppl 2), 1702 (2005).CrossRefGoogle Scholar
17.Kitkamthorn, U., Zhang, L.C., and Aindow, M.: The structure of ribbon borides in a Ti-44Al-4Nb-4Zr-1B alloy. Intermetallics 14, 759 (2006).CrossRefGoogle Scholar
18.Ikuhara, Y. and Pirouz, P.: Orientation relationship in large mismatched bicrystals and coincidence of reciprocal lattice points (CRLP). Mater. Sci. Forum 207–209, 121 (1996).CrossRefGoogle Scholar
19.Pirouz, P., Ernst, F., and Ikuhara, Y.: On epitaxy and orientation relationships in bicrystals. Diffus. Defect Data B Solid State Phenom. 59–60, 51 (1998).CrossRefGoogle Scholar
20.Stemmer, S., Pirouz, P., Ikuhara, I., and Davis, R.F.: Film/substrate orientation relationship in the AIN/6H-SiC epitaxial system. Phys. Rev. Lett. 77, 1797 (1996).CrossRefGoogle Scholar
21.Yu, R., He, L.L., Guo, J.T., Ye, H.Q., and Lupinc, V.: Orientation relationship and interfacial structure between ζ-Ti5Si3 precipitates and λ-TiAl intermetallics. Acta Mater. 48, 3701 (2000).CrossRefGoogle Scholar
22.Zhang, M-X. and Kelly, P.M.: Edge-to-edge matching model for predicting orientation relationships and habit planes—The improvements. Scr. Mater. 52, 963 (2005).CrossRefGoogle Scholar
23.Zhang, M-X. and Kelly, P.M.: Edge-to-edge matching and its applications. Part I. Application to the simple HCP/BCC system. Acta Mater. 53, 1073 (2005).CrossRefGoogle Scholar
24.Zhang, M-X. and Kelly, P.M.: Edge-to-edge matching and its applications. Part II. Application to Mg–Al, Mg–Y and Mg–Mn alloys. Acta Mater. 53, 1085 (2005).CrossRefGoogle Scholar