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Distribution of Alloying Elements within the Constituent Phases of a C-containing γ-TiAl Based Alloy studied by Atom Probe Tomography

Published online by Cambridge University Press:  02 January 2015

Thomas Klein ,
Francisca Mendez-Martin ,
Michael Schachermayer ,
Boryana Rashkova ,
Helmut Clemens  and
Svea Mayer
Thomas Klein
Affiliation:
Department of Physical Metallurgy and Materials Testing, Montanuniversitaet Leoben, Franz-Josef-Str. 18, A-8700 Leoben, Austria.
Francisca Mendez-Martin
Affiliation:
Department of Physical Metallurgy and Materials Testing, Montanuniversitaet Leoben, Franz-Josef-Str. 18, A-8700 Leoben, Austria.
Michael Schachermayer
Affiliation:
Department of Physical Metallurgy and Materials Testing, Montanuniversitaet Leoben, Franz-Josef-Str. 18, A-8700 Leoben, Austria.
Boryana Rashkova
Affiliation:
Department of Physical Metallurgy and Materials Testing, Montanuniversitaet Leoben, Franz-Josef-Str. 18, A-8700 Leoben, Austria.
Helmut Clemens
Affiliation:
Department of Physical Metallurgy and Materials Testing, Montanuniversitaet Leoben, Franz-Josef-Str. 18, A-8700 Leoben, Austria.
Svea Mayer
Affiliation:
Department of Physical Metallurgy and Materials Testing, Montanuniversitaet Leoben, Franz-Josef-Str. 18, A-8700 Leoben, Austria.
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Abstract

The distribution of alloying elements in the constituent phases of a C-containing γ-TiAl based alloy has been characterized locally by atom probe tomography. The major elements of the alloy under consideration – Ti, Al, Nb, and Mo – are distributed uniformly within each of the constituent phases. Furthermore, Mo is preferentially dissolved in the βo-phase, whereas Nb content is similar in all phases. The selected C concentration of the alloy is below the overall solubility limit as no precipitates have been observed. Therefore, C is enriched in the α2-phase, whereas the βo-phase is depleted of C. In addition, βo/γ-interfaces have been prepared by site specific sample preparation and characterized by atom probe tomography. Segregation of Mo and C into the interfaces and their close vicinity was observed.

Keywords

polycrystalgrain boundariesnanoscale
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1760: Symposium YY – Advanced Structural and Functional Intermetallic-Based Alloys , 2015 , mrsf14-1760-yy06-04
Copyright
Copyright © Materials Research Society 2014 

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References

REFERENCES

Clemens, H. and Mayer, S., Adv. Eng. Mater. 15, 191 (2013).CrossRefGoogle Scholar
Clemens, H., Wallgram, W., Kremmer, S., Güther, V., Otto, A., and Bartels, A., Adv. Eng. Mater. 10, 707 (2008).CrossRefGoogle Scholar
Appel, F., Paul, J.D.H., and Oehring, M., Gamma Titanium Aluminide Alloys - Science and Technology (Wiley-VCH, Weinheim, 2011).CrossRefGoogle Scholar
Lavery, N.P., Jarvis, D.J., and Voss, D., Intermetallics 19, 787 (2011).CrossRefGoogle Scholar
Denquin, A., Naka, S., Huguet, A., and Menand, A., Scr. Metall. Mater. 28, 1131 (1993).CrossRefGoogle Scholar
Huguet, A. and Menand, A., Appl. Surf. Sci. 76-77, 191 (1994).CrossRefGoogle Scholar
Menand, A., Huguet, A., and Nérac-Partaix, A., Acta Mater. 44, 4729 (1996).CrossRefGoogle Scholar
Kim, S., Smith, G.D.W., Roberts, S.G., and Cerezo, A., Mater. Sci. Eng. A 250, 77 (1998).CrossRefGoogle Scholar
Larson, D.J. and Miller, M.K., Mater. Sci. Eng. A 250, 65 (1998).CrossRefGoogle Scholar
Gerstl, S.S.A., Kim, Y.-W., and Seidman, D.N., Interface Sci. 12, 303 (2004).CrossRefGoogle Scholar
Miller, M.K. and Russell, K.F., Ultramicroscopy 107, 761 (2007).CrossRefGoogle Scholar
Du, X.-W., Wang, J.N., and Zhu, J., Scr. Mater. 45, 19 (2001).CrossRefGoogle Scholar
Kelly, T.F., Camus, P.P., Larson, D.J., Holzman, L.M., and Bajikar, S.S., Ultramicroscopy 62, 29 (1996).CrossRefGoogle Scholar
Schwaighofer, E., Rashkova, B., Clemens, H., Stark, A., and Mayer, S., Intermetallics 46, 173 (2014).CrossRefGoogle Scholar
Thompson, K., Lawrence, D., Larson, D.J., Olson, J.D., Kelly, T.F., and Gorman, B., Ultramicroscopy 107, 131 (2007).CrossRefGoogle Scholar
Scheu, C., Stergar, E., Schober, M., Cha, L., Clemens, H., Bartels, A., Schimansky, F.-P., and Cerezo, A., Acta Mater. 57, 1504 (2009).CrossRefGoogle Scholar
Schloffer, M., Rashkova, B., Schöberl, T., Schwaighofer, E., Zhang, Z., Clemens, H., and Mayer, S., Acta Mater. 64, 241 (2014).CrossRefGoogle Scholar