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Effect of Third Elements on Pseudoelastic Behavior in Fe3Al Single Crystals

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Abstract:

The pseudoelastic behavior of Fe3Al single crystals doped with an extra element (e.g. Ti, V, Cr, Mn, Co, Ni, Si, Ga, Ge) was investigated. In binary Fe-23.0at.%Al crystals with the D03 structure, 1/4[111] superpartial dislocations moved independently dragging the nearest-neighbor anti-phase boundaries (NNAPB) during loading. During unloading, the NNAPB pulled back the superpartials decreasing its energy resulting in a giant pseudoelasticity of which the recoverable strain is about 5 %. Addition of a third element significantly affected the pseudoelastic behavior of Fe3Al single crystals. Mn- or Ga-doped crystal demonstrated a giant pseudoelasticity. In particular, Ga-doping was found to be effective in the enhancement of the pseudoelasticity. On the other hand, the amount of strain recovery decreased upon doping of the other elements. The frictional stress of the superpartials, the back stress of the NNAPB and ordered domain structure in the crystals changed upon doping, which was closely related to the pseudoelastic behavior.

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Periodical:

Materials Science Forum (Volumes 561-565)

Pages:

391-394

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.561-565.391

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Online since:

October 2007

Authors:

Hiroyuki Y. Yasuda, T. Kase, S. Minamiguchi, A. Yokoyama, Yukichi Umakoshi, P.M. Bronsveld, Jeff T.M. de Hosson

Keywords:

Antiphase Boundary (APB), Dislocation, Iron Aluminide, Pseudoelasticity

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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References

[1] K. Otsuka and C. M. Wayman, Shape Memory Materials (Cambridge University Press, 1998).

Google Scholar

[2] J. Y. Guedou, M. Paliard and J. Rieu, Scripta Metall., Vol. 10 (1976), p.631.

Google Scholar

[3] L. P. Kubin, A. Fourdeux, J. Y. Guedou and J. Rieu, Phil. Mag., Vol. A46 (1982), p.357.

Google Scholar

[4] A. Brinck, C. Engelke and H. Neuhäuser, Scripta Metall., Vol. 37 (1997), p.569.

Google Scholar

[5] E. Langmaack and E. Nembach, Phil. Mag., Vol. A79 (1999), p.2359.

Google Scholar

[6] H. Y. Yasuda, K. Nakano, T. Nakajima, M. Ueda and Y. Umakoshi, Acta Mater., Vol. 51 (2003), p.5101.

Google Scholar

[7] H. Y. Yasuda, T. Nakajima, K. Nakano, K. Yamaoka, M. Ueda and Y. Umakoshi, Acta Mater., Vol. 53, (2005), p.5343.

Google Scholar

[8] M. J. Marcinkowski and N. Brown, Acta Metall., Vol. 9 (1961), p.764.

Google Scholar

[9] H.Y. Yasuda, T. Nakajima and Y. Umakoshi, Intermetallics, Vol. 15 (2007), p.819.

Google Scholar

[10] S. Zuqing, Y. Wangyue, S. Lizhen, H. Yuanding, Z. Baisheng and Y. Jilian, Mater. Sci. Eng., Vol. A258 (1998), p.69.

DOI: 10.1016/s0921-5093(98)00919-8

Google Scholar

[11] K. Yoshimi, H. Terashima and S. Hanada, Mater. Sci. Eng., Vol. A194 (1995), p.53.

Google Scholar