Phase-Separation of B2 Precipitates in an Fe-Ni-Al Alloy

Yasuhiro Kuno; Yasuo Nakane; Takao Kozakai; Minoru Doi; Junji Yamanaka; Chiaya Yamamoto; Shizuo Naito

doi:10.4028/www.scientific.net/MSF.638-642.2274

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HomeMaterials Science ForumMaterials Science Forum Vols. 638-642Phase-Separation of B2 Precipitates in an Fe-Ni-Al...

Phase-Separation of B2 Precipitates in an Fe-Ni-Al Alloy

Abstract:

When Fe-10.3mol%Ni-14.3mol%Al alloy is heated at 1173 K for 8.64104 s, a number of B2 precipitates are dispersed in the A2 matrix. When the two-phase microstructure of A2+B2 is aged at 973 K, the phase-separation of B2 precipitate particles takes place to form a new A2 phase in each B2 particle. In the course of further ageing at 973 K, the new A2 phase grows but decreases in number, and finally only one A2 particle is left in the individual B2 particles. The appearance of new A2 phase in each B2 precipitate is due to the difference in the volume fraction of A2 phase that should exist in A2+B2 two-phase system depending on the heating temperature: i.e., the phase-separation of B2 precipitates starts with the aid of chemical free energy.

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Materials Science Forum (Volumes 638-642)

Pages:

2274-2278

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.638-642.2274

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Online since:

January 2010

Authors:

Yasuhiro Kuno, Yasuo Nakane, Takao Kozakai, Minoru Doi, Junji Yamanaka, Chiaya Yamamoto, Shizuo Naito

Keywords:

B2 Phase, Phase Transformation, Precipitate Morphology

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References

[1] A.G. Khachaturyan: Theory of Structural Transformations in Solids (John Wiley & Sons, NY 1983).

Google Scholar

[2] M. Doi: Prog. Mater. Sci. Vol. 40 (1996), p.79.

Google Scholar

[3] P. Fratzl, O. Penrose and J.L. Lebowitz: J. Stat. Phys. Vol. 95 (1999), p.1429.

Google Scholar

[4] M. Doi: Mater. Trans., JIM Vol. 33 (1992), p.637.

Google Scholar

[5] M. Doi, T. Miyazaki and T. Wakatsuki: Mater. Sci. Eng. Vol. 67 (1984), p.247.

Google Scholar

[6] M. Doi, Y. Inagawa, T. koyama and T. Miyazaki: Philos. Mag. Lett. Vol. 3 (1996), p.331.

Google Scholar

[7] M. Doi, T. Miyazaki, S. Inoue and T. Kozakai, in: Dynamics of Ordering Processes in Condensed Matter, edited by S. Komura and H. Furukawa, Plenum Press, NY (1988), p.287.

Google Scholar

[8] T. Maebashi and M. Doi: Mater. Sci. Eng. A Vol. 373 (2004), p.72.

Google Scholar

[9] M. Doi, D. Miki, T. Moritani and T. Kozakai, in: Superalloys 2004, edited by K.A. Green et al., TMS, Warrendale, PA (2004), p.109.

Google Scholar

[10] M. Doi, T. Moritani, T. Kozakai and M. Wakano: ISIJ Inter. Vol. 46 (2006), p.155.

Google Scholar