Effect of the Degree of Order and the Deformation Microstructure on the Kinetics of Recrystallisation in a Fe3Al Ordered Alloy

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Abstract:

A Fe3Al based single phase alloy was rolled at 600 °C and 400 °C and the kinetics of recrystallisation in A2 and B2 phase regions was determined in conjunction with the kinetics of the A2-B2 ordering and recovery. At 700°C and 800°C the recrystallisation kinetics depends strongly on the temperature of rolling while at 900°C only a small influence is visible. These results are attributed to the high stored energy in the sample rolled at 400 °C and its high recovery rate at 900 °C, leading to a similar level in stored energy as for the sample rolled at 600 °C in the beginning of annealing. At lower temperatures, in contrast, the difference in stored energy is conserved over longer times in the annealing process. Almost half the apparent activation energy was observed in the ordered state compared to that in the disordered state.

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Materials Science Forum (Volumes 467-470)

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153-158

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October 2004

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© 2004 Trans Tech Publications Ltd. All Rights Reserved

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[1] C. G. MacKamey and D. H. Pierce: Scripta Metall. Vol. 28 (1993), p.1173.

Google Scholar

[2] D. G. Morris and S. Gunter: Intermetallics Vol. 3 (1995), p.483.

Google Scholar

[3] Y. D. Huang and L. Froyen: Intermetallics Vol. 10 (2002), p.473.

Google Scholar

[4] S. Kobayashi, S. Zaefferer, A. Schneider, D. Raabe and G. Frommeyer: in review.

Google Scholar

[5] S. M. Kim and D. G. Morris: Acta Mater. Vol. 46, No. 8 (1998), p.2587.

Google Scholar

[6] R. W. Cahn, M. Takeyama, J. A. Horton and C. T. Liu: J. Mater. Res. Vol. 6, (1991), p.57.

Google Scholar

[7] W. B. Hutchinson, F. M. C. Besag and C. V. Honess: Acta Metall. Vol. 21 (1973), p.1685.

Google Scholar

[8] R. A. Buckley: Metal Science (1979), p.67.

Google Scholar

[9] F. J. Humphreys and M. Hatherly: Recrystallization and related annealing phenomina, (Elsevier Science Ltd, UK, 1995).

Google Scholar

[10] R. C. Sun and C. L. Bauer: Acta Metall. Vol. 18 (1970), p.639 Journal Title and Volume Number (to be inserted by the publisher) 7.

Google Scholar

[11] E. M. Fridman, C. V. Kopezky and L. S. Shvindlerman: Z. Metallk. Vol. 66, (1975), p.533.

Google Scholar