Annealing of Deformed Materials Developed by Continuous/Discontinuous Dynamic Recrystallization

Abstract:

Article Preview

Annealing behaviour was studied in deformed copper developed by continuous or discontinuous dynamic recrystallization (cDRX or dDRX). Pure copper was deformed to large strains by multi-directional forging at room temperature, resulting in an ultra-fine grained structure due to operation of cDRX. Subsequent annealing of such a fine-grained copper can be controlled mainly by grain growth accompanied with recovery and no texture change, that is continuous static recrystallization (cSRX). On the other hand, 4 kinds of static restoration processes operate during annealing of dDRXed copper, i.e. metadaynamic recovery and recystallization (mDRV and mDRX), and classical static recovery and recrystallization. The stable existence of mDRVed grains containing moderate dislocations leads to incomplete recrystallization even after a long period of annealing time. It is discussed how such various types of annealing processes, occurring in cDRXed or dDRXed matrices, can be connected with the characteristic nature of the deformed microstructures.

Info:

Periodical:

Edited by:

P. B. Prangnell and P. S. Bate

Pages:

327-332

Citation:

T. Sakai and H. Miura, "Annealing of Deformed Materials Developed by Continuous/Discontinuous Dynamic Recrystallization", Materials Science Forum, Vol. 550, pp. 327-332, 2007

Online since:

July 2007

Export:

Price:

$38.00

[1] F.J. Humphreys and M. Hatherly, Recrystallization and related annealing phenomena (Elsevier, oxford 2004), p.1.

[2] T. Sakai and J. J. Jonas; Encyclopedia of Materials: Science and Technology, eds. K. H. Buschow et al., Elsevier, Oxford, Vol. 7 (2001), p.7079.

[3] A. Belyakov, T. Sakai, H. Miura and K. Tsuzaki: Philos. Mag. A, Vol. 81 (2001), p.2629.

[4] R.Z. Valiev, R.K. Islamgaliev and I.V. Alexandrov: Prog. Mater. Sci., Vol. 45 (2000), p.103.

[5] A. Belyakov, T. Sakai, H. Miura, R. Kaibyshev and K. Tsuzaki: Acta Mat., Vol. 50 (2002), p.1547.

[6] X. Yang, H. Miura and T. Sakai: Mater. Trans. Vol. 46 (2005), p.2981.

[7] T. Sakai: Ultrafine Grained Materials IV., eds. Y.T. Zhu, et al., TMS (2006), p.73.

[8] T. Sakai and J. J. Jonas: Acta Metall., Vol. 32 (1984), p.189.

[9] T. Sakai: Recrystallization and Related Phenomena (ReX'96), ed. T.R. McNelley, (MIAS, Monterey, 1997), p.137.

[10] T. Sakai, M. Ohashi, K. Chiba and J.J. Jonas: Acta Metall., Vol. 36 (1988), p.1781.

[11] R.A. Petkovic, M.J. Luton and J.J. Jonas, Acta Metall., Vol. 27 (1979), p.1633.

Fetching data from Crossref.
This may take some time to load.