In Situ Annealing of Severe Plastic Deformed OFHC Copper

Abstract:

Article Preview

A pure OFHC copper is subjected to severe plastic deformation (SPD) by a well defined high pressure torsion process at ambient temperature. The change in microstructure of samples deformed to different strains, up to ε=64, is investigated in-situ, during annealing at 170°C, within a scanning electron microscope. The spatial distribution of nucleation sites changes significantly with increasing strain from nucleation at triple junctions and grain boundaries to a random distribution of sites for von Mises equivalent strains beyond ε=4. The resulting mean size of recrystallized grains is about 6.75 times larger than the mean microstructural size of the corresponding as-deformed state. For strains larger than ε=16 the recrystallized microstructure appears to be independent of preceding strain. A detailed investigation of the nucleation of recrystallized grains following very large strains shows that certain microstructural elements are favoured as nuclei and were particularly taken into account.

Info:

Periodical:

Materials Science Forum (Volumes 558-559)

Edited by:

S.-J.L. Kang, M.Y. Huh, N.M. Hwang, H. Homma, K. Ushioda and Y. Ikuhara

Pages:

1345-1351

Citation:

S. Scheriau et al., "In Situ Annealing of Severe Plastic Deformed OFHC Copper", Materials Science Forum, Vols. 558-559, pp. 1345-1351, 2007

Online since:

October 2007

Export:

Price:

$38.00

[1] Datasheet: OFHC max. content of impurities. Technical report, Buntmetall Amstetten GmbH, (2005).

[2] Shin DH, Ahn BD, Cho HS and Park KT. In Ultrafine Grained Materials III.

[3] Ito Y Tsuji N and Saito Y. Scripta Materialia, 47: 893, (2002).

[4] Islamgaliev RK Valiev RZ and Alexandrov IV. Progress in Materials Sciences, 45: 103, (2000).

[5] Pak JJ Shin DH and Kim YK. Materials Science Engineering, 323: 409, (2002).

[6] Vorhauer A, Kleber S and Pippan R. Microstructure of austenitic and ferritic steels produced by SPD and subsequent annealing. In Ultrafine grained materials III, page 629, (2004).

[7] Valiev RZ. Advanced Engineering Materials, 5(5): 296, (2003).

[8] Vorhauer A, Rumpf C, Granitzer P, Kleber S, Krenn H and Pippan R. Materials Science Forum, (503-504): 299-304, (2006).

DOI: https://doi.org/10.4028/www.scientific.net/msf.503-504.299

[9] Gleiter H. Acta Mater, (48): 1, (2000).

[10] Humphreys FJ and Hatherly M. Recrystallization and related annealing phenomena, pages 127-392. Pergamon press, (1996).

[11] Prangnell PB Humphreys FJ and Bowen JR. Phil. Trans R. Soc Lond. A, 357: 1663, (1999).

[12] Bailey JE and Hirsch PB. Proc Roy Soc A, (267): 11, (1962).

[13] Bellier JE and Doherty RD. Acta Metall, (25): 521, (1977).

[14] Engler O. Metall Mater Trans A, (30): 1517, (1999).

[15] Engler O. Acta Mater, (49): 1237, (2002).

[16] Randel V and Engler O. Introduction to Texture Analysis: Macrotexture, Microtexture and Orientation Mapping. Gordon and Breach Science Publishers, Amsterdam, (2000).

[17] Wright SI Adams BL and Kunze K. Metall Trans A, (24): 819, (1993).

[18] Humphreys FJ. Acta Materialia, (45): 4231-4240, (1997).

[19] Humphreys FJ and Harterly M. Recrystallization and related phenomena. Pergamon Press, (2003).

[20] Tarasiuk J Gerber Ph and Chauveau Th. Acta Mater, (51): 6359, (2003).

[21] Hughes DA and Hansen N. Acta Metallurgica, (45): 3871, (1997).

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