A Study of the Early Stages of Recovery in Cold Rolled {110}<001> Oriented Copper Single Crystals

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Copper single crystals of {110}<001> crystallographic orientation were cold rolled to a true strain of 1.4. Specimens were cut from the as-deformed crystals with all surfaces mechanically ground and deep-etched in concentrated nitric acid to minimise the likelihood of surface nucleation of recrystallized grains during subsequent annealing. The early stages of static recovery were studied by annealing specimens at 300 oC. The crystallographic features of the deformed and annealed microstructures were determined by high resolution electron backscatter diffraction. It was observed that deformation was homogeneous with the microstructure in ND-RD plane exhibiting two complementary sets of intersecting bands at ~+ 35o to ND. Along these bands and in the microstructure, in general, there was an overall spread in orientation about ND towards {110}<112>. However, the orientation spread along these bands was cyclic, that is, sinusoidal orientation gradients were generated about ND with amplitude of up to 20o and wavelength 5-10 µm. Annealing resulted in the preferred growth of cells that have orientations at the edge of the orientation spread of the deformation substructure. This localized coarsening of the microstructure is similar to the discontinuous subgrain growth observed in {110}<001> oriented Al single crystals and indicates that discontinuous subgrain (cellular) growth can also occur in metals of lower stacking fault energy.

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Periodical:

Materials Science Forum (Volumes 495-497)

Edited by:

Paul Van Houtte and Leo Kestens

Pages:

761-766

DOI:

10.4028/www.scientific.net/MSF.495-497.761

Citation:

M. Ferry and J. F. Humphreys, "A Study of the Early Stages of Recovery in Cold Rolled {110}<001> Oriented Copper Single Crystals ", Materials Science Forum, Vols. 495-497, pp. 761-766, 2005

Online since:

September 2005

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$38.00

[1] Humphreys FJ, Hatherly M. Recrystallization and Related Annealing Phenomena, 2nd edition. Pergamon Press, Oxford, UK; (2004).

[2] Ferry M, Humphreys FJ. Acta Mater 1996; 44; 1293.

[3] Ferry M, Humphreys FJ. Acta Mater 1996; 44; 3089.

[4] Huang Y, Humphreys FJ. Acta Mater 2000; 48; (2017).

[5] Huang Y, Humphreys FJ. Mater Charact 2001; 47; 235.

[6] Huang Y, Humphreys FJ, Ferry M. Acta Mater 2000; 48; 2543.

[7] Huang Y, Humphreys FJ, Ferry M. Mater Sci Tech 2000; 16; 1367.

[8] Stanford N, Dunne D, Ferry M. Acta Mater 2003; 51; 665.

[9] Humphreys FJ. Acta Mater 1997; 45; 4231.

[10] Humphreys FJ. Acta Mater 1997; 45; 5031.

[11] Ferry, M. Mater Sci Forum 2002; 408-412; 979.

[12] Humphreys FJ. VMAP handbook. UMIST; (2002).

[13] Humphreys FJ. J Mat Sci 2001; 36; 3833.

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