Room Temperature Recovery in Rolled Polycrystalline Copper after many Years

Abstract:

Eight years ago recrystallization of OFE (oxygen-free electronic) copper was examined in detail using various techniques. In 2008 exactly the same material was measured using EBSD microscopy. The deformed state and fully recrystallized state have been analyzed and compared with data obtained eight years ago. The stored energy (SE) estimated by Image Quality (IQ) analysis was compared in these two cases. A significant amount of recovery took place in the sample, but only in some texture components. Some others present more or less the same SE as eight years ago. The textures of recrystallized samples were compared. We observed that the difference in SE distribution between the two deformed state has an influence on the final textures after recrystallization. Our study confirms the hypothesis that if a grain (orientation) has distinctly lower SE than other orientations - it has the highest growth preference (threshold hypothesis). Such grains (orientations) are dominant in the recrystallization texture.

• Periodical: Materials Science Forum (Volumes 715-716)
• Pages: 758-763
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.715-716.758
• Online since: April 2012
• Authors: Jacek Tarasiuk, Brigitte Bacroix, Krzysztof Wierzbanowski, Sebastian Wroński, P. Gerber
• Keywords: Copper, EBSD, Recovery, Recrystallization, Room Temperature, Texture

References

[1] Ph. Gerber, J. Tarasiuk, B. Bacroix, T. Chauveau, R. Chiron, Experimental investigations of recrystallization mechanisms in copper alloys, Proc. of the First Joint Intern. Conf. on Recrystallization and Grain Growth (ReX & GG), p.767, Aachen, Germany (2001).

DOI: 10.1051/metal:2003214

[2] J. Tarasiuk, Ph. Gerber, B. Bacroix and K. Piekos. Modeling of Recrystallization Using Monte Carlo Method Based on EBSD Data, Materials Science Forum, vol. 408-412 (2002), p.395.

DOI: 10.4028/www.scientific.net/msf.408-412.395

[3] K. Piękoś, J. Tarasiuk, K. Wierzbanowski and B. Bacroix, Generalized vertex model of recrystallization – Application to Polycrystalline Copper, Comp. Mat. Sci., 42 (2008), p.584.

DOI: 10.1016/j.commatsci.2007.09.014

[4] K. Piękoś, J. Tarasiuk, K. Wierzbanowski and B. Bacroix, Stochastic vertex model of recrystallization, Comp. Mat. Sci., 42 (2008), p.36.

DOI: 10.1016/j.commatsci.2007.06.005

[5] O. Engler, In: Proc. 19-th Risö Int. Symp. on Mat. Sc., Risö, Roskilde, Denmark (1998).

[6] Ph. Gerber, J. Tarasiuk, Th. Chauveau, B. Bacroix, A quantitative analysis of the evolution of texture and stored energy during annealing of cold rolled copper, Acta Materialia, 51 (2003), p.6359.

DOI: 10.1016/j.actamat.2003.08.039