Hostname: page-component-78c5997874-xbtfd Total loading time: 0 Render date: 2024-11-17T19:12:45.314Z Has data issue: false hasContentIssue false
  • English
  • Français

Toward Optimization of the Grain Boundary Character Distribution in Copper by Strain Annealing

Published online by Cambridge University Press:  10 February 2011

Wayne E. King  and
Adam J. Schwartz
Wayne E. King
Affiliation:
Chemistry and Materials Science Directorate, University of California, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA
Adam J. Schwartz
Affiliation:
Chemistry and Materials Science Directorate, University of California, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA
Get access

Abstract

We have used a two-step (low and high temperature) strain-annealing process to evolve the grain boundary character distribution (GBCD) in fully recrystallized oxygen-free electronic (OFE) Cu bar that was forged and rolled. Orientation imaging microscopy (OIM)[1–4] has been used to characterize the GBCD after each step in the processing. The fraction of special grain boundaries, “special fraction,” was ∼70% in the starting recrystallized material. Three different processing conditions were employed: high, moderate, and low temperature. The high-temperature process resulted in a reduction in the fraction of special grain boundaries while both of the lower temperature processes resulted in an increase in special fraction up to 85%. Further, the lower temperature processes resulted in average deviation angles from exact misorientation, for special boundaries, that were significantly smaller than observed from the high temperature process. Results indicate the importance of the low temperature part of the two-step strain-annealing process in preparing the microstructure for the higher temperature anneal and commensurate increase in the special fraction.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 458: Symposium W – Interfacial Engineering for Optimized Properties , 1996 , 53
Copyright
Copyright © Materials Research Society 1997

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Mason, T. A. and Adams, B. L., JOM-Journal of the Minerals Metals & Materials Society, 46, p. 43–45 (1994)Google Scholar
2. Adams, B. L., Materials Science and Engineering A-Structural Materials Properties Micro-structure and Processing, 166, p. 59–66 (1993)Google Scholar
3. Adams, B. L., Wright, S. I. and Kunze, K., Metallurgical Transactions A-Physical Metallurgy and Materials Science, 24, p. 819–831 (1993)Google Scholar
4. Doherty, R. D., Samajdar, I. and Kunze, K., Scripta Metallurgica et Materialia, 27, p. 1459–1464(1992)Google Scholar
5. Lassila, D. H., private communication.Google Scholar
6. Lassila, D. H., Baker, E. L., Chan, D. K., King, W. E. and Schwartz, A. J., in 16th International Symposium on Ballistics, (in press, 1996)Google Scholar
7. Aust, K. T., Erb, U. and Palumbo, G., Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing, 176, p. 329–334 (1994)Google Scholar
8. Avramoviccingara, G., Aust, K. T., Perovic, D. D., Palumbo, G. and Mcqueen, H. J., Canadian Metallurgical Quarterly, 34, p. 265–273 (1995)Google Scholar
9. Cheung, C., Erb, U. and Palumbo, G., Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing, 185, p. 39–43 (1994)Google Scholar
10. Lim, L. C. and Watanabe, T., Acta Metallurgica et Materialia, 38, p. 2507–2516 (1990)Google Scholar
11. Palumbo, G., King, P. J., Aust, K. T., Erb, U. and Lichtenberger, P. C., Scripta Metallurgica et Materialia, 25, p. 1775–1780 (1991)Google Scholar
12. Palumbo, G. and Aust, K. T., Canadian Metallurgical Quarterly, 34, p. 165–173 (1995)Google Scholar
13. Watanabe, T., Textures and Microstructures, 14, p. 739–744 (1991)Google Scholar
14. Watanabe, T., Scripta Metallurgica et Materialia, 27, p. 1497–1502 (1992)Google Scholar
15. Thompson, C. B. and Randle, V., in 1996 MSA Annual Meeting, edited by Bailey, G. W., Corbett, J. M., Dimlich, R. V. W., Michael, J. R. and Zaluzec, N. J. (San Francisco Press, Inc. 1996), p. 356–357.Google Scholar
16. Watanabe, T., Materials Science and Engineering A-Structural Materials Properties Micro-structure and Processing, 166, p. 11–28 (1993)Google Scholar
17. Watanabe, T., Textures and Microstructures, 20, p. 195–216 (1993)Google Scholar
18. Orientation Imaging Microscopy Software Version 2.0 User Manual, TSL, Inc., Provo, UT, 1996, pp. 3–5.Google Scholar
19. Brandon, D. G., Acta Metall, 14, p. 1479 (1966)Google Scholar
20. Adams, B. L., Zhao, J. and Grimmer, H., Acta Crystallographica Section A-Foundations of Crystallography, 46, p. 620–622 (1990)Google Scholar
21. Randle, V. and Ralph, B., Mat. Res. Soc. Symp. Proc, 122, p. 419–424 (1988)Google Scholar