Sensitivity to Fatigue Cracks Initiation of Symmetrical <110>Tilt Grain Boundaries in Pure Copper Bicrystals in 1M NaNO2 Solution


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Sensitivity to corrosion fatigue (CF) crack initiation has been investigated in a series of pure copper bicrystals with a symmetrical <110>-tilt grain boundary. Tests were performed by axial tension-compression tests in 1M NaNO2 solutions. The small-angle tilt bicrystals fractured in both intergranular and transgranular manners accompanied by a large amount of plastic strain to fracture while the large-angle bicrystals fractured in almost intergranular manner with a smaller plastic strain. Susceptibility to CF cracks increases with increasing misorientation. It seems that effect of grain boundaries structures, i.e., Σ-values is small in this experiment. Stress concentration generated by the pile-up of trapped dislocations at the grain boundary could account for the high susceptibility of the intergranular cracks in large-angle grain boundaries



Materials Science Forum (Volumes 561-565)

Main Theme:

Edited by:

Young Won Chang, Nack J. Kim and Chong Soo Lee




H. Miyamoto et al., "Sensitivity to Fatigue Cracks Initiation of Symmetrical <110>Tilt Grain Boundaries in Pure Copper Bicrystals in 1M NaNO2 Solution", Materials Science Forum, Vols. 561-565, pp. 2415-2418, 2007

Online since:

October 2007




[1] M. Yamashita, T. Mimaki, S. Hashimoto, and S. Miura, Phil. Mag, A 63, 707 (1991).

[2] A. Roy, U. Erb, and H. Gleiter; Acta Metall., 30, 1847 (1982).

[3] Y. Pan, B. L. Adams, T. Olson, and N. Panayotou, Acta mater., 44, 4685 (1996).

[4] K.T. Aust, U. Erb, and G. Palumbo, Mater. Sci. Eng., A176, 329 (1994).

[5] D.C. Crawford and G.S. Was, Metall. Trans., 23A, 1195 (1992).

[6] S.P. Pednekar, A. K. Agrawal, H.E. Chaung, and R.W. Staehle, J. Electrochem. Soc. 126, 701 (1979).

[7] K. Sieradzki, R. L. Sabatini, et al. Metal. Trans. 15, 1941 (1984).

[8] T. Mimaki, Y. Nakazawa, S. Hashimoto, and S. Miura, Metall. Trans., 21A, 2355 (1990).

[9] T. Mimaki, M. Yamashita, S. Hashimoto and S. Miura, Proc. 6th Int. Conf. on Mechanical Behaviour Materials-Ⅵ, Kyoto, ed. M. Jono and T. Inoue, Pergamon press, 663 (1991).

[10] H. Miyamoto, H. Koga, T. Mimaki and S. Hashimoto, Interface Science 9 281-286 (2001).

[11] W. Liu, M. Bayerlein, H. Mughrabi, A. Day, P.N. Quested, Acta Metall. Mater., 40, 1763 (1992).

[12] A.N. Stroh; Proc. Roy. Soc., A223, 404 (1954).

[13] M. Yamashita, K. Shimazaki, and T. Mimaki, Sci. Eng. Rev. Doshisha Univ. 34, 1 (1993).

[14] W.J. Flanagan, P. Bastlas, and B.D. Lichter, Acta mater., 39, 695 (1991).