Abstract
Ag grain boundary (GB) diffusion was measured in the Cu-0.2at%Ag alloy in a wide temperature range from 473 to 970 K. The direct measurements of Ag GB diffusivity D alloy gb under conditions of the Harrison C regime revealed that D alloy gb is almost identical to D pure gb determined earlier for Ag diffusion in high-purity Cu (Divinski, Lohmann, and Herzig, 2001). The penetration profiles determined in the Harrison B regime showed a complex, multi-stage shape. This diffusion behavior can be rationalized assuming that besides GBs significantly covered by segregated Ag atoms, some fraction of GBs remains almost free from Ag atoms in the studied temperature interval. The total amount of “pure” GBs drastically decreases with decreasing temperature. This hypothesis was proven by measurements of Ag GB diffusion in Cu near Σ5 bicrystals, which allowed us to analyze in detail the non-linear segregation of Ag in Cu GBs.
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References
L.G. Harrison, Trans. Faraday Soc. 57, 597 (1961).
I. Kaur, Y. Mishin, and W. Gust, Fundamentals of Grain and Interface Boundary Diffusion (Wiley, Chichester, New York, 1995).
Chr. Herzig, J. Geise, and Y. Mishin, Acta Metall. Mater. 41, 1683 (1993).
T. Surholt, Y. Mishin, and Chr. Herzig, Phys. Rev. B 50, 3577 (1994).
T. Surholt, C. Minkwitz, and Chr. Herzig, Acta Mater. 46, 1849 (1998).
S.V. Divinski, M. Lohmann, and Chr. Herzig, Acta Mater. 49, 249 (2001).
P. Gas, D.L. Beke, and J. Bernardini, Phil. Mag. Lett. 65, 133 (1992).
J. Sommer and Chr. Herzig, J. Appl. Phys. 72, 2758 (1992).
B.S. Bokstein, V.E. Fradkov, and D.L. Beke, Phil. Mag. A 65, 277 (1992).
Y. Mishin and Chr. Herzig, J. Appl. Phys. 73, 8206 (1993).
B. Bokstein, A. Ostrovsky, and J. Bernardini, Mater. Science Forum. 294-296, 581 (1999).
F. Güthoff, Y. Mishin, and Chr. Herzig, Z. Metallkd. 84, 584 (1993).
D.L. Beke, I. Gödény, G. Erdélyi, W. Lojkowski, Cs. Cserháti, and F.J. Kedves, Defect Diff. Forum. 66-69, 581 (1989).
D. Gupta, Defect Diff. Forum. 156, 43 (1998).
G. Barreau, G. Brunel, G. Cizeron, and P. Lacombe, C.R. Acad. Sci. (Paris) C 270, 516 (1970).
T. Suzuoka, J. Phys. Soc. Japan 19, 839 (1964).
S.V. Divinski, M. Lohmann, T. Surholt, and Chr. Herzig, Interface Science 9, 357 (2001).
S.V. Divinski, M. Lohmann, and Chr. Herzig, Defect Diff. Forum 213, 101 (2003).
E. Budke, T. Surholt, S.I. Prokofjev, L.S. Schvindlerman, and Chr. Herzig, Acta Mater. 47, 385 (1999).
J. Bernardini, Zs. Tökei, and D.L. Beke, Phil Mag. A 73, 237 (1996).
V.J. Keast and D.B. Williams, Acta Mater. 47, 3999 (1999).
T. Surholt and Chr. Herzig, Acta Metall. 45, 3817 (1997).
J.L. Murray, Metall. Trans. A 15, 261 (1984).
J. Bernardini and G. Martin, Scr. Metall. 10, 833 (1976).
D. McLean, Grain Boundaries in Metals (Clarendon Press, Oxford, 1957).
F. Berthier, B. Legrand, and G. Tréglia, Acta Mater. 47, 2705 (1999).
J. Creuze, F. Berthier, R. Tétot, B. Legrand, and G. Treglia, Phys. Rev. B 61, 14470 (2000).
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Divinski, S., Lohmann, M. & Herzig, C. Grain Boundary Diffusion and Linear and Non-Linear Segregation of Ag in Cu. Interface Science 11, 21–31 (2003). https://doi.org/10.1023/A:1021522620571
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DOI: https://doi.org/10.1023/A:1021522620571