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Structure and Energy of Grain Boundaries in Metals

Published online by Cambridge University Press:  29 November 2013

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The investigation of structure-property correlations is a rather complex endeavor not only because interfacial Systems are intrinsically inhomogeneous, with chemical composition and physical properties differing from the surrounding bulk material, but also since three different aspects of the geometrical structure are involved — namely the macroscopic, microscopic, and atomic structures. As outlined in the Guest Editors' introduction, in addition to the choice of the materials which form the interface, five macroscopic and three microscopic degrees of freedom (DOFs) are needed to characterize a single bicrystalline interface. The importance of the atomic structure at the interface as well as the local interfacial chemistry, extrinsic (i.e., impurity segregation) or intrinsic (for example, via interfacial reactions or space-charge phenomena), greatly add to the task's complexity.

Grain boundaries (GBs) in pure metals represent ideal model Systems for investigating the strictly geometrical aspects of structure-property correlations for the following three reasons. First, the complexity due to the myriad of possible choices of materials combinations forming the interface is avoided, enabling a focus on the different roles of the three distinct geometrical aspects of the structure. Second, because GBs are bulk interfaces, dimensional interface parameters (such as the modulation wavelength in strained-layer superlattices, or the thickness of epitaxial layers) do not enter into the problem. Finally, the GB energy is thought to play a central role in various GB properties, such as impurity segregation, GB mobility and fracture, GB diffusion and cavitation, to name a few. A better understanding of the correlation between the structure and energy of GBs, therefore, promises to offer insights into more complex structure-property correlations, as well.

Type
Interfaces Part I
Copyright
Copyright © Materials Research Society 1990

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References

1. See, for example, Goux, C., Can. Metall. Quarterly 13 (1974) p. 9.CrossRefGoogle Scholar
2. See, for example, Bollmann, W., Crystal Defects and Crystalline Interfaces (Springer Verlag, New York, 1970).CrossRefGoogle Scholar
3.Wolf, D., J. de Physique 46 (1985) p. 197.CrossRefGoogle Scholar
4.Wolf, D. and Lutsko, J.F., Z. Kristallographie 189 (1989) p. 239.Google Scholar
5.Wolf, D., Acta Metall. 38 (1990) p. 781; Acta Metall. 38 (1990). p. 791.CrossRefGoogle Scholar
6.Daw, M.S. and Baskes, M.I., Phys. Rev. B 33 (1986) p. 7983.Google Scholar
7.Balluffi, R.W. and Maurer, R., Scripta Metall. 22 (1988) p. 709.CrossRefGoogle Scholar
8.Wolf, D. and Phillpot, S.R., Mater. Sci. Eng. A 107 (1988) p. 3.CrossRefGoogle Scholar
9.Read, W.T. and Shockley, , Phys. Rev. 78 (1950) p. 275.CrossRefGoogle Scholar
10.Wolf, D., Scripta Metall. 23 (1989) p. 1713, Scripta Metall. 23 (1989). 1913.CrossRefGoogle Scholar
11.Schober, T. and Balluffi, R.W., Phil. Mag. 21 (1970) p. 109.CrossRefGoogle Scholar
12.Tan, T.Y., Hwang, J.C.M., Goodhew, P.J., and Balluffi, R.W., Thin Solid Films 33 (1976) p. 1.CrossRefGoogle Scholar
13.Merkle, K.L., in Proceedings of the 46th Annual Meeting of EMSA, edited by Bailey, G. W. (1988) p. 588.Google Scholar
14.Wolf, D., J. Mater. Res. MS #90-029, Vol. 5 #8, p. 1708.CrossRefGoogle Scholar
15.Wolf, D., Surf. Sci. 226 (1990) p. 389.CrossRefGoogle Scholar
16.Merkle, K.L., Colloque de Phys. 51 C1 (1990) p. 251.Google Scholar
17.Merkle, K.L. and Smith, D.J., Phys. Rev. Lett. 59 (1987) p. 2887.CrossRefGoogle Scholar
18.Seeger, A. and Schottky, G., Acta Metall. 7 (1959) p. 495.CrossRefGoogle Scholar
19.Merkle, K.L., Scripta Metall. 23 (1989) p. 1487.CrossRefGoogle Scholar
20.Cosandey, F., Chan, S-W., and Stadelmann, P., Colloque de Phys. 51 C1 (1990) p. 109.Google Scholar
21.Merkle, K.L., in Interfaces between Polymers, Metals, and Ceramics, edited by DeKoven, B.M., Gellman, A.J., and Rosenberg, R. (Mat. Res. Soc. Symp. Proc. 153, Pittsburgh, PA, 1989) p. 83.Google Scholar
22.Wolf, D., J. Appl. Phys. (in press).Google Scholar
23. For a recent comprehensive review, see Gleiter, H., in Atomistics of Fracture, edited by Latanision, R.M. and Pickens, J.R. (Plenum, New York, 1983) p. 433.CrossRefGoogle Scholar