Abstract
The grain boundaries of a polycrystal play an important role in deformation processes, particularly under conditions of high-temperature creep. Firstly, the boundaries act as sources and sinks for vacancies, so that diffusional creep may occur by vacancy flow. Secondly, grain boundary sliding may occur under conditions where diffusional creep is relatively unimportant.
The various grain boundary deformation processes are reviewed, and the experimental procedures available for measurements of grain boundary sliding are described in detail. The few direct measurements reported for sliding in polycrystalline non-metals are summarized, and it is demonstrated that there is a considerable need for further work in this area. A new form of deformation mechanism map is presented which is simple to construct and which graphically illustrates the occurrence of grain boundary deformation processes.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
T.G. Langdon, “Grain Boundary Sliding during Creep of MgO,” submitted for publication in J. Amer. Ceram. Soc.
T.G. Langdon, The Microstructure and Design of Alloys, Proc. Third Intl. Conf. on Strength of Metals and Alloys, The Institute of Metals and The Iron and Steel Institute, London, Vol. 1, pp. 222–26, 1973.
T.G. Langdon, Phil. Mag. 22, 689–700 (1970).
F.R.N. Nabarro, Report of a Conference on Strength of Solids, The Physical Society, London, pp. 75–90, 1948.
C. Herring, J. Appl. Phys. 21, 437–45 (1950).
R.L. Coble, J. Appl. Phys. 34, 1679–82 (1963).
R.C. Gifkins and T.G. Langdon, Scripta Met. 4, 563–66 (1970).
T.G. Langdon, Rate Processes in Plastic Deformation, Proc. John E. Dorn Memorial Symposium, Cleveland, Ohio, 1972 (in press).
R. Raj and M.F. Ashby, Met. Trans. 2, 1113–27 (1971).
R.L. Bell, C. Graeme-Barber and T.G. Langdon, Trans. TMS-AIME 239, 1821–24 (1967).
T.G. Langdon, Met. Trans. 3, 797–801 (1972).
T.G. Langdon, J. Amer. Ceram. Soc. 55, 430–31 (1972).
T.G. Langdon and R.L. Bell, Trans. TMS-AIME 242, 2479–84 (1968).
R.L. Bell and T.G. Langdon, Interfaces Conference, R.C. Gifkins, ed., Butterworths, Sydney, pp. 115–37, 1969.
R.C. Gifkins, A. Gittins, R.L. Bell and T.G. Langdon, J. Mater. Sci. 3, 306–13 (1968).
R.L. Bell and T.G. Langdon, J. Mater. Sci. 2, 313–23 (1967).
W.R. Cannon, Ph.D. thesis, Department of Materials Science, Stanford University, 1971.
H.C. Heard and C.B. Raleigh, Geol. Soc. Amer. Bull. 83, 935–56 (1972).
J.H. Hensler and G.V. Cullen, J. Amer. Ceram. Soc. 50, 584–85 (1967).
J.H. Hensler and G.V. Cullen, Final Technical Report, AAEC Research Contract No. 64/D/13, Industrial Research Section, Department of Metallurgy, University of Melbourne, 1967.
M. Tokar, J. Amer. Ceram. Soc. 56, 173–77 (1973).
F. Garofalo, Fundamentals of Creep and Creep-Rupture in Metals, Macmillan Company, New York, 1965.
M.F. Ashby, Acta Met. 20, 887–97 (1972).
F.A. Mohamed and T.G. Langdon, “Deformation Mechanism Maps Based on Grain Size,” Met. Trans. (in press).
T.G. Langdon and J.A. Pask, Acta Met. 18, 505–10 (1970).
D.E. Stellrecht, M.S. Farkas and D.P. Moak, J. Amer. Ceram. Soc. 51, 455–58 (1968).
F.A. Mohamed and T.G. Langdon, J. Appl. Phys. 45, 1965–67 (1974).
W.R. Cannon and O.D. Sherby, J. Amer. Ceram. Soc. 56, 157–60 (1973).
S.H. Kirby and C.B. Raleigh, Teotonophysics 19, 165–94 (1973).
G.B. Gibbs, Mém. Sci. Rev. Mét. 62, 781–86 (1965).
J.E. Harris, Met. Sci. J. 7, 1–6 (1973).
L.W. Barr, I.M. Hoodless, J.A. Morrison and R. Rudham, Trans. Faraday Soc. 56, 697–708 (1960).
F.A. Mohamed and T.G. Langdon, to be published.
T.G. Langdon and F.A. Mohamed, Proc. Fourth Bolton Landing Conf. on Grain Boundaries in Engineering Materials, Lake George, N.Y., 1974 (in press).
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1975 Plenum Press, New York
About this chapter
Cite this chapter
Langdon, T.G. (1975). Grain Boundary Deformation Processes. In: Bradt, R.C., Tressler, R.E. (eds) Deformation of Ceramic Materials. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-4431-5_4
Download citation
DOI: https://doi.org/10.1007/978-1-4613-4431-5_4
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4613-4433-9
Online ISBN: 978-1-4613-4431-5
eBook Packages: Springer Book Archive