When pure metals are rapidly cooled from temperatures near their melting points, considerable numbers of vacant lattice sites in excess of the equilibrium concentrations may be quenched in. Attempts have therefore been made to interpret the changes in physical properties which arise as the result of quenching, as being due largely to the influence of vacancies. Thus the increase in yield stress (1) has been interpreted in terms of the jogging of dislocation lines already in the crystal (2), the creation of small dislocation loops or stacking faults by the disc-like condensation of the vacancies (3, 4) and the formation of cavities on the dislocations (5). The annealing of electrical resistivity (6) has also been interpreted on the second model (4).
Unable to display preview. Download preview PDF.
- 1.Maddin, R., and A. H. Cottrell: Philosophic. Mag. 46, 735 (1955).Google Scholar
- 5.Coulomb, P., and J. Friedel: Report of Lake Placid Conference on Dislocations and Mechanical Properties of Crystals. p. 555. New York: Wiley 1957.Google Scholar
- 9.Wintenberger, M.: C. R. Acad. Sci. (Paris) 242, 128 (1956).Google Scholar
- 9.Wintenberger, M.: Rev. Métall. 54, 942 (1957).Google Scholar
- 11.Murphy-Tomlinson, H., reported by M. J. Whelan: Electron optical transmission studies of metals. p. 307. Ph. D. Dissertation, University of Cambridge 1958.Google Scholar
© Springer-Verlag Berlin Heidelberg 1960