The interaction of fast-moving dislocation
- 1 November 1964
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine
- Vol. 10 (107) , 771-778
- https://doi.org/10.1080/14786436408225382
Abstract
The elastic interaction between dislocations causes forest and glide dislocations to combine over part of their length. It is shown that this tendency to combine is drastically reduced when the glide dislocation is moving fast. For example, Lomer–Cottrell dislocation interactions in the f.c.c. lattice will be less than half formed at speeds of two-fifths of the velocity of sound. The disappearance of resistive stresses produced by these inter-actions at high speeds can thus give rise to instabilities in plastic flow. Applications to deformation twinning and discontinuous slip are discussed.Keywords
This publication has 10 references indexed in Scilit:
- Dislocation distributions and densities in F.C.C. copper alloysPhilosophical Magazine, 1962
- Theory of Dislocation Mobility in Pure SlipJournal of Applied Physics, 1962
- Dislocation Contributions to the Modulus and Damping in Copper at Megacycle FrequenciesJournal of Applied Physics, 1961
- Sur le durcissement dû à la recombinaison des dislocationsActa Metallurgica, 1960
- The effect of stacking fault energy on low temperature creep in pure metalsPhilosophical Magazine, 1958
- Slip in crystals of the caesium chloride typeActa Metallurgica, 1956
- The Equation of Motion of a DislocationPhysical Review B, 1953
- Über den Einfluß thermisch angeregter Schallwellen auf die plastische DeformationThe European Physical Journal A, 1950
- On the Equations of Motion of Crystal DislocationsProceedings of the Physical Society. Section A, 1949
- The mechanism of plastic deformation of crystals. Part I.—TheoreticalProceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character, 1934