High-velocity dislocations: Effective mass, effective line tension and multiplication
- 1 June 1991
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine A
- Vol. 63 (6) , 1241-1248
- https://doi.org/10.1080/01418619108205580
Abstract
An expression is derived for the effective mass of an edge dislocation moving with uniform velocity v in an isotropic elastic medium. Ishioka's analysis of the effective line tension of stationary dislocations is extended to the uniformly moving dislocations. The effective line tension of the moving edge dislocation becomes negative for c ≥ v ≳ 0·81c, where c is the velocity of transverse sound waves, when Poisson's ratio v = 0·3. The limiting velocity v c of the edge dislocation is not c but about 0·81c. Because the edge dislocation becomes unstable for c ≥ v ≥ v c, multiplication of the dislocation is expected at v c.Keywords
This publication has 2 references indexed in Scilit:
- Uniformly Moving DislocationsProceedings of the Physical Society. Section A, 1949
- On the Equations of Motion of Crystal DislocationsProceedings of the Physical Society. Section A, 1949