FAST MOVING EDGE DISLOCATIONS ON THE (111) PLANE IN ANISOTROPIC FACE-CENTERED-CUBIC CRYSTALS
Abstract
The elastic displacement field around a uniformly moving edg dislocation ha been obtained for the case where the dislocation glides on a (111) plane in a 110 direction in an anisotropic facecentered-cubic crys l N EQUATION IS OBTAINED FOR THE VELOCITY (the Rayleigh wave velocity) at which the shear stress on the slip plane of a moving dislocation is zero. Dislocations of like sign moving at velocities faster than this v locity attrac r her t a rep l ch o r. it is concluded that when ani otropy is small and the elastic constant c11 is smaller than c12+2c44 (the more commonly occurring relationship between the elastic constants) the Rayleigh wave velocity is increased above its value in i o ropic crystal and herefore the extent of the velocity regio here i loc ions ex ibit an anomalous behavior is decreased. For slightly nisotropic crystals the limiting velocity of dislocation motion i the slower of the two s ear velocities in the 110 direction Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1961
- Accession Number
- AD0261377
Entities
People
- J. Weertman
Organizations
- Northwestern University