Open AccessDISCRETE ELASTIC MODEL FOR CRYSTAL DISLOCATION——CORE STRUCTURE AND P-N FORCE
Author(s) -
孙宗琦,
韩明辉
Publication year - 1989
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.38.183
Subject(s) - isotropy , dislocation , core (optical fiber) , materials science , condensed matter physics , thermal , physics , thermodynamics , optics , composite material
The effect of the distribution of dislocation density in the core region is taken into account in the discrete elastic approach. The self-energies, effective inner cut radii, as functions of the position of dislocation center are calculated for screw dislocations with different core structures in isotropic elastic fcc and bcc lattices. The P-N forces for different slip planes are estimated.The effect of the thermal motion of atoms on P-N force is discussed. This discrete elastic approach is compared with other methods. We believe that the discrete elastic approach is an effective method for comprehensive investigation