Diffusional Properties of the Stage-III Defect in Copper. II. A Model for Defect-Dislocation Interactions

Using the experimental results given in Part I as a guide, a linear model is developed in this Part which describes the interaction of a lattice defect and a dislocation. It is supposed in this model that the defect is free to diffuse between existing (or in‐grown) traps such as jogs or dislocation nodal points, and that if the defect is trapped, dislocation climb follows. From a comparison of the results given in Part I and the predictions of the model, values for the ``pipeline'' diffusivity and the strength of the binding of the defects to the in‐grown nodal points may be obtained. The numbers so obtained are consistent with values evolved from other techniques for studying atom motions. An estimate for diffusional jog‐pair energies is also given.

[1]  O. Buck,et al.  Diffusional Properties of the Stage‐III Defect in Copper. I. Experimental Results , 1967 .

[2]  O. Buck,et al.  Diffusional Properties of the Stage‐III Defect in Copper. III. Bulk Diffusion , 1967 .

[3]  R. Hasiguti.  Theory of Mechanical Relaxation Peaks in Cold‐Worked Metals , 1965 .

[4]  A. Seeger,et al.  Untersuchung atomarer Fehlstellen in verformtem Kupfer mit Hilfe des elektrischen Widerstandes , 1964, December 1.

[5]  A. Damask,et al.  Point Defects in Metals , 1964 .

[6]  M. Koiwa,et al.  Internal friction peaks at low temperatures in deformed copper , 1963 .

[7]  P. Shewmon,et al.  Self-diffusivity of silver in twist boundaries☆ , 1963 .

[8]  R. Newman,et al.  The interaction of vacancies with dislocations , 1962 .

[9]  R. Balluffi,et al.  Kinetic Theory of Dislocation Climb. I. General Models for Edge and Screw Dislocations , 1962 .

[10]  F. Ham.  Stress‐Assisted Precipitation on Dislocations , 1959 .

[11]  R. M. Broudy,et al.  Dislocations and Mechanical Properties of Crystals. , 1958 .

[12]  F. Young.  Polygonization of Copper , 1958 .

[13]  P. Beck,et al.  X‐Ray Study of Polygonization in Copper Single Crystals , 1957 .

[14]  J. Kessler.  Internal Friction and Defect Interaction in Germanium: Theoretical , 1957 .

[15]  G. W. Ratheneau.  Report of the Conference on Defects in Crystalline Solids , 1955 .

[16]  R. E. Hoffman,et al.  The effect of relative crystal and boundary orientations on grain boundary diffusion rates , 1954 .

[17]  A. Cottrell,et al.  Dislocation Theory of Yielding and Strain Ageing of Iron , 1949 .