Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published April 1959 | public
Journal Article

Partially pinned tilt boundaries

Abstract

This paper presents the results of a theoretical study of the conditions under which small angle tilt boundaries in a crystal can be moved when subjected to a stress which does not produce general slip. The dislocations in the boundary are assumed to be partially pinned by Cottrell atmospheres, intersecting substructure, or precipitates along the dislocation lines. The results show that partially pinned dislocation boundaries may move at lower stresses than similarly pinned isolated dislocations if the density of pinned segments is sufficiently low. Stress concentrations at pinned segments on a small angle boundary are discussed. A "yield condition" for motion of certain partially pinned boundaries is described in which pinned dislocations are left behind when the boundary is moved.

Additional Information

© Pergamon Press Inc. Received May 5, 1958; revised version July 21, 1958. This research was supported by the Solid State Sciences Division, Air Force Office of Scientific Research, ARDC, Washington 25, D.C. under Contract No. AF18(600)-490 Project Designation R-335-10-6.

Additional details

Created:
August 19, 2023
Modified:
October 19, 2023