By Topic

Dynamical Dislocation Theory of Crystal Plasticity. II. Easy Glide and Strain Hardening

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $31
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Gillis, Peter P. ; Department of Engineering Mechanics, University of Kentucky, Lexington, Kentucky ; Gilman, John J.

Your organization might have access to this article on the publisher's site. To check, click on this link: 

Mathematical descriptions of the stress‐strain‐time behavior of plastic crystals are developed using a statistical approach to dislocation dynamics. First, the ``easy‐glide'' portions of stress‐strain curves are described in terms of glide band propagation. Then, three models of strain hardening are developed and used in numerical calculations of stress‐strain curves. In one model, the mean density of mobile dislocations first increases and then decreases with increasing plastic strain. In another, strain introduces internal stress fluctuations which decrease the mean velocities of mobile dislocations. In the third (and preferred) model, strain increases the mean viscous drag acting on moving dislocations, thereby decreasing the mean velocity at a given stress. The numerically calculated curves show that the dynamical models provide realistic descriptions.

Published in:

Journal of Applied Physics  (Volume:36 ,  Issue: 11 )