Abstract
The glide of dislocations in peak- and overaged particle strengthened f.c.c. materials has been simulated in computers. The resistance of dislocations to bending has been described on the basis of Brown's ( Phil. Mag. 10, 1964, 441) concept of the dislocations' self-stress. Hence even strongly bent dislocations have been treated accurately. The computer experiments have been conducted for three different types of spherical particles: (i) incoherent, i.e. non-shearable ones, (ii) long-range ordered shearable ones, and (iii) ones which have a lattice mismatch. The finite dimensions of the particles have been fully allowed for. These simulations yield numerical data for the critical resolved shear stress as a function of the volume fraction of the particles and their average radius. These functions can be well represented by amended versions of current analytical formulae derived from standard models of particle strengthening.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
