Lattice Resistance to Dislocation Motion at the Nanoscale

Details Lattice Resistance to Dislocation Motion at the Nanoscale Lattice Resistance to Dislocation Motion at the Nanoscale

2008-04-28

arxiv.org/abs/0804.4360v2

Physical Review Letters 101, 115506 (2008)

Physics

Condensed Matter

Materials Science

4 Figures

Scientific paper

10.1103/PhysRevLett.101.115506

In this letter we propose a model that demonstrates the effect of free surface on the lattice resistance experienced by a moving dislocation in nanodimensional systems. This effect manifests in an enhanced velocity of dislocation due to the proximity of the dislocation line to the surface. To verify this finding, molecular dynamics simulations for an edge dislocation in bcc molybdenum are performed and the results are found to be in agreement with the numerical implementations of this model. The reduction in this effect at higher stresses and temperatures, as revealed by the simulations, confirms the role of lattice resistance behind the observed change in the dislocation velocity.

Affiliated with

Also associated with

No associations

Rating

Lattice Resistance to Dislocation Motion at the Nanoscale does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Lattice Resistance to Dislocation Motion at the Nanoscale, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lattice Resistance to Dislocation Motion at the Nanoscale will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-691349