Void growth by dislocation adsorption

Void growth by dislocation adsorption

Blog Article

We propose a dislocation adsorption-based mechanism for void growth in metals, wherein stor trebolle a void grows as dislocations from the bulk annihilate at its surface.The basic process is governed by glide and cross-slip of dislocations at the surface of a void.Using molecular dynamics simulations we show that when dislocations are present around a void, growth occurs more quickly and at much lower stresses than contraderm when the crystal is initially dislocation-free.Finally, we show that adsorption-mediated growth predicts an exponential dependence on the hydrostatic stress, consistent with the well-known Rice-Tracey equation.