Enabling plastic co-deformation of disparate phases in a laser rapid solidified Sr-modified Al–Si eutectic through partial-dislocation-mediated-plasticity in Si
Nano-scale eutectics, such as rapid solidified Al–Si, exhibit enhanced yield strength and
strain hardening but plasticity is limited by cracking of the hard phase (Si). Mechanisms that …
strain hardening but plasticity is limited by cracking of the hard phase (Si). Mechanisms that …
The Peierls stress of dislocations: an analytic formula
B Joos, MS Duesbery - Physical Review Letters, 1997 - APS
A simple and rigorous analytic formula is derived for the Peierls stress of a dislocation within
the Peierls-Nabarro model. This is both a generalization and a correction of the previously …
the Peierls-Nabarro model. This is both a generalization and a correction of the previously …
Dislocations in silicon at high stress
J Rabier, L Pizzagalli, JL Demenet - Dislocations in solids, 2010 - Elsevier
This chapter is devoted to the structure and properties of dislocations obtained at high stress
in silicon, which have been shown to have different core structures from the ones observed …
in silicon, which have been shown to have different core structures from the ones observed …
Atomistic simulations of dislocations and defects
This paper reviews selected recent research on the atomistic simulation of dislocation and
defect properties of materials relevant to the multiscale modeling of plasticity and strength …
defect properties of materials relevant to the multiscale modeling of plasticity and strength …
Periodic image effects in dislocation modelling
The use of periodic boundary conditions for modelling crystal dislocations is predicated on
one's ability to handle the inevitable image effects. This communication deals with an often …
one's ability to handle the inevitable image effects. This communication deals with an often …
Dislocation core effects on mobility
The purpose of this chapter is to discuss the atomic structure and interactions in the
dislocation core and their effects on dislocation mobility from the standpoint of theoretical …
dislocation core and their effects on dislocation mobility from the standpoint of theoretical …
Liquidlike atomic environments act as plasticity carriers in amorphous silicon
MJ Demkowicz, AS Argon - Physical Review B—Condensed Matter and …, 2005 - APS
Molecular-dynamics simulation of amorphous silicon (a-Si) using the Stillinger-Weber
potential reveals the existence of two distinct atomic environments: one solidlike and the …
potential reveals the existence of two distinct atomic environments: one solidlike and the …
On transition temperatures in the plasticity and fracture of semiconductors
P Pirouz, JL Demenet, MH Hong - Philosophical Magazine A, 2001 - Taylor & Francis
Recent experiments on deformation of semiconductors show an abrupt change in the
variation in the critical resolved shear stress τY with temperature T. This implies a change in …
variation in the critical resolved shear stress τY with temperature T. This implies a change in …
Experimental examination of displacement and strain fields in an edge dislocation core
CW Zhao, YM Xing, CE Zhou, PC Bai - Acta materialia, 2008 - Elsevier
We present a displacement and strain analysis of edge dislocation core in gold. The
displacement and strain field around the edge dislocation were mapped by geometric phase …
displacement and strain field around the edge dislocation were mapped by geometric phase …
Microalloying for ductility in molybdenum disilicide
The effects of substitutional alloying on the ductility of MoSi2 single crystals are studied.
Criteria for ductility and brittleness are expressed in terms of surface energies and …
Criteria for ductility and brittleness are expressed in terms of surface energies and …