Recent progress in the phase-field dislocation dynamics method
S Xu - Computational Materials Science, 2022 - Elsevier
The phase-field dislocation dynamics (PFDD) method, originated in 2002, is a continuum
dislocation model that uses order parameters to describe dislocation slips in crystalline …
dislocation model that uses order parameters to describe dislocation slips in crystalline …
The effect of local chemical ordering on Frank-Read source activation in a refractory multi-principal element alloy
In this work, we investigate the operation of Frank-Read (FR) sources in a refractory multi-
principal element alloy (MPEA). Simulations of discrete dislocation motion in MPEAs is …
principal element alloy (MPEA). Simulations of discrete dislocation motion in MPEAs is …
Effect of short-range ordering and grain boundary segregation on shear deformation of CoCrFeNi high-entropy alloys with Al addition
A method combining molecular dynamics (MD) and Monte Carlo (MC) simulation is used to
analyze the short-range ordering and grain boundary (GB) segregation in the bi-crystals of …
analyze the short-range ordering and grain boundary (GB) segregation in the bi-crystals of …
Atomistic simulations of the local slip resistances in four refractory multi-principal element alloys
The design and development of structural materials that can survive under the extreme
conditions of operation are critical to next generation aerospace and energy technologies …
conditions of operation are critical to next generation aerospace and energy technologies …
Interaction of extended dislocations with nanovoid clusters
Voids of nanoscale dimensions in irradiated metals can act as obstacles to dislocation
motion and cause strengthening. In this work, nanovoid strengthening and the influences of …
motion and cause strengthening. In this work, nanovoid strengthening and the influences of …
Effects of short range ordering on the generalized stacking fault energy and deformation mechanisms in FCC multiprincipal element alloys
Abstract Equiatomic FCC CrCoNi, VCoNi and CrCoNiFeMn exhibit distinctly different
deformation mechanisms where twinning is prevalent in CrCoNi and CrCoNiFeMn, but not …
deformation mechanisms where twinning is prevalent in CrCoNi and CrCoNiFeMn, but not …
Generalized stacking fault energies and Peierls stresses in refractory body-centered cubic metals from machine learning-based interatomic potentials
The generalized stacking fault energies (GSFE) and Peierls stresses are strongly related to
the mechanical properties of refractory metals. In this work, the GSFE curves and Peierls …
the mechanical properties of refractory metals. In this work, the GSFE curves and Peierls …
Frank-Read source operation in six body-centered cubic refractory metals
Abstract The Frank-Read (FR) source is a well-known intragranular dislocation source that
plays an important role in size-dependent dislocation multiplication in metallic crystals. In …
plays an important role in size-dependent dislocation multiplication in metallic crystals. In …
Atomistic calculations of the generalized stacking fault energies in two refractory multi-principal element alloys
In this work, we utilize atomistic simulations to calculate the generalized stacking fault
energies (GSFEs), which are related to the dislocation glide process, on four types of slip …
energies (GSFEs), which are related to the dislocation glide process, on four types of slip …
Origin of deformation twinning in bcc tungsten and molybdenum
Twinning is profuse in bcc transition metals (TMs) except bulk W and Mo. However, W and
Mo nanocrystals surprisingly exhibit twinning during room temperature compression, which …
Mo nanocrystals surprisingly exhibit twinning during room temperature compression, which …