Achieving high strength and ductility in high-entropy alloys via spinodal decomposition-induced compositional heterogeneity
Y Chen, Y Fang, R Wang, Y Tang, S Bai… - Journal of Materials …, 2023 - Elsevier
The compositional heterogeneity in high-entropy alloys (HEAs) has been reported to be an
inherent entity, which significantly alters the mechanical properties of materials by tuning the …
inherent entity, which significantly alters the mechanical properties of materials by tuning the …
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 …
Multi-scale investigation of short-range order and dislocation glide in MoNbTi and TaNbTi multi-principal element alloys
Refractory multi-principal element alloys (RMPEAs) are promising materials for high-
temperature structural applications. Here, we investigate the role of short-range ordering …
temperature structural applications. Here, we investigate the role of short-range ordering …
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 …
Continuum modeling of dislocation channels in irradiated metals based on stochastic crystal plasticity
As a common feature observed in irradiated metallic materials, the formation of dislocation
channels has been extensively studied and is considered to play a key role in irradiation …
channels has been extensively studied and is considered to play a key role in irradiation …
Comparative modeling of the disregistry and Peierls stress for dissociated edge and screw dislocations in Al
Many elementary deformation processes in metals involve the motion of dislocations. The
planes of glide and specific processes dislocations prefer depend heavily on their atomic …
planes of glide and specific processes dislocations prefer depend heavily on their atomic …
Phase-field modeling of the interactions between an edge dislocation and an array of obstacles
Obstacles, such as voids and precipitates, are prevalent in crystalline materials. They
strengthen crystals by serving as barriers to dislocation glide. In this work, we develop a …
strengthen crystals by serving as barriers to dislocation glide. In this work, we develop a …
Phase-field dislocation modeling of cross-slip
The phase-field dislocation dynamics (PFDD) model is extended to simulate cross-slip in
body-centered cubic materials. The model makes use of a non-orthogonal, body-centered …
body-centered cubic materials. The model makes use of a non-orthogonal, body-centered …
A combined kinetic Monte Carlo and phase field approach to model thermally activated dislocation motion
In this work, a kinetic Monte Carlo (KMC) scheme is integrated into a phase field dislocation
dynamics (PFDD) model to account for thermal activation. While the implementation is …
dynamics (PFDD) model to account for thermal activation. While the implementation is …