Modeling high temperature anneal hardening in Au submicron pillar by developing coupled dislocation glide-climb model
Recent experimental studies have shown that metals at submicron scale may harden rather
than soften after high temperature annealing, which is contrast to the typical behavior at …
than soften after high temperature annealing, which is contrast to the typical behavior at …
[HTML][HTML] Vacancy diffusion coupled discrete dislocation dynamic modeling of compression creep of micro-pillars at elevated temperature
A two-dimensional discrete-continuous scheme (DCS), which couples the motions of
dislocations and diffusion of vacancies, is developed. There are three modules in this …
dislocations and diffusion of vacancies, is developed. There are three modules in this …
FIB-induced dislocations in Al submicron pillars: Annihilation by thermal annealing and effects on deformation behavior
In-situ transmission electron microscopy (TEM) annealing of submicron Al pillars (∼ 300–
450 nm in diameter) fabricated by focused ion beam (FIB) shows that the dislocation loops …
450 nm in diameter) fabricated by focused ion beam (FIB) shows that the dislocation loops …
Discrete stochastic model of point defect-dislocation interaction for simulating dislocation climb
Dislocation climb is an important high temperature process in metals plasticity, responsible
for the phenomena such as creep, swelling, or hardening. Climb is defined by the ability of …
for the phenomena such as creep, swelling, or hardening. Climb is defined by the ability of …
Latent hardening/softening behavior in tension and torsion combined loadings of single crystal FCC micropillars
JD Gravell - Acta Materialia, 2020 - Elsevier
In metallic materials, the activation of one slip system increases the flow strength of other slip
systems, which is phenomenon known as latent hardening. This latent hardening behavior …
systems, which is phenomenon known as latent hardening. This latent hardening behavior …
Temperature dependent plasticity in BCC micropillars
Recent experiments in micron-or sub-micron metallic pillars have displayed size dependent
plasticity. Dislocation dynamics (DD) simulations can be a useful tool in studying dislocation …
plasticity. Dislocation dynamics (DD) simulations can be a useful tool in studying dislocation …
Strain rate effects on the plastic flow in submicron copper pillars: Considering the influence of sample size and dislocation nucleation
J Hu, Z Liu, E Van der Giessen, Z Zhuang - Extreme Mechanics Letters, 2017 - Elsevier
Three-dimensional discrete dislocation dynamics (DDD) simulations are performed to
investigate the plastic flow behaviors of submicron copper pillars under different loading …
investigate the plastic flow behaviors of submicron copper pillars under different loading …
A continuum model for dislocation climb
Dislocation climb plays an important role in understanding plastic deformation of metallic
materials at high temperature. In this paper, we present a continuum formulation for …
materials at high temperature. In this paper, we present a continuum formulation for …
Investigations of pipe-diffusion-based dislocation climb by discrete dislocation dynamics
Y Gao, Z Zhuang, ZL Liu, XC You, XC Zhao… - International journal of …, 2011 - Elsevier
A new numerical dislocation climb model based on incorporating the pipe diffusion theory
(PDT) of vacancies with 3D discrete dislocation dynamics (DDD) is developed. In this model …
(PDT) of vacancies with 3D discrete dislocation dynamics (DDD) is developed. In this model …
Introducing dislocation climb by bulk diffusion in discrete dislocation dynamics
We report a method to incorporate dislocation climb controlled by bulk diffusion in a three-
dimensional discrete dislocation dynamics (DDD) simulation for fcc metals. In this model we …
dimensional discrete dislocation dynamics (DDD) simulation for fcc metals. In this model we …