[HTML][HTML] Interactions between dislocations and boundaries during deformation

H Pan, Y He, X Zhang - Materials, 2021 - mdpi.com
The interactions between dislocations (dislocations and deformation twins) and boundaries
(grain boundaries, twin boundaries and phase interfaces) during deformation at ambient …

Implication of grain-boundary structure and chemistry on plasticity and failure

G Dehm, J Cairney - MRS Bulletin, 2022 - Springer
Failure processes are often linked to interfaces, their atomistic structure and chemistry.
Therefore, a detailed understanding of failure processes requires knowledge of structural …

Understanding extra strengthening in gradient nanotwinned Cu using crystal plasticity model considering dislocation types and strain gradient effect

X Guo, J Zhang, T Kong, N Mao, C Sun, Y Cui… - International Journal of …, 2024 - Elsevier
Gradient nanotwinned (GNT) Cu, composed of various homogeneous nanotwinned (HNT)
components, successfully achieves the synergistic enhancement of strength and ductility …

Mechanical properties and deformation behaviours of submicron-sized Cu–Al single crystals

R Niu, X An, L Li, Z Zhang, YW Mai, X Liao - Acta Materialia, 2022 - Elsevier
Tuning stacking fault energy (SFE) via alloying provides a robust protocol to manipulate
deformation mechanism and consequently the mechanical properties of metallic materials …

Molecular dynamics simulations of dislocation–coherent twin boundary interaction in face-centered cubic metals

C Chen, F Zhang, H Xu, Z Yang… - Journal of Materials …, 2022 - Springer
The interaction mechanisms between dislocations and coherent twin boundary (CTB) were
determined with molecular dynamics simulations. The dislocation slip rate is found to …

Approaches to measure the resistivity of grain boundaries in metals with high sensitivity and spatial resolution: a case study employing Cu

H Bishara, M Ghidelli, G Dehm - ACS Applied Electronic Materials, 2020 - ACS Publications
It is well-known that grain boundaries (GBs) increase the electrical resistivity of metals due to
their enhanced electron scattering. The resistivity values of GBs are determined by their …

Intrinsic-extrinsic size effect relationship for micromechanical tests

JP Wharry, KH Yano, PV Patki - Scripta Materialia, 2019 - Elsevier
Miniaturized mechanical tests are commonly utilized to evaluate properties of materials,
including thin films, nanostructured, and irradiated materials. However, the specimen size …

Atomistic deformation behavior of single and twin crystalline Cu nanopillars with preexisting dislocations

WS Ko, A Stukowski, R Hadian, A Nematollahi, JB Jeon… - Acta Materialia, 2020 - Elsevier
Molecular dynamics simulations are performed to investigate the impact of a coherent Σ3
(111) twin boundary on the plastic deformation behavior of Cu nanopillars. Our work reveals …

Anomalous high strain rate compressive behavior of additively manufactured copper micropillars

R Ramachandramoorthy, S Kalácska, G Poras… - Applied Materials …, 2022 - Elsevier
Microscale dynamic testing is vital to the understanding of material behavior at application
relevant strain rates. However, despite two decades of intense micromechanics research …

Plasticity in irradiated FeCrAl nanopillars investigated using discrete dislocation dynamics

Y Pachaury, G Warren, JP Wharry, G Po… - International Journal of …, 2023 - Elsevier
In this paper, we investigate plasticity in irradiated FeCrAl nanopillars using discrete
dislocation dynamics simulations (DDD), with comparisons to transmission electron …