Relative mobility of screw versus edge dislocations controls the ductile-to-brittle transition in metals
Body-centered cubic metals including steels and refractory metals suffer from an abrupt
ductile-to-brittle transition (DBT) at a critical temperature, hampering their performance and …
ductile-to-brittle transition (DBT) at a critical temperature, hampering their performance and …
High-temperature deformation mechanisms in a BCC+ B2 refractory complex concentrated alloy
The current study reports the analysis of the deformation mechanisms at 600° C in a two-
phase, BCC+ B2, refractory complex concentrated alloy (RCCA) Al 0.5 NbTa 0.8 Ti 1.5 V 0.2 …
phase, BCC+ B2, refractory complex concentrated alloy (RCCA) Al 0.5 NbTa 0.8 Ti 1.5 V 0.2 …
Plastic deformation of solid-solution strengthened Hf-Nb-Ta-Ti-Zr body-centered cubic medium/high-entropy alloys
Plastic deformation and rate-controlling mechanism during tensile deformation of various
body-centered cubic (BCC) medium/high-entropy alloys (MEAs/HEAs) were investigated at …
body-centered cubic (BCC) medium/high-entropy alloys (MEAs/HEAs) were investigated at …
Mechanism of brittle-to-ductile transition in tungsten under small-punch testing
YH Zhang, WZ Han - Acta Materialia, 2021 - Elsevier
Exceptional high brittle-to-ductile transition temperature (BDTT) is a critical issue that limits
the application of tungsten as structural materials. The controlling factors in BDT have been …
the application of tungsten as structural materials. The controlling factors in BDT have been …
Anomalous slip in body-centred cubic metals
D Caillard, B Bienvenu, E Clouet - Nature, 2022 - nature.com
Crystal strength and plastic flow are controlled by the motion and interaction of dislocations,
the line defects carrying atomic shear increments. Whereas, in most crystals, deformation …
the line defects carrying atomic shear increments. Whereas, in most crystals, deformation …
Classical and machine learning interatomic potentials for BCC vanadium
BCC transition metals (TMs) exhibit complex temperature and strain-rate dependent plastic
deformation behavior controlled by individual crystal lattice defects. Classical empirical and …
deformation behavior controlled by individual crystal lattice defects. Classical empirical and …
Orientation dependent plasticity of the refractory multi-principal element alloy MoNbTi investigated via micropillar compression
Refractory multi-principal element alloys (RMPEAs) are promising candidate materials for
use in high temperature structural applications and other extreme environments. Recent …
use in high temperature structural applications and other extreme environments. Recent …
Atomic-scale hidden point-defect complexes induce ultrahigh-irradiation hardening in tungsten
Tungsten displays high strength in extreme temperature and radiation environments and is
considered a promising plasma facing material for fusion nuclear reactors. Unlike other …
considered a promising plasma facing material for fusion nuclear reactors. Unlike other …
Mobility of screw dislocation in BCC tungsten at high temperature in presence of carbon
The interplay of screw dislocations with carbon atoms is investigated in tungsten at high
temperature using in situ straining experiments in a transmission electron microscope (TEM) …
temperature using in situ straining experiments in a transmission electron microscope (TEM) …
Mechanisms of helium irradiation blistering and surface deformation in tungsten
Helium irradiation blistering in tungsten is of intense interest for plasma-facing materials
under fusion-relevant conditions. Previous studies have revealed that the surface blistering …
under fusion-relevant conditions. Previous studies have revealed that the surface blistering …