Local slip resistances in equal-molar MoNbTi multi-principal element alloy

S Xu, Y Su, WR Jian, IJ Beyerlein - Acta Materialia, 2021 - Elsevier
In this work, we calculate the local slip resistances (LSRs) in equal-molar MoNbTi multi-
principal element alloy via molecular static simulations. We consider dislocations of either …

Microstructure and hardening induced by neutron irradiation in single crystal, ITER specification and cold rolled tungsten

A Dubinko, D Terentyev, C Yin… - International Journal of …, 2021 - Elsevier
In this work, we have performed neutron irradiation and sub-sequent microstructural and
micro-hardness measurements on a series of tungsten grades. The neutron irradiation was …

Neutron irradiation hardening across ITER diverter tungsten armor

D Terentyev, C Yin, A Dubinko, CC Chang… - International Journal of …, 2021 - Elsevier
In this work, we have performed neutron irradiation and sub-sequent hardness
measurements on a series of tungsten grades to screen the irradiation-induced hardness as …

Inelastic contact behaviors of nanosized single-asperity and multi-asperity on α-Fe surface: molecular dynamic simulations

W Xie, C Liu, D Jiang, J Jin - International Journal of Mechanical Sciences, 2021 - Elsevier
Contact surfaces are widely used in precision machines for transmitting force and torque,
whose characteristics are crucial. The onset of plasticity during contact at microscale is …

Atomic-scale mechanisms of void strengthening in tungsten

YN Osetsky - Tungsten, 2021 - Springer
Neutron and heavy-ion irradiation of tungsten produces nanometer-size vacancy voids, gas-
filled bubbles and dislocation loops. These defect features can affect mechanical properties …

Effect of interfacial bonding on dislocation strengthening in graphene nanosheet reinforced iron composite: A molecular dynamics study

L Wang, J Jin, P Yang, S Li, S Tang, Y Zong… - Computational Materials …, 2021 - Elsevier
It is uncertain that the interfacial bonding is whether a strong chemical bond or a weak van
der-Waals one in graphene-metal composites. The effect of interfacial bonding features on …

[HTML][HTML] Modelling the brittle-to-ductile transition of high-purity tungsten under neutron irradiation

MAO Vrielink, V Shah, JAW Van Dommelen… - Journal of Nuclear …, 2021 - Elsevier
Tungsten becomes significantly more brittle when exposed to neutron irradiation, which can
be detrimental for the functionality of plasma facing components in nuclear fusion reactors. A …

Atomic insights on interaction mechanism of dislocation with void/impurity/precipitates in bcc iron

MM Azeem, D Yun, M Zubair - International …, 2021 - asmedigitalcollection.asme.org
Ferritic steels are important cladding and structural material for current and advanced
reactors containing Fe as a primary compositional matrix element. Three proposed models …

Dislocation precipitate bypass through elastically mismatched precipitates

BA Szajewski, JC Crone, J Knap - Modelling and Simulation in …, 2021 - iopscience.iop.org
The Orowan bypass mechanism for elastically homogeneous precipitates has been
thoroughly studied. In engineering materials, alternate phased precipitates exhibit elastic …

[HTML][HTML] Multi-scale fracture probability analysis of tungsten monoblocks under fusion conditions

MAO Vrielink, JAW van Dommelen… - Nuclear Materials and …, 2021 - Elsevier
Plasma facing components inside future nuclear fusion reactors are subjected to a high heat
load and intense irradiation conditions. Using advanced computational material models …