Radiation damage in nanostructured materials

X Zhang, K Hattar, Y Chen, L Shao, J Li, C Sun… - Progress in Materials …, 2018 - Elsevier
Materials subjected to high dose irradiation by energetic particles often experience severe
damage in the form of drastic increase of defect density, and significant degradation of their …

Behavior of tungsten under irradiation and plasma interaction

M Rieth, R Doerner, A Hasegawa, Y Ueda… - Journal of Nuclear …, 2019 - Elsevier
In 1959 the Journal of Nuclear Materials (JNM) was founded and is now celebrating its
Diamond Anniversary year. The present paper is part of a series in which single JNM …

Outstanding radiation resistance of tungsten-based high-entropy alloys

O El-Atwani, N Li, M Li, A Devaraj, JKS Baldwin… - Science …, 2019 - science.org
A body-centered cubic W-based refractory high entropy alloy with outstanding radiation
resistance has been developed. The alloy was grown as thin films showing a bimodal grain …

Powder Metallurgy Route to Ultrafine‐Grained Refractory Metals

L Zhang, X Li, X Qu, M Qin, Z Que, Z Wei… - Advanced …, 2023 - Wiley Online Library
Ultrafine‐grained (UFG) refractory metals are promising materials for applications in
aerospace, microelectronics, nuclear energy, and many others under extreme environments …

Loop and void damage during heavy ion irradiation on nanocrystalline and coarse grained tungsten: Microstructure, effect of dpa rate, temperature, and grain size

O El-Atwani, E Esquivel, M Efe, E Aydogan, YQ Wang… - Acta Materialia, 2018 - Elsevier
Displacement damage, through heavy ion irradiation was studied on two tungsten grades
(coarse grained tungsten (CGW) and nanocrystalline and ultrafine grained tungsten (NCW)) …

Grain boundary softening from stress assisted helium cavity coalescence in ultrafine-grained tungsten

WS Cunningham, Y Zhang, SL Thomas, O El-Atwani… - Acta Materialia, 2023 - Elsevier
The formation of helium cavities in coarse-grained materials produces hardening
proportional to the number density and size of the cavities and due to the interaction of …

Unprecedented irradiation resistance of nanocrystalline tungsten with equiaxed nanocrystalline grains to dislocation loop accumulation

O El-Atwani, E Esquivel, E Aydogan, E Martinez… - Acta Materialia, 2019 - Elsevier
Nanocrystalline metals are often postulated as irradiation tolerant materials due to higher
grain boundary densities. The efficiency of these materials in mitigating irradiation damage …

The role of grain size in He bubble formation: Implications for swelling resistance

O El-Atwani, JE Nathaniel II, AC Leff… - Journal of Nuclear …, 2017 - Elsevier
Nanocrystalline metals are postulated as radiation resistant materials due to their high
defect and particle (eg Helium) sink density. Here, the performance of nanocrystalline iron …

[HTML][HTML] Direct observation of sink-dependent defect evolution in nanocrystalline iron under irradiation

O El-Atwani, JE Nathaniel, AC Leff, K Hattar… - Scientific reports, 2017 - nature.com
Crystal defects generated during irradiation can result in severe changes in morphology and
an overall degradation of mechanical properties in a given material. Nanomaterials have …

Structures and transitions in bcc tungsten grain boundaries and their role in the absorption of point defects

T Frolov, Q Zhu, T Oppelstrup, J Marian, RE Rudd - Acta Materialia, 2018 - Elsevier
We use atomistic simulations to investigate grain boundary (GB) phase transitions in
elemental body-centered cubic (bcc) metal tungsten. Motivated by recent modeling study of …