Radiation-induced helium bubbles in metals

SH Li, JT Li, WZ Han - Materials, 2019 - mdpi.com
Helium (He) bubbles are typical radiation defects in structural materials in nuclear reactors
after high dose energetic particle irradiation. In the past decades, extensive studies have …

[HTML][HTML] Multiscale Modelling: the role of helium in iron

M Samaras - Materials Today, 2009 - Elsevier
The mechanisms and processes of bubble nucleation and growth are still not completely
solved and research in this field is ongoing. This is an important issue for materials used in …

Simulation of radiation damage in Fe alloys: an object kinetic Monte Carlo approach

C Domain, CS Becquart, L Malerba - Journal of Nuclear Materials, 2004 - Elsevier
The reactor pressure vessel (RPV) steels used in current nuclear power plants embrittle as a
consequence of the continuous irradiation with neutrons. Among other radiation effects, the …

An in situ study on the effect of grain boundaries on helium bubble formation in dual beam irradiated FeCrAl alloy

T Sun, T Niu, Z Shang, WY Chen, M Li, H Wang… - Acta Materialia, 2023 - Elsevier
FeCrAl alloy is one of the promising cladding materials in the advanced nuclear reactors.
Here we compare the irradiation response of the nanolaminate (NL) and coarse-grained …

Molecular dynamics simulations of helium cluster formation in tungsten

KOE Henriksson, K Nordlund, J Keinonen - Nuclear Instruments and …, 2006 - Elsevier
Molecular dynamics simulations of helium implantation into single-crystalline tungsten at 0
and 300K have been performed. Non-damaging ion energies of 50, 100 and 200eV were …

Helium defects interactions and mechanism of helium bubble growth in tungsten: A molecular dynamics simulation

XC Li, YN Liu, Y Yu, GN Luo, X Shu, GH Lu - Journal of Nuclear Materials, 2014 - Elsevier
Molecular dynamics simulations have been performed to investigate the interactions
between helium (He) and defects in tungsten (W). The binding energy between He and He …

Modeling the helium transport and premature intergranular fracture by dislocation motion in irradiated metals

J Fu, W Liu, H Sui, Y Cheng, J Zhang, L Yu… - International Journal of …, 2023 - Elsevier
Helium migration is an important mechanism of helium embrittlement in irradiated metallic
materials, which can severely affect their service reliability. Despite many efforts to reveal the …

Pair potential for Fe–He

N Juslin, K Nordlund - Journal of Nuclear Materials, 2008 - Elsevier
A new potential for helium in bulk iron was developed in order to study the effect of He in
irradiated iron. As helium in iron degrades the material properties, a good description of He …

Fast three dimensional migration of He clusters in bcc Fe and Fe–Cr alloys

D Terentyev, N Juslin, K Nordlund… - Journal of Applied …, 2009 - pubs.aip.org
In this work, we perform atomistic molecular dynamics simulations to assess the properties
of small helium vacancy (He-V) and pure He clusters in body-centered cubic Fe and in Fe 90 …

A nucleation mechanism of hydrogen blister in metals and alloys

XC Ren, QJ Zhou, GB Shan, WY Chu, JX Li… - … materials transactions A, 2008 - Springer
The nucleation process of hydrogen blister in metals was investigated through experiments
and the mechanism was discussed. Small hydrogen blister in charged Ni-P amorphous …