Nuclear reactor materials at the atomic scale

Marquis, Emmanuelle A.; Hyde, J.M.; Saxey, David W.; Lozano-Pérez, Sergio; Castro, V. de; Hudson, D. R.; Williams, Ceri A.; Humphry-Baker, Samuel A.; Smith, G.D.W.

doi:10.1016/s1369-7021(09)70296-2

Cited by 82 publications

(43 citation statements)

References 74 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…While these phases are thermodynamically expected for relatively high Re content, they have been observed in neutron-irradiated under-saturated W-5%Re and W-25%Re alloys using transmission electron microscopy (TEM) [14] and field ion microscopy [15,16]. More recently, Marquis et al [17] have shown the formation of Re-Rich precipitates in W-25 wt%Re after only 2.8 dpa at 500°C, using tungsten ion implantation. The r and v phases are known to be brittle [18] and deleterious to the mechanical properties of tungsten alloys [19].…”

Section: Introductionmentioning

confidence: 99%

“…Typically TEM has been used to study the dislocation structures produced by irradiation [29,30], while atom probe tomography (APT) has been used to study the changes in local chemistry [17,31,32]. As the damaged layers are shallow, traditional bulk mechanical tests cannot be used to study the mechanical properties; however nanoindentation has recently been used to test the hardness of these layers, as compared to bulk materials [27,28,[33][34][35].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Hardening of self ion implanted tungsten and tungsten 5-wt% rhenium

Armstrong¹,

Yi²,

Marquis³

et al. 2013

Journal of Nuclear Materials

119

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hardening of self ion implanted tungsten and tungsten 5-wt% rhenium

Armstrong¹,

Yi²,

Marquis³

et al. 2013

Journal of Nuclear Materials

119

View full text Add to dashboard Cite

“…Irradiation-induced accelerated ageing is one of the crucial issues that limits the lifetime of nuclear reactors. Fe-Cr steels with 7-18 at.% Cr are promising structural materials for fast neutron reactors due to their relatively low rate of swelling at elevated temperatures [110]. In the binary Fe-Cr alloy a spinodal decomposition can lead to a formation of precipitates of a' phase, but at low chromium concentrations the alloys are anomalously stable.…”

Section: Phase Stability Of Fe-based Alloysmentioning

confidence: 99%

Recent progress in simulations of the paramagnetic state of magnetic materials

Abrikosov

Ponomareva

Steneteg

et al. 2016

Current Opinion in Solid State and Materials Science

View full text Add to dashboard Cite

a b s t r a c tWe review recent developments in the field of first-principles simulations of magnetic materials above the magnetic order-disorder transition temperature, focusing mainly on 3d-transition metals, their alloys and compounds. We review theoretical tools, which allow for a description of a system with local moments, which survive, but become disordered in the paramagnetic state, focusing on their advantages and limitations. We discuss applications of these theories for calculations of thermodynamic and mechanical properties of paramagnetic materials. The presented examples include, among others, simulations of phase stability of Fe, Fe-Cr and Fe-Mn alloys, formation energies of vacancies, substitutional and interstitial impurities, as well as their interactions in Fe, calculations of equations of state and elastic moduli for 3d-transition metal alloys and compounds, like CrN and steels. The examples underline the need for a proper treatment of magnetic disorder in these systems.

show abstract

“…[1][2][3] This He damage has been a problem in metals used as nuclear structural materials, 1,4,5 recently, MAX phase materials (e.g. Ti 3 SiC 2 and Ti 3 AlC 2 ) have been considered as better candidates for nuclear structural materials [6][7][8][9] and some experiments have demonstrated that Ti 3 AlC 2 exhibits high tolerance to the He damage.…”

Section: Introductionmentioning

confidence: 99%

The effects of He clusters on the mechanical properties of Ti₃AC₂ (A = Ge, Si): first-principles studies

et al. 2017

View full text Add to dashboard Cite

Herein, the damage to the mechanical properties of Ti 3 AC 2 (A ¼ Ge, Si) was systematically investigated by first-principles calculations. It is known that the interstitial He atoms homogenously generated in the materials would finally migrate to the A layer and form clusters of no more than 7 He atoms at a monovacancy in the A layer, and the cluster of 7 He atoms reduces the ideal tensile strength of Ti 3 SiC 2 (or Ti 3 GeC 2 ) to about 37.3% (or 35.5%). The strain simulations showed that the fracture would mostly occur around the A layer and enhances with increase in the cluster size, while the Ti 3 C 2 blocks are relatively stable during tension. Although the He damage to the mechanical properties shows the similar trend for Ti 3 SiC 2 and Ti 3 GeC 2 , the former displays better properties for applications in nuclear structural devices.

show abstract

Nuclear reactor materials at the atomic scale

Cited by 82 publications

References 74 publications

Hardening of self ion implanted tungsten and tungsten 5-wt% rhenium

Hardening of self ion implanted tungsten and tungsten 5-wt% rhenium

Recent progress in simulations of the paramagnetic state of magnetic materials

The effects of He clusters on the mechanical properties of Ti₃AC₂ (A = Ge, Si): first-principles studies

Contact Info

Product

Resources

About

Nuclear reactor materials at the atomic scale

Cited by 82 publications

References 74 publications

Hardening of self ion implanted tungsten and tungsten 5-wt% rhenium

Hardening of self ion implanted tungsten and tungsten 5-wt% rhenium

Recent progress in simulations of the paramagnetic state of magnetic materials

The effects of He clusters on the mechanical properties of Ti3AC2 (A = Ge, Si): first-principles studies

Contact Info

Product

Resources

About

The effects of He clusters on the mechanical properties of Ti₃AC₂ (A = Ge, Si): first-principles studies