Cavity formation in aluminium irradiated with a pulsating beam of 225 MeV electrons

Singh, B.N.; Bilde-Sørensen, Jørgen; Leffers, T.; Ozhigov, L. S.; Gann, V. V.

doi:10.1016/0022-3115(84)90653-6

“…Moreover, some observations were in contradiction with the SRT and BEK model. These include higher swelling rates near grain boundaries than in the grain interior in the following cases: high purity copper and aluminium irradiated with fission neutrons or 600 MeV protons (see original references in reviews [18,19]); aluminium irradiated with 225 MeV electrons [20]; neutron-irradiated nickel [21] and stainless steel [22]. Furthermore, the swelling rate at very low dislocation density in copper is higher [23][24][25], and the dependence of the swelling rate on the densities of voids and dislocations is different [26], than predicted by the SRT.…”

Section: Introductionmentioning

confidence: 99%

Unlimited damage accumulation in metallic materials under cascade-damage conditions

Barashev

¹

,

Golubov

²

2009

Philosophical Magazine

View full text Add to dashboard Cite

“…Moreover, some observations were in contradiction with the SRT and BEK model. These include higher swelling rates near grain boundaries than in the grain interior in the following cases: high purity copper and aluminium irradiated with fission neutrons or 600 MeV protons (see original references in reviews [18,19]); aluminium irradiated with 225 MeV electrons [20]; neutron-irradiated nickel [21] and stainless steel [22]. Furthermore, the swelling rate at very low dislocation density in copper is higher [23][24][25], and the dependence of the swelling rate on the densities of voids and dislocations is different [26], than predicted by the SRT.…”

Section: Introductionmentioning

confidence: 99%

Unlimited Damage Accumulation in Metallic Materials Under Cascade-Damage Conditions

Barashev

¹

,

Golubov²

2008

View full text Add to dashboard Cite

Most experiments on neutron or heavy-ion cascade-produced irradiation of pure metals and metallic alloys demonstrate unlimited void growth as well as development of the dislocation structure. In contrast, the theory of radiation damage predicts saturation of void swelling at sufficiently high irradiation doses and, accordingly, termination of accumulation of interstitial-type defects. It is shown in the present paper that, under conditions of steady production of one-dimensionally (1-D) mobile clusters of selfinterstitial atoms (SIAs) in displacement cascades, any one of the following three conditions can result in indefinite damage accumulation. First, if the fraction of SIAs generated in the clustered form is smaller than some finite value of the order of the dislocation bias factor. Second, if solute, impurity or transmuted atoms form atmospheres around voids and repel the SIA clusters. Third, if spatial correlations between voids and other defects, such as second-phase precipitates and dislocations, exist that provide shadowing of voids from the SIA clusters. The driving force for the development of such correlations is the same as for void lattice formation and is argued to be always present under cascade-damage conditions. It is emphasised that the mean-free path of 1-D migrating SIA clusters is typically at least an order of magnitude longer than the average distance between microstructural defects; hence spatial correlations on the same scale should be taken into consideration. A way of developing a predictive theory is discussed. An interpretation of the steady-state swelling rate of ~1%/dpa observed in austenitic steels is proposed

show abstract

Impact of glissile interstitial loop production in cascades on defect accumulation in the transient

Trinkaus¹,

Singh²,

Foreman³

1993

Journal of Nuclear Materials

View full text Add to dashboard Cite

Cavity formation in aluminium irradiated with a pulsating beam of 225 MeV electrons

Cited by 18 publications

References 2 publications

Unlimited damage accumulation in metallic materials under cascade-damage conditions

Unlimited damage accumulation in metallic materials under cascade-damage conditions

Unlimited Damage Accumulation in Metallic Materials Under Cascade-Damage Conditions

Impact of glissile interstitial loop production in cascades on defect accumulation in the transient

Contact Info

Product

Resources

About