Effect of defect imbalance on void swelling distributions produced in pure iron irradiated with 3.5 MeV self-ions

Temperature dependent dispersoid stability in ion-irradiated ferritic-martensitic dual-phase oxide-dispersion-strengthened alloy: Coherent interfaces vs. incoherent interfaces

“…The absence of voids at the peak damage region reflects the effect of the defect imbalance caused by ion irradiation with injected interstitials heavily distributed near the peak dpa region [51,52]. On the other hand, more voids are observed in the samples irradiated at 475 C than the samples irradiated at 325 C or 625 C. This agrees with previous determinations of peak swelling temperatures of F/M steels [4,6,7,53].…”

Effect of pre-implanted helium on void swelling evolution in self-ion irradiated HT9

“…This was observed in the majority of conditions, regardless of temperature or presence of helium, which resulted in relatively high values of swelling in the near surface region. A similar result was seen by Shao et al [16]. This behavior cannot be attributed to radiation damage; within the first 300 nm, the dose increases from 0% to 68% of the nominal dose and the He concentration is below the nominal level, as shown in Fig.…”

“…This clearly demonstrates that the effects are confined to the first 300 nm. Shao et al [16] attributed this effect to a defect imbalance near the surface. A vacancy-rich region forms near the surface because of the loss of interstitials due to their higher mobility.…”

Influence of injected interstitials on α′ precipitation in Fe–Cr alloys under self-ion irradiation

“…Figure 2 clearly shows that the depth dependence of α/α decomposition is correlated with the evolution of the injected Fe concentration rather than the damage profile. This behaviour is similar to that observed in the case of void formation [23,24,26,27]. When the contribution of injected Fe becomes more significant, the decomposition decreases.…”

“…Indeed, ions used to irradiate a thick target come to rest at the end of time range in the material as interstitials atoms and could impact diffusion process or the creation of point defect clusters, for example. Prior studies have demonstrated the significant influence of the injected Fe atoms on ion-induced swelling [20][21][22][23][24][25][26][27]. Both experimental and theoretical works showed that injected ions suppress void swelling.…”