Effect of chromium on void swelling in ion irradiated high purity Fe–Cr alloys
| Autor: | A. Barbu, E. Meslin, J. Henry, B. Décamps, Arunodaya Bhattacharya, S. Poissonnet |
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| Přispěvatelé: | CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), This work was supported by the joint program 'CPR ODISSEE' funded by AREVA, CEA, CNRS, EDF and Mécachrome under contract No. 070551, Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Void (astronomy)
Materials science Polymers and Plastics [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th] Iron Analytical chemistry chemistry.chemical_element 02 engineering and technology [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] 01 natural sciences Ion Chromium 0103 physical sciences transmission electron microscopy (TEM) medicine Neutron Irradiation cavity nucleation 010302 applied physics helium Metallurgy ion irradiation Metals and Alloys 021001 nanoscience & nanotechnology Microstructure Electronic Optical and Magnetic Materials chemistry Transmission electron microscopy Ceramics and Composites Swelling medicine.symptom 0210 nano-technology |
| Zdroj: | Acta Materialia Acta Materialia, Elsevier, 2016, 108, pp.241-251. ⟨10.1016/j.actamat.2016.02.027⟩ Acta Materialia, 2016, 108, pp.241-251. ⟨10.1016/j.actamat.2016.02.027⟩ |
| ISSN: | 1359-6454 |
| DOI: | 10.1016/j.actamat.2016.02.027⟩ |
| Popis: | International audience; The concentration of chromium (Cr) plays an important role on the radiation induced microstructure of the binary Fe–Cr alloys, in particular on the formation of cavities leading to void swelling of the material. Many fast neutron irradiations were performed in the past to understand the swelling variation as a function of the Cr content. However, due to some contrasting results in the literature, the trend is not yet clear. For that purpose, we have performed self-ion irradiations to high doses (>100 dpa) at 773 K, in single beam mode (damage by 2 MeV self ions) and dual beam mode (damage by 2 MeV self-ions and co-implantation of 2 MeV helium ions with continuous energy degradation) on a wide range of high purity Fe–Cr alloys with Cr level ranging from 3 wt.% to 14 wt.% and a reference body centred cubic (bcc) iron (Fe). Conventional transmission electron microscopy (TEM) analysis revealed a strong swelling suppression by the addition of 3 wt.% Cr to the Fe matrix. The analysis of the dual beam irradiated samples revealed that the variation of void swelling as a function of the Cr content is non-monotonic, with a local swelling maxima around 9–10 wt.% Cr. Overall, all the Fe–Cr alloys up to 14 wt.% Cr show much reduced swelling as compared to bcc Fe. No cavities, and hence, swelling, was noted in the single beam irradiated Fe–Cr alloys, while the same in bcc Fe remained high. This elucidates further the large magnitude of swelling reduction by Cr. |
| Databáze: | OpenAIRE |
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