Microstructural developments in Fe-Cr-W low activation ferritic steels under dual beam charged particle irradiation

Hiwatashi, Shunji; Kohno, Yutaka; Asakura, Kentaro

doi:10.1016/0022-3115(91)90187-c

Cited by 18 publications

(4 citation statements)

References 3 publications

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“…Hiwatashi et al [41] dual-beam irradiated Fee9%Cre2%W and Fee7%Cre2%W steels at 15 appm He/dpa to 125 dpa at 400 C. They observed relatively small cavities and swelling values under 0.1%.…”

Section: Multi-beam Irradiations Of Eurofer-97 and Eurofer-ods: Effecmentioning

confidence: 95%

Microstructural characterization of Eurofer-97 and Eurofer-ODS steels before and after multi-beam ion irradiations at JANNUS Saclay facility

Brimbal

Beck

Troeber

et al. 2015

Journal of Nuclear Materials

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a b s t r a c t RAFM steels such as Eurofer-97 and Eurofer-ODS are potential structural materials for future fusion reactors. In order to study their resistance to the high energy neutrons they will be subjected to in this context, we have irradiated these materials in single-, dual-and triple-beam mode to 26 dpa at 400 C. In single-beam mode (Fe ions only), both materials resist swelling but dislocation loops form. For dual-(Fe and He ions) and triple-beam (Fe, He and H) modes, the same dislocation loop microstructure is observed as for the single-beam mode, but small cavities form, aided by the presence of gases. Despite the formation of cavities, swelling is very low for the present conditions. The influence of ODS particles on swelling is briefly discussed.

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“…Hiwatashi et al [41] dual-beam irradiated Fee9%Cre2%W and Fee7%Cre2%W steels at 15 appm He/dpa to 125 dpa at 400 C. They observed relatively small cavities and swelling values under 0.1%.…”

Section: Multi-beam Irradiations Of Eurofer-97 and Eurofer-ods: Effecmentioning

confidence: 95%

Microstructural characterization of Eurofer-97 and Eurofer-ODS steels before and after multi-beam ion irradiations at JANNUS Saclay facility

Brimbal

Beck

Troeber

et al. 2015

Journal of Nuclear Materials

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“…It should be noted in addition that 470 °C might not be the temperature of maximum swelling under ion beam conditions as the temperature of maximum swelling of FM steels is scarcely documented versus dose rate. For example Hiwatashi found the peak swelling temper ature was near 450 C for a variety of Fe-Cr alloys following high dose dual ion irradiation [69].…”

Section: Swelling Under Fusion Neutron Spectrum (~10 Appmmentioning

confidence: 99%

Materials testing facilities and programmes for fission and ion implantation damage

et al. 2017

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Currently there is no fusion neutron dedicated source with a high enough flux to mimic irradiation conditions relevant to those to be experienced by the First Wall in a fusion reactor. Nevertheless, very valuable information can be obtained from existing irradiation sources, in particular Materials Test Reactors, Fast neutron reactors and Ion accelerators. Partial information is provided by these irradiation facilities that can be used to down select main materials candidates for DEMO fusion reactors and evaluate their performance under limited conditions. Modelling is an indispensable tool to interpret all the available information and build a test matrix of experiments to be carried out in a dedicated fusion neutron source.Available tools for testing materials exposed to ion or neutron irradiation, including their advantages and limitations when mimicking fusion conditions, are discussed in this paper. Next generation of fusion devices, such as DEMO, will need the input provided by a dedicated fusion neutron source to enable them to proceed in an efficient and safe manner to reach their full mission and performance.

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“…One of the creep tests, the Initial Strain Parameter Technique (ISPT) for securing repair, maintenance, cost and life loss has been made. In this method, the prediction time of long time creep life at high temperature can be dramatically reduced due to a short time experiment [3,4].…”

Section: Introductionmentioning

confidence: 99%

Creep Life Prediction of Waspaloy Using the Initial Strain Parameter Technique

Kim

Kong

Jung

et al. 2007

KEM

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The purpose of this study is to investigate the high temperature creep life of Waspaloy using the Initial Strain Parameter Technique (ISPT). The creep tests were performed at the elevated temperatures from 550oC to 700 oC. Constant stress creep tests were carried out in the experiment. The initial strain was measured for one minute after loading. The creep life of Waspaloy was calculated using the creep life prediction equation of ISPT. The confidence level between the experimental rupture time and the calculated rupture time using the ISPT is within 95%. So, the results show that the creep life prediction by the ISPT was a good agreement with LMP method.

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Microstructural developments in Fe-Cr-W low activation ferritic steels under dual beam charged particle irradiation

Cited by 18 publications

References 3 publications

Microstructural characterization of Eurofer-97 and Eurofer-ODS steels before and after multi-beam ion irradiations at JANNUS Saclay facility

Microstructural characterization of Eurofer-97 and Eurofer-ODS steels before and after multi-beam ion irradiations at JANNUS Saclay facility

Materials testing facilities and programmes for fission and ion implantation damage

Creep Life Prediction of Waspaloy Using the Initial Strain Parameter Technique

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