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Communication Dans Un Congrès Année : 2013

Influence of dual beam nickel and helium irradiation on the microstructure of a 304L austenitic stainless steel

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Cecilie Duhamel
Jérôme Crépin
L. Fournier
  • Fonction : Auteur
Morgane Le Millier
  • Fonction : Auteur
  • PersonId : 762644
  • IdRef : 184963478
Mohamed Sennour

Résumé

In-situ irradiation experiments on a commercial 304L austenitic stainless steel were conducted in the JANNuS platform (CSNSM-Orsay) under single beam conditions (500 keV Ni+ ions with a flux of 5.5×1010 ions.cm-2.s-1 and a dose rate of 4×10-4 dpa.s-1) as well as dual beam conditions (500 keV Ni+ ions with a flux of 5.5×1010 ions.cm-2.s-1 and a dose rate of 10-4 dpa.s-1 and 20 keV He+) up to 2 dpa with a helium appm/dpa ratio of 35 appm/dpa and 750 appm/dpa at 500°C and 400°C. In-situ TEM observations during single beam irradiation suggest no mobility of visible clusters. As expected, Frank loop density and size were, respectively, much higher and much lower at 400°C relative to 500°C Helium was observed to have no effect on the evolution of the microstructure at 500°C with a helium appm/ dpa ratio of 35 appm/dpa. However, helium implantation with a helium appm/ dpa ratio of 750 appm/dpa led to a small decrease in the Frank loop density together with a small increase in the cavity density at 500°C.
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Dates et versions

hal-00999028 , version 1 (03-06-2014)

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  • HAL Id : hal-00999028 , version 1

Citer

Cecilie Duhamel, Alain Barbu, Jérôme Crépin, Brigitte Décamps, L. Fournier, et al.. Influence of dual beam nickel and helium irradiation on the microstructure of a 304L austenitic stainless steel. 6th international conference on environmental degradation of materials in nuclear power systems - water reactors, Aug 2013, Asheville, United States. 15 p. ⟨hal-00999028⟩
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