Behavior of helium in steel 16Cr12W2VTaB under various implantation temperatures

Chernov, I. I.; Binyukova, S. Yu.; Kalin, B.A.; Win, Myo Htet; Swe, Than; Chubarov, S.V.; Kalashnikov, A. N.; Ioltukhovskiy, A.G.; Leontyeva-Smirnova, M. V.

doi:10.1016/j.jnucmat.2007.03.115

Cited by 7 publications

(2 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The extension of the specimen was monitored in a high accuracy of several micrometers with two linear variable differential transformers, each connected to a rotary encoder. Judging from the previous reports, 16,17) almost all helium atoms injected are expected to be retained in the specimen till the end of fatigue tests. Same fatigue tests have been carried out for the control specimens which were not irradiated but underwent an annealing to give the thermal exposure during implantation.…”

Section: Methodsmentioning

confidence: 76%

Fatigue Properties of Helium Injected F82H-IEA Heat Material

2009

View full text Add to dashboard Cite

In order to contribute to the development of first wall/blanket structural materials in nuclear fusion reactors, we have assessed the influence of nuclear-transmutational helium, which is widely known to often induce grain boundary embrittlement at high temperatures, on fatigue properties of a candidate reduced-activation martensitic steel, IEA (International Energy Agency) version of F82H (Fe-8%Cr-2%W-0.2%V-0.04%Ta). Utilizing -particles from an accelerator, helium was introduced into specimens at 823 K to a concentration of about 100 appmHe. Through the subsequent fatigue tests at the same temperature, it has been demonstrated that both fatigue life and gauge extension to failure were not significantly deteriorated by helium. The appearance of fracture surfaces remained perfectly ductile and transgranular after helium implantation and no indication of grain boundary decohesion was detected. These results would reflect prominent resistance to the heliumembrittlement in this kind of steel and suggests their potential for future fusion applications.

show abstract

Section: Methodsmentioning

confidence: 76%

Fatigue Properties of Helium Injected F82H-IEA Heat Material

2009

View full text Add to dashboard Cite

show abstract

“…The helium desorption spectra of samples irradiated by He + -and H + -ions are characterized by one intense peak for the austenitic steel and by two intense peaks for the ferritic-martensitic steel [13] and by some difficult-to-resolute additional peaks. It is well known [3,14] that at a fluence of irradiation by He + -ions up to 5 · 10 20 m À2 , the release of helium mainly occurs by the mechanism of bubble migration, coalescence during the migration and the release of bubbles from the surface, creating a 'pin-hole' structure.…”

Section: Resultsmentioning

confidence: 99%