Swelling of neutron-irradiated vanadium alloys

Loomis, B.A.; Smith, D.L.; Garner, F.А.

doi:10.1016/0022-3115(91)90202-i

Cited by 59 publications

(25 citation statements)

References 6 publications

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“…The density change data are shown in Table 2 to exposure levels ranging from 42 to 77 dpa at temperatures from 400 to 600°C in earlier studies, and did not exhibit _;uchfragility (13,14).…”

Section: Methodsmentioning

confidence: 79%

Influence of transmutation on microstructure, density change, and embrittlement of vanadium and vanadium alloys irradiated in HFIR

Ohnuki

Takahashi

Shiba

et al. 1995

Journal of Nuclear Materials

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Addition of 1 at.% nickel to vanadium and V-10Ti, followed by irradiationalong with the nickel-free metals in HFIR to 2.3 x 1022n cm"2, E>0.1MeV (corresponding to 17.7 dpa) at 400*C, has been used to study the influence of helium on microstructural evolution and embrittlement. Approximately 15.3% of the vanadium transmuted to chromium in these alloys. The-50 appm helium generated from the : 58Ni(n,_,)59Ni(n,a)56Fe sequence was found to exert much less influence than either the nickel directly or the chromium formed by transmutation.

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Section: Methodsmentioning

confidence: 79%

Influence of transmutation on microstructure, density change, and embrittlement of vanadium and vanadium alloys irradiated in HFIR

Ohnuki

Takahashi

Shiba

et al. 1995

Journal of Nuclear Materials

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“…2 , Неласов И. В. 1 До настоящего времени остается не исследованным вопрос влияния легирующих элементов на стадию развития каскада атомных смещений в сплавах на основе ванадия, которые рассматриваются в качестве одной из перспективных групп радиационно-стойких материалов для термоядерной энергетики. В данной работе проводится молекулярно-динамическое исследование процесса развития каскадов атомных смещений в чистом ванадии и сплавах V-Ti с концентрациями титана 4, 8 и 16 % при энергиях первично выбитого атома 5, 10 и 20 кэВ.…”

Section: влияние титана на первичную радиационную повреждаемость и раunclassified

“…Among these, the alloys with the titanium concentration of 4 -5 % are characterized by the minimum value of irradiation-induced swelling. This fact was established in the experiments on radiation treatment of V-Ti alloys, where the concentration of Ti was changed from 0 to 20 % [1]. The contribution of the cascade development stage to the effect has not been studied yet due to the limitations in experimental approaches to obtaining detailed atomic level information on the processes in materials.…”

Section: Introductionmentioning

confidence: 99%

Effect of titanium on the primary radiation damage and swelling of vanadium-titanium alloys

Boev¹,

Zolnikov²,

Nelasov³

et al. 2018

LoM

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Until now, the problem of the effect of alloying elements on the development stage of atomic displacement cascades in vanadium-based alloys, which are considered as a promising group of radiation-resistant materials for thermonuclear energy, has not been investigated. In this paper, a molecular dynamic study of the atomic displacement cascade development in pure vanadium and V-Ti alloys with titanium concentrations of 4, 8, and 16 % is carried out for energies of a primary knocked-out atom of 5, 10, and 20 keV. The interactions between atoms in the V-Ti system are specified in the framework of a method developed earlier for modeling systems with metallic and covalent types of chemical bond. The interactions at small interatomic distances are taken into account for screened ions which allows one to correctly simulate atomic systems under high-energy conditions. The simulations were carried out at 700 K that corresponds to the lower limit of the operating temperature range of the alloys. The purpose of the work is to establish the features of the effect of titanium on the cascade characteristics and the possibility of reducing the radiation swelling by titanium doping. The main characteristics of cascades considered in this paper are the number of generated defects at different stages of a cascade and the structure of the radiation-damaged region. The distribution of surviving defects of vacancy and interstitial types is calculated in accordance with the concentration of titanium and energy of a primary knocked-out atom. It has been proved that titanium doping results in a decrease in the size of the vacancy clusters formed after cascades.

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“…Filled Symbols -non-DHCE : after irradiation at 427400°C in the DHCE (14)(15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25)(26)(27) and in non-DHCE (14-33 dpa).…”

Section: Effects Of Test Temperaturementioning

confidence: 99%

Swelling of neutron-irradiated vanadium alloys

Cited by 59 publications

References 6 publications

Influence of transmutation on microstructure, density change, and embrittlement of vanadium and vanadium alloys irradiated in HFIR

Influence of transmutation on microstructure, density change, and embrittlement of vanadium and vanadium alloys irradiated in HFIR

Effect of titanium on the primary radiation damage and swelling of vanadium-titanium alloys

Lithium-vanadium advanced blanket development. ITER final report on U.S. contribution: Task T219/T220

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