Электронный каталог

Статья

Palacheva, V.V.
Carbon Diffusivity by Means of Snoek Relaxation in Ternary Fe-26 at%(Al+Ga) Alloys with Different Al/Ga Ratio / V.V.Palacheva, J.Cifre, H.W.Chang, A.M.Balagurov, I.S.Golovin // Journal of Alloys and Compounds [Electronic resource]. – 2024. – Vol. 988. – P. 174328. – URL: https://doi.org/10.1016/j.jallcom.2024.174328. – Bibliogr.: 48.

Anelastic relaxation in the temperature range from 0 to 300&sup(0)C (0.1–30 Hz) in ternary Fe-26(Al+Ga)-0.1Tb alloys is experimentally studied and analysed with respect to binary Fe&sub(3)Al and Fe&sub(3)Ga intermetallic compounds. The Snoek-type relaxation due to cyclic stress-induced carbon atom jumps between octahedral interstices in the *a-Fe based solid solution (Fe-C-Al,Ga) is recorded and analysed. The Snoek-type effect in the ternary Fe-26(Al+Ga)-0.1Tb alloys has a higher activation energy (up to ∼1.2 eV) in comparison to *a-Fe-C (0.83 eV). The relaxation effect demonstrated significant broadening with respect to Debye peak with a single relaxation time and splitting into two separated peaks at a certain ratio Al/Ga. Snoek-type effect provides a unique opportunity to measure C atom diffusivity at relatively low temperatures. Influence of the chemical composition and the measuring frequency on the activation parameters in Fe-26(Al+Ga)-0.1Tb alloys are reported and analysed to estimate the impact of Al and Ga atoms on C atom diffusivity in *a-Fe based solid solution.



Спец.(статьи,препринты) = С 342 г1 - Замедление и диффузия нейтронов. Дифракция
Спец.(статьи,препринты) = С 342 г2 - Взаимодействие нейтронов с конденсированными средами. Магнитные взаимодействия
Спец.(статьи,препринты) = С 332.8 - Синхротронное излучение. Лазеры на свободных электронах. Получение и использование рентгеновских лучей
ОИЯИ = ОИЯИ (JINR)2024
Бюллетени = 33/024