Mutual diffusion in the titanium-vanadium-niobium system

Aitbaev, B. K.; Gryzunov, V. I.; Sokolovskaya, E.M.

doi:10.1007/bf00897962

Cited by 2 publications

(2 citation statements)

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“…In order to compare the sub-binary systems, there is only one report available on the experimental inter-diffusion coefficients of bcc Ti-Nb-V alloys. [17] However, no composition profiles, diffusion paths, and kinetic parameters of the interaction are reported. Hence, it is necessary to perform a thorough assessment of atomic mobilities in ternary bcc Ti-Nb-V alloys, using the very recent experimental data.…”

Section: Diffusion Datamentioning

confidence: 99%

“…Up to now, no atomic mobility database of bcc Ti-Nb-V ternary system is available, even though the experimental diffusivities of the bcc Ti-Nb-V alloy have been investigated by Aitbeav et al [17] The reason behind this might be the absence of critical thermodynamic database and experimental inter-diffusion coefficients which cause large deviations in their diffusion rates. For instance, the impurity diffusion coefficients of Ti, Nb, V in Nb are 4:6 Â 10 À22 -1:2 Â 10 À18 m 2 /s in the temperature range of 1273-1473 K. This is two or more orders of magnitude smaller than that of Ti, Nb, V in Ti and V over the same temperature range.…”

Section: Introductionmentioning

confidence: 99%

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Assessment of Atomic Mobilities for bcc Phase in the Ti-Nb-V System

Wei

Wang

Song

et al. 2020

J. Phase Equilib. Diffus.

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In this work, diffusion couples of bcc phase Ti-Nb-V have been prepared and annealed at different temperatures such as 1273, 1373, and 1473 K. The concentration profile of each diffusion couple was measured with the help of electron microprobe analysis. In addition, the interdiffusion coefficients were obtained from the concentration profiles of diffusion couples, using numerical inverse and Whittle-Green methods. Combining with the thermodynamic database, the atomic mobilities of Ti, Nb and V in bcc Ti-Nb-V alloys were simulated by DICTRA package. In summary, our simulated atomic mobilities have a nice correlation with the experimental data and can reasonably describe the diffusion phenomena, such as diffusion paths and the concentration profiles of the bcc Ti-Nb-V ternary system.

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Section: Diffusion Datamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%