Interdiffusion in the BCC phase of the U−Pu−Zr system

Computational study of atomic mobility for the bcc phase of the U–Pu–Zr ternary system

“…9 and 10 with the reported data from Alekseev et al [6] at 1073 K and from Shmakov and Smirnov [7] at 1173 K, respectively. The agreements are satisfactory.…”

“…Alekseev et al [6] and Shmakov and Smirnov [7] reported a theoretical study of the interdiffusion behavior for the bcc alloys at the U-rich corner at 1073 and 1173 K, respectively. The calculations showed that both main and cross interdiffusion coefficients exhibit a strong concentration dependence and most of the cross coefficients are negative.…”

“…There is some experimental diffusion data available for the U-Pu-Zr bcc alloys, including tracer, impurity, and interdiffusion coefficients [6,7,[10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28]. In the subsections that follow, the data is evaluated system by system.…”

“…So far, there is a thermodynamics database [1,5] and some experimental diffusion data [6,7] available for the U-Pu-Zr system, however, no atomic mobility database is available yet. Therefore, the objectives of the present study are to evaluate the diffusion data to assess the atomic mobility for the bcc phase of the U-Pu-Zr ternary, and then use the validated atomic mobility database to predict a full diffusion picture for the bcc U-Pu-Zr ternary alloys.…”

“…65 -0.65 -0.71 -0.71 -0.35 -0.35 -0.13 -0.13 -2.6 -2.6 -2.3 -2.3 -1.1 -1.1 -0.5 -7.7 -5.8 -5.8 -2.8 -2.8-0.05 -0.Calculated interdiffusion coefficients (italic numbers) of the ternary U-Pu-Zr bcc alloys at 1073 K compared with the theoretical calculation[6].…”