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Interdiffusion and Atomic Mobilities in fcc Ni-Mo-Ta Alloys

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Abstract

Ternary fcc Ni-Mo-Ta diffusion couples annealed at 1473 and 1573 K have been studied by using electron probe microanalysis. Based on the measured concentration-distance profiles and Whittle–Green method, the interdiffusion coefficients were calculated to critically assess the atomic mobilities by means of DICTRA software package. Comprehensive comparisons between calculated and experimental diffusion coefficients show that the atomic mobilities obtained in this work could well reproduce the experimental data. Reasonable agreements between model-predicted diffusion properties and the experimental data indicated that present mobility database can be used to study the diffusion behavior, such as diffusion paths and concentration-distance profiles in the ternary fcc Ni-Mo-Ta alloys.

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Acknowledgments

This work was supported by National Key R&D Program of China (Grant No. 2017YFB0702901), National Natural Science Foundation of China (Grant No. 51831007), and the Fundamental Research Funds for the Central Universities (Grant No. 20720170038).

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Authors and Affiliations

  1. College of Materials and Fujian Provincial Key Laboratory of Materials Genome, Xiamen University, Xiamen, People’s Republic of China

    C. P. Wang, X. Yu, S. Y. Qin, Z. B. Wei, J. B. Zhang, Y. X. Huang, Y. H. Guo, Y. Lu & X. J. Liu

  2. Department of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen, People’s Republic of China

    X. J. Liu

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  1. C. P. Wang
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  2. X. Yu
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Wang, C.P., Yu, X., Qin, S.Y. et al. Interdiffusion and Atomic Mobilities in fcc Ni-Mo-Ta Alloys. J. Phase Equilib. Diffus. 40, 432–441 (2019). https://doi.org/10.1007/s11669-019-00739-7

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  • DOI: https://doi.org/10.1007/s11669-019-00739-7

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