Interdiffusion and atomic mobility in hcp Mg–Al–Sn alloys

Research output: Journal contributionsJournal articlesResearchpeer-review

Authors

  • Yuhui Zhang
  • Changfa Du
  • Yuling Liu
  • Shiyi Wen
  • Shuhong Liu
  • Yuanding Huang
  • Norbert Hort
  • Yong Du

For the purpose of studying the diffusion behavior of hcp Mg–Al–Sn alloys, several Mg–Al, Mg–Sn and Mg–Al–Sn alloys were prepared and assembled into ten diffusion couples annealed at 723, 773, 823 K separately. With the aid of the electron probe microanalyzer technique and efficient CALTPP (CALculation of ThermoPhysical Properties) software, the composition dependent interdiffusivities at various temperatures were calculated. After that, the atomic mobilities were evaluated according to the obtained diffusivities in conjunction with available thermodynamic descriptions of the system in literature. Extensive comparisons between the model-predicted and experimental data on diffusion behaviors indicate the reliability of the presently obtained kinetic parameters. It worth noting that the measured composition profiles and diffusion paths can be logically predicted merely with two ternary interaction parameters. The currently obtained atomic mobilities will serve the high-throughput computation design for multi-component Mg alloys.

Original languageEnglish
Article number159517
JournalJournal of Alloys and Compounds
Volume871
Number of pages11
ISSN0925-8388
DOIs
Publication statusPublished - 05.08.2021

    Research areas

  • Atomic mobility, Diffusion coefficients, Diffusion couple, Mg–Al–Sn alloy, Novel numerical inverse method, Ternary diffusivities
  • Engineering

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