Abstract
By combining solid/solid diffusion couples and the electron probe microanalysis technique, the interdiffusivities in fcc Ni-Cu-Si alloys at 1373 K were experimentally determined via the Matano-Kirkaldy method in the present work. Based on the reliable thermodynamic description of fcc phase in the Ni-Cu-Si system available in the literature as well as the ternary diffusion coefficients measured in this work, the atomic mobilities in fcc Ni-Cu-Si alloys were assessed by utilizing the DICTRA (DIffusion Controlled TRAnsformation) software package. The calculated interdiffusivities based on the assessed atomic mobilities agree well with all the experimental data. The reliability of the presently obtained atomic mobilities was further verified by comprehensive comparisons between different kinds of model-predicted diffusion properties and the measured data, including the concentration penetration profiles, interdiffusion flux profiles, and diffusion paths.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
