An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Comparison of Experimental and Simulated Multicomponent Ni-base Superalloy Diffusion Couples
Published
Author(s)
Carelyn E. Campbell, J C. Zhao, M F. Henry
Abstract
A multicomponent diffusion mobility database for the Ni-rich fcc phase [2002Cam] is evaluated by comparing diffusion simulations to two experimental multicomponent Ni-base superalloy diffusion couples, Ni/Rene-88 and IN718/Rene-88. The diffusion simulations use composition-dependent thermodynamic and diffusion quantities with a finite difference code to simulate single phase and multiphase planar layers. The multiphase layers consist of a matrix phase and a disperse phase. The calculated composition profiles, interdiffusion coefficients, phase fraction profiles and location of Kirdendall porosity are compared to experimental results. To treat diffusion in the IN718 alloy, iron and carbon are added to the existing diffusion mobility database using previous assessment work and adding the Fe-Al and Fe-Co assessments.
Campbell, C.
, Zhao, J.
and Henry, M.
(2004),
Comparison of Experimental and Simulated Multicomponent Ni-base Superalloy Diffusion Couples, Journal of Phase Equilibria and Diffusion
(Accessed June 2, 2023)