Examination of Multicomponent Diffusion Between Two Ni-Base Superalloys

Published

September 11, 2005

Author(s)

Carelyn E. Campbell, William J. Boettinger, T Hansen, P Merewether, B A. Mueller

Abstract

The interdiffusion at 1293 degree C between two multicomponent Ni-base superalloys, Rene-N4 and ene-N5, was assessed by measuring the composition vs. distance curves and by comparing the measured curves to predictions obtained using a diffusion mobility database recently published by Campbell et al. (Acta Mat. 50 (2002) 775-792). Although the diffusion database was constructed primarily from binary diffusion data, the extrapolation to the multicomponent systems gave good results in the prediction of the measured composition vs. distance curves. In addition, the location of the Kirkendall porosity on the Rene-N4 side of the diffusion couple was successfully predicted. This initial success points to the suitability of the general approach to the development of diffusion databases and to the desirability for additional database refinements including possible efforts from the first principles community.

Citation

IAC Conference

Pub Type

Journals

Keywords

multicomponent diffusion, Ni-base superalloy

Citation

Campbell, C. , Boettinger, W. , Hansen, T. , Merewether, P. and Mueller, B. (2005), Examination of Multicomponent Diffusion Between Two Ni-Base Superalloys, IAC Conference (Accessed April 23, 2024)