Interdiffusion in. beta. phase Cu--Al alloys

Journal Article · Wed Jun 01 00:00:00 EDT 1983 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.332475· OSTI ID:6099796

Romig, Jr, A D

The diffusion behavior of ..beta.. phase Cu--Al has been studied at 800, 850, and 950 /sup 0/C using the experimental approach and analysis scheme of Kirkendall and Darken. Diffusion couples were made using the window frame technique and concentration profiles were determined by electron probe microanalysis. The chemical diffusion coefficient, D was found to be D = 0.65 exp(-42200/RT) cm/sup 2//s. The diffusivity was observed to be independent of composition over the range 11--13 wt. % Al. The self-diffusion coefficients D/sub Cu/ and D/sub Al/ were determined to be D/sub Al/ = 0.13 exp(-38900/RT) cm/sup 2//s and D/sub Cu/ = 2.2 exp(-43400/RT) cm/sup 2//s. All activation energies are in calories/mole.

• Research Organization: Sandia National Laboratories, Albuquerque, New Mexico 87185
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 6099796
• Journal Information: J. Appl. Phys.; (United States), Vol. 54:6
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
DIFFUSION
COPPER ALLOYS
ACTIVATION ENERGY
ELECTRON MICROPROBE ANALYSIS
EXPERIMENTAL DATA
MATHEMATICAL MODELS
PHASE STUDIES
QUANTITY RATIO
SPATIAL DISTRIBUTION
THEORETICAL DATA
VERY HIGH TEMPERATURE
ALLOYS
CHEMICAL ANALYSIS
DATA
DISTRIBUTION
ENERGY
INFORMATION
MICROANALYSIS
NUMERICAL DATA
360104* - Metals & Alloys- Physical Properties