Zero-flux planes and flux reversals in multicomponent diffusion. Progress report, January 1, 1981-August 31, 1981. [Cu-Ni-Zn; Fe-Ni-Cr]

Technical Report · Sat Aug 01 04:00:00 EDT 1981

OSTI ID:6271523

Dayananda, M A

The principal area of research is to explore the development and role of the zero-flux planes (ZFP) and flux reversals in both single phase and multiphase diffusion couples in the Cu-Ni-Zn and Fe-Ni-Cr ternary systems. Both single phase and multiphase diffusion couples have been assembled with ..cap alpha..(fcc) and/or ..beta..(bcc) Cu-Ni-Zn alloys with similar thermodynamic activities of either Cu, Ni, or Zn and diffusion annealed at 775/sup 0/C. ZFP's where the interdiffusion flux of one of the components goes to zero have been identified in several couples. The ZFP compositions are found to correspond to intersection points of diffusion paths and isoactivity lines drawn through the terminal alloys on an isotherm. In the second project, similar studies of interdiffusion are underway with ..gamma..(fcc) Fe-Ni-Cr alloys at 1100/sup 0/C for the determination of interdiffusion coefficients and diffusional interactions. In the third project, preliminary sandwich couples where two ZFP's move towards each other are being set up with selected Cu-Ni-Zn alloys at 775/sup 0/C for studies of possible ZFP interaction and regulation of interdiffusion fluxes.

• Research Organization: Purdue Univ., Lafayette, IN (USA). School of Materials Engineering
• DOE Contract Number: AC02-81ER10814
• OSTI ID: 6271523
• Report Number(s): DOE/ER/10814-1; ON: DE81028526
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ALLOYS
CHROMIUM ALLOYS
COPPER ALLOYS
DIFFUSION
IRON ALLOYS
NICKEL ALLOYS
RESEARCH PROGRAMS
VERY HIGH TEMPERATURE
ZINC ALLOYS