Zero-flux planes and flux reversals in multicomponent diffusion. Progress report, September 1, 1981-August 31, 1982
Zero-flux planes (ZFP) and flux reversals of individual components have been identified in several single-phase and multiphase diffusion couples assembled with ..cap alpha..(fcc), ..beta..(bcc) and ..gamma..(cubic) Cu-Ni-Zn alloys and annealed at 775/sup 0/C. ZFP compositions correspond to intersection points of diffusion paths and isoactivity lines drawn through the terminal alloys on an isotherm. In multiphase couples, flux reversals can also occur discontinuously at an interface with or without additional ZFP's in the single-phase layers on either side of the interface. Interdiffusion studies have also been carried out with ..gamma..(fcc) Fe-Ni-Cr alloys at 1100/sup 0/C for the identification of ZFP's, and the calculation of ternary interdiffusion coefficients as functions of composition. Two phase ..cap alpha..(bcc)/..gamma..(fcc) couples are also being studied for ZFP and diffusion structure development in the Fe-Ni-Cr system. The development of ZFP's and diffusion paths is also explored in finite and multiple sandwich couples in the Cu-Ni-Zn system at 775/sup 0/C in order to understand the influence of ZFP's on elemental distributions.
- Research Organization:
- Purdue Univ., Lafayette, IN (USA). School of Materials Engineering
- DOE Contract Number:
- AC02-81ER10814
- OSTI ID:
- 5154881
- Report Number(s):
- DOE/ER/10814-4; ON: DE82019427
- Country of Publication:
- United States
- Language:
- English
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