Diffusion processes in the FeNi system

Million, B.; Růžičková, Jana; Velíšek, J.; Vřešťál, Jan

doi:10.1016/0025-5416(81)90084-7

Cited by 102 publications

(42 citation statements)

References 26 publications

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“…18). While Ni bulk diffusion was found to depend only slightly on the composition of the -FeNi alloys and is similar to Ni diffusivity in pure -Fe, 46) a similar trend is expected also for GB diffusion in such alloys. Figure 18 suggests that Ni GB diffusivity in nanocrystalline GBs of the -Fe-40 mass%Ni alloy is close to that in conventional coarse-grained -Fe.…”

Section: Gb Diffusion In Nanocrystalline Fe-ni Alloysupporting

confidence: 67%

Grain Boundary Diffusion in Metals: Recent Developments

Herzig¹,

Divinski²

2003

Mater. Trans.

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An overview on recent progress in grain boundary (GB) diffusion study is presented with emphasis on physical phenomena encountered in GB diffusion experiments such as the linear and non-linear segregation effects. Systematic investigations on pure and alloyed poly-and bicrystals gave conclusive information on the solute segregation behavior and allowed to extract the segregation isotherm solely from GB diffusion studies. Recent progress in fundamental understanding of diffusion processes in two-scale materials with two types of short-circuit diffusion paths is discussed on the basis of GB self-diffusion experiments and Monte-Carlo simulations in powder sintered nanocrystalline material.

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Section: Gb Diffusion In Nanocrystalline Fe-ni Alloysupporting

confidence: 67%

Grain Boundary Diffusion in Metals: Recent Developments

Herzig¹,

Divinski²

2003

Mater. Trans.

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“…For example, the normalized activation energy for the quinary NiCoFeCrPd is smaller than most other alloys containing less alloying elements. Furthermore, it needs to be emphasized that the uncertainties of diffusion parameters from different diffusion experiments or data analysis procedures can be inevitably large, as about one order for the diffusion coefficient and 15% for the activation energy (Million et al, 1981;Dabrowa et al, 2016;Miracle and Senkov, 2017;Jin et al, 2018). To this end, the difference in diffusion kinetics with respect to the number of alloying elements is further weakened.…”

Section: Mass Transport Properties: Atomic Diffusion Behaviormentioning

confidence: 99%

Single-Phase Concentrated Solid-Solution Alloys: Bridging Intrinsic Transport Properties and Irradiation Resistance

Jin

Bei

2018

Front. Mater.

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Single-phase concentrated solid-solution alloys (SP-CSAs), including high entropy alloys (HEAs), are compositionally complex but structurally simple, and provide a playground of tailoring material properties through modifying their compositional complexity. The recent progress in understanding the compositional effects on the energy and mass transport properties in a series of face-centered-cubic SP-CSAs is the focus of this review. Relatively low electrical and thermal conductivities, as well as small separations between the interstitial and vacancy migration barriers have been generally observed, but largely depend on the alloying constituents. We further discuss the impact of such intrinsic transport properties on their irradiation response; the linkage to the delayed damage accumulation, slow defect aggregation, and suppressed irradiation induced swelling and segregation has been presented. We emphasize that the number of alloying elements may not be a critical factor on both transport properties and the defect behaviors under ion irradiations. The recent findings have stimulated novel concepts in the design of new radiation-tolerant materials, but further studies are demanded to enable predictive models that can quantitatively bridge the transport properties to the radiation damage.

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“…4 are from Refs. [27,30] and consistent of averages over multiple experimental data sets. Both sets of calculated diffusion coefficients capture the relative relationships between migrating species quite well.…”

Section: Vacancy Mediated Diffusionmentioning

confidence: 99%

“…To provide an optimized model a new high temperature G vf is determined by using the experimental H vf value and fitting S vf to reproduce the averaged experimental diffusion data from Ref. [27] at 1650 K. Both S vf and H vf are assumed to be constant with temperature. The experimental H vf value of 1.79 eV is now used because it was determined from measurements taken at elevated temperature and is more appropriate for high temperature fitting than the 0 K ab initio value.…”

Section: Vacancy Mediated Diffusionmentioning

confidence: 99%

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Ab initio Based Modeling of Radiation Effects in Multi-Component Alloys: Final Scientific/Technical Report

Morgan¹

2010

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Diffusion processes in the FeNi system

Cited by 102 publications

References 26 publications

Grain Boundary Diffusion in Metals: Recent Developments

Grain Boundary Diffusion in Metals: Recent Developments

Single-Phase Concentrated Solid-Solution Alloys: Bridging Intrinsic Transport Properties and Irradiation Resistance

Ab initio Based Modeling of Radiation Effects in Multi-Component Alloys: Final Scientific/Technical Report

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