Diffusivities and Atomic Mobilities in fcc Cu-Ag-Al Alloys

Wang, Rong; Zhang, Lijun; Lu, Zhao; Du, Yong; Jin, Zhanpeng; Živkovič, Dragana

doi:10.1007/s11669-015-0404-4

Cited by 4 publications

(2 citation statements)

References 30 publications

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“…For symmetrical concentration profiles, the Boltzmann function is the most widely used fitting function, which is expressed as [16][17][18][19]: (7) where A 1 , A 2 , x 0 and dx are the parameters to be fitted. x 0 presents the position of Matano plane.…”

Section: The Measured Concentration Profiles and Fitting Functionsmentioning

confidence: 99%

Calculated interdiffusivities resulting from different fitting functions applied to measured concentration profiles in Cu-rich fcc Cu-Ni-Sn alloys at 1073 K

Liu

et al. 2017

J min metall B Metall

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Employing six groups of bulk diffusion couples together with electron probe microanalysis technique, the compositiondependences of ternary interdiffusion coefficients in Cu-rich fcc Cu-Ni-Sn alloys at 1073 K were determined via the Whittle and Green method. Different fitting functions applied to the measured concentration profiles are utilized to extract the interdiffusion coefficients of fcc Cu-Ni-Sn alloys. The errors for the obtained interdiffusivities are evaluated by a scientific method considering the error propagation. The calculated diffusion coefficients using the Boltzmann and additive Boltzmann functions are found to be with reasonable errors and show a general agreement with those using other fitting functions. Based on the Boltzmann and additive Boltzmann functions, the interdiffusivities in Cu-rich fcc Cu-Ni-Sn alloys at 1073 K are obtained and validated by thermodynamic constraints. The Boltzmann and additive Boltzmann functions are recommended to be used for the fitting of measured concentration profiles in other ternary systems for the sake of extracting ternary diffusivities.

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Section: The Measured Concentration Profiles and Fitting Functionsmentioning

confidence: 99%

Calculated interdiffusivities resulting from different fitting functions applied to measured concentration profiles in Cu-rich fcc Cu-Ni-Sn alloys at 1073 K

Liu

et al. 2017

J min metall B Metall

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“…The solid semi-infinite diffusion couple is the frequently used experimental technique for measurement of interdiffusion coefficients in the target phase. Numerous investigations on the measurement of interdiffusion coefficients by using the semi-infinite diffusion couple together with either the traditional Bolzmann-Matano method and its variants [3][4][5] for binary systems or the Matano-Kirkaldy method [6] for ternary systems can be found in the literature [2,[7][8][9][10][11][12]. Sometimes, when the total thickness of the diffusion couple is not large enough or the diffusion time is too long, diffusion distance may exceed the entire domain.…”

Section: Introductionmentioning

confidence: 99%

Application of numerical inverse method in calculation of composition-dependent interdiffusion coefficients in finite diffusion couples

et al. 2017

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The previously developed numerical inverse method was applied to determine the composition-dependent interdiffusion coefficients in single-phase finite diffusion couples. The numerical inverse method was first validated in a fictitious binary finite diffusion couple by pre-assuming four standard sets of interdiffusion coefficients. After that, the numerical inverse method was then adopted in a ternary Al-Cu-Ni finite diffusion couple. Based on the measured composition profiles, the ternary interdiffusion coefficients along the entire diffusion path of the target ternary diffusion couple were obtained by using the numerical inverse approach. The comprehensive comparison between the computational diffusion properties and the experimental data indicates that the numerical inverse method is also applicable to the high-throughput determination of the composition-dependent interdiffusion coefficients in finite diffusion couples.

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Diffusivities, atomic mobilities, and simulation of ternary eutectic solidification in the Ag–Al–Cu melts

et al. 2016

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Diffusivities and Atomic Mobilities in fcc Cu-Ag-Al Alloys

Cited by 4 publications

References 30 publications

Calculated interdiffusivities resulting from different fitting functions applied to measured concentration profiles in Cu-rich fcc Cu-Ni-Sn alloys at 1073 K

Calculated interdiffusivities resulting from different fitting functions applied to measured concentration profiles in Cu-rich fcc Cu-Ni-Sn alloys at 1073 K

Application of numerical inverse method in calculation of composition-dependent interdiffusion coefficients in finite diffusion couples

Diffusivities, atomic mobilities, and simulation of ternary eutectic solidification in the Ag–Al–Cu melts

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