Diffusion Path Theorems for Ternary Diffusion Couples

Morral, J. E.

doi:10.1007/s11661-011-1026-z

Cited by 25 publications

(4 citation statements)

References 25 publications

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“…The shape of the diffusion path is S-shaped. This agrees with the results of the diffusion path in the single-phase region reported in the literature [21]. So Al2Y is the only newly formed phase in the diffusion path.…”

Section: Diffusion Pathsupporting

confidence: 92%

“…The microstructure prediction of the diffusion process and the qualitative information on the relative diffusion behavior of the components can be realized by diffusion path. Any time on the concentration curve in the diffusion process can be mapped to a ternary isotherm [20,21]. Mg-Al-Y ternary isothermal temperature phase diagram of 400 • C has been determined [22].…”

Section: Diffusion Pathmentioning

confidence: 99%

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Interfacial Reactions between Mg-40Al and Mg-30Y Master Alloys

Dai

Jiang

Xie

et al. 2020

Metals

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Interfacial reactions between Mg-40Al and Mg-30Y master alloys were investigated at intervals of 25 °C in the 350–400 °C by using a diffusion couple method. Noticeable reaction layers were formed at the interfaces of the diffusion couples. The concentration profiles of the reaction layers were characterized. The diffusion path of the diffusion couple at 400 °C is constructed on the Mg-Al-Y ternary isothermal temperature phase diagram. The phases of the reaction layer were characterized by X-ray diffraction. The interfacial reaction thermodynamics of diffusion couples were studied. These results indicate that Al2Y is the only new formed intermetallic phase in the reaction layers. The growth constants of the reaction layers were calculated. In the reaction layer II, the integrated interdiffusion coefficients of Al are higher than Y, the diffusion activation energy of Y is higher than that of Al.

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Section: Diffusion Pathsupporting

confidence: 92%

Section: Diffusion Pathmentioning

confidence: 99%

Interfacial Reactions between Mg-40Al and Mg-30Y Master Alloys

Dai

Jiang

Xie

et al. 2020

Metals

View full text Add to dashboard Cite

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“…Astonishingly, evaluation ofD (3) ij 's is still an open problem, therefore, considerable effort has been devoted to the elaboration of approximate techniques of calculation and/or estimation of interdiffusion coefficients [1][2][3][4][5][6][7][8][9][10][11][12][13]. In the simplest cases, the modified Boltzmann-Matano (BM) [1,2] and Hall's (HM) [3] analyses were applied.…”

Section: Introductionmentioning

confidence: 99%

Calculation of ternary interdiffusion coefficients using a single diffusion couple

Čermák¹,

Rothová²

2016

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In this paper, the simple numerical algorithm is proposed that enables to estimate ternary interdiffusion coefficients D in systems with not too strongly interacting components. D's are obtained from measurement with a single model diffusion couple. They can be used to predict concentration curves Ci(x) (i = 1, 2, 3) in arbitrary time with numerical errors that are comparable with experimental errors of measurement of ci itself and comply with theoretical constraints following from the linear irreversible thermodynamics. The algorithm does not need any external thermodynamic data and external measurements (e.g., it is not necessary to measure the shift of inert markers in the interface). It can be applied using commonly accessible SW, and it is not time-consuming. Values of D are close to those obtained with the help of much more laborious experimental -also approximate -methods.K e y w o r d s : diffusion, interdiffusion, ternary alloys, transport properties, ternary diffusion coefficients

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“…As a result, the mechanical and physical properties of the multilayer metal are affected. Numerous studies have been performed on the interface reaction and interdiffusion layers metals, [5][6][7][8][9][10][11] in which the diffusion couple is widely used as the model to study the interdiffusion and microstructure of multilayer metal.…”

Section: Introductionmentioning

confidence: 99%

Effects of temperature gradient on the interface microstructure and diffusion of diffusion couples: Phase-field simulation

Li¹,

Wu²,

Liu³

et al. 2015

Chinese Phys. B

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The temporal interface microstructure and diffusion in the diffusion couples with the mutual interactions of temperature gradient, concentration difference and initial aging time of the alloys were studied by phase-field simulation, the diffusion couples are produced by the initial aged spinodal alloys with different compositions. Temporal composition evolution and volume fraction of the separated phase indicates the element diffusion direction through the interface under the temperature gradient. The increased temperature gradient induces a wide single-phase region at two sides of the interface. The uphill diffusion proceeds through the interface, no matter the diffusion directions are up or down to the temperature gradient. For an alloy with short initial aging time, phase transformation accompanying the interdiffusion results in the straight interface with the single-phase regions at both sides. Comparing with the temperature gradient, composition difference of diffusion couple and initial aging time of the alloy show greater effect on the diffusion and interface microstructure.

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Diffusion Path Theorems for Ternary Diffusion Couples

Cited by 25 publications

References 25 publications

Interfacial Reactions between Mg-40Al and Mg-30Y Master Alloys

Interfacial Reactions between Mg-40Al and Mg-30Y Master Alloys

Calculation of ternary interdiffusion coefficients using a single diffusion couple

Effects of temperature gradient on the interface microstructure and diffusion of diffusion couples: Phase-field simulation

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