Interdiffusion and its size effect in nickel solid solutions of Ni-Co, Ni-Cr and Ni-Ti systems

Jung, Seung Boo; Yamane, Toshimi; Minamino, Yoritoshi; Hirao, Keiichi; Araki, Hideki; Saji, Shigeoki

doi:10.1007/bf00729354

Cited by 114 publications

(22 citation statements)

References 16 publications

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“…2, the calculated Co impurity diffusion in fcc-Ni compares favorably with all available experimental data. [23,25,27,28] The experimental data for the impurity diffusivity of Ni in fcc-Co lie within a narrow band, [23,25,[29][30][31] as shown by the Arrhenius plot of the Ni diffusion in fcc-Co in Fig. 3.…”

Section: Assessment Of Atomic Mobilitymentioning

confidence: 77%

Computational Study of Atomic Mobility for fcc Phase of Co-Fe and Co-Ni Binaries

Cui

Jiang

Ohnuma

et al. 2007

J Phs Eqil and Diff

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Abundant experimental diffusion data in two Co-base binary systems, that is, Co-Ni and Co-Fe, have been assessed to develop the atomic mobility for the face-centered cubic (fcc) phase of the two binaries. The general agreement is obtained by comprehensive comparisons made between the calculated and experimental diffusion coefficients. The developed mobility database, in conjunction with the CALPHAD-type thermodynamic description, has been successfully used to simulate such typical experimental interdiffusion phenomena as the concentration profiles, the microstructural stability of the Kirkendall plane, and the lattice plane displacement.

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Section: Assessment Of Atomic Mobilitymentioning

confidence: 77%

Computational Study of Atomic Mobility for fcc Phase of Co-Fe and Co-Ni Binaries

Cui

Jiang

Ohnuma

et al. 2007

J Phs Eqil and Diff

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“…In Figure 8, the experimentally determined values [8][9][10][11][12][13][14] of the apparent activation energy for diffusion Q are plotted for the 3d transition metals -derived by plotting ln{D} vs 1/T with the correlation factor f assumed to be unity. It is notable that the variation with atomic number of the experimental values of Q determined in this way is not as strong for the 3d row as for the 4d and 5d rows, see Figure 2 -and that the values are consistently smaller than for the 4d and 5d solutes.…”

Section: Results: 3d Rowmentioning

confidence: 99%

“…Here, this situation is remedied. To facilitate a critical evaluation of the modelling, various data have been collected and collated: for the interdiffusion of Ti [8], V [9], Cr [10], Mn [11], Fe [12], Co [10] and Cu [13] with the nickel host. Data for the self-diffusion of nickel are available in [14].…”

Section: Introductionmentioning

confidence: 99%

On the Diffusion of Alloying Elements in the Nickel-Base Superalloys

Fu¹,

Reed²,

Janotti³

et al. 2004

Superalloys 2004 (Tenth International Symposium)

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The diffusion of transition metal solutes in nickel has been studied using quantum-mechanical first principles methods, and the predictions compared critically with the experimental data available in the literature. For the 4d and 5d rows which contain Ru and Re respectively, diffusion rates are largest for elements at the far west and far east of the d-block of transition metals. The calculations reveal that this is due to a significant barrier energy for solute-vacancy exchange for elements residing at the centre of the period, e.g. Ru and Re, despite their displaying atomic sizes which are closest to that of Ni. Thus it is demonstrated conclusively that the underlying electronic bonding controls the rate of diffusion. Elements such as Ru and Re are amongst the most dense and least compressible of the transition metals due to their configuration of electrons -when alloyed with Ni this causes directional and incompressible Ni-Ru and Ni-Re bonds to be formed which hinder vacancy migration. These effects dominate over any differences in the vacancy-solute binding energy and any influence of the atomic radius of the solute. In this respect, the results disprove the traditional view that diffusion of substitutional solutes is least rapid when the size misfit with the host is the greatest. The trends for the 3d row are also studied, and it is shown that magnetism has a profound effect. Finally, if the theoretical results are to be rationalised with the experimental data, it is demonstrated that the correlation factor -which accounts for diffusional jumps in the reverse direction -should be included in the model. The results explain why some elements -for example Re -have a strong effect on the high temperature properties of the superalloys, and provide insights for future alloy design efforts.

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“…CrCr , and D Ni FeFe in the current 3 Al-Co-Cr-Fe-Ni alloys are first compared with those in the other lower-order fcc alloys [32][33][34][35][36] with similar elements available in the literature. As presented in Figure 7, for Al, Cr, and Fe, all diagonal interdiffusivities in the present 3 HEAs at 1273, 1323, and 1373 K are lower than those in the lower-order alloys (i.e., Al 6 Ni 94 [32], Al 3.76 Co 14.7 Ni 81.54 [33], Al 7.7 Cr 9.7 Ni 82.6 [34], Fe 40 Ni 60 [35], and Co-Cr-Fe-Ni [10] alloys).…”

Section: Mobility Parameters Referencesmentioning

confidence: 99%

“…[32], Al 3.76 Co 14.7 Ni 81.54 [33], Al 7.7 Cr 9.7 Ni 82.6 [34], Co 40 Ni 60 [35], Fe 40 Ni 60 [35], Co 5 Ni 95 [36], Co-Cr-Fe-Ni [10].…”

Section: Conflicts Of Interestmentioning

confidence: 99%

On Sluggish Diffusion in Fcc Al–Co–Cr–Fe–Ni High-Entropy Alloys: An Experimental and Numerical Study

Chen

Zhong

et al. 2017

Metals

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High-throughput measurement using the numerical inverse method combined with the diffusion multiple technique was employed to determine the composition-dependent interdiffusion coefficients in fcc Al-Co-Cr-Fe-Ni high-entropy alloys at 1273, 1323, and 1373 K. The reliability of the obtained interdiffusion coefficients was confirmed by comparing the model-predicted composition/interdiffusion flux profiles with the experimental data. The tracer diffusivities of the components were then predicted based on the obtained interdiffusion coefficients and the simplified thermodynamic description. The diagonal interdiffusion coefficients in the present high-entropy alloys were comprehensively compared with those in conventional fcc alloys. Therefore, the sluggish diffusion effect does not apply for all the elements in the present fcc Al-Co-Cr-Fe-Ni high-entropy alloys. A similar result was also observed for the evaluated tracer diffusivities.

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Interdiffusion and its size effect in nickel solid solutions of Ni-Co, Ni-Cr and Ni-Ti systems

Cited by 114 publications

References 16 publications

Computational Study of Atomic Mobility for fcc Phase of Co-Fe and Co-Ni Binaries

Computational Study of Atomic Mobility for fcc Phase of Co-Fe and Co-Ni Binaries

On the Diffusion of Alloying Elements in the Nickel-Base Superalloys

On Sluggish Diffusion in Fcc Al–Co–Cr–Fe–Ni High-Entropy Alloys: An Experimental and Numerical Study

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