Simulación numérica de la descomposición espinodal en sistemas de aleación hipotéticos A-B y A-B-C

Ávila-Dávila, Erika O.; Lezama-Alvarez, Susana; Saucedo‐Muñoz, Maribel L.; López-Hirata, Vı́ctor M.; González-Velázquez, Jorge Luis; Labra, Miguel Pérez

doi:10.3989/revmetalm.1168

Cited by 3 publications

(1 citation statement)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For instance, several studies (Avila- Davila et al, 2009;Eidenberger et al, 2010;Du et al, 2016;Kim et al, 2020;Mianroodi et al, 2021) applied the phase-field method to spinodal decomposition either for hypothetic or real binary and ternary alloys. Most spinodal decomposition simulations (Suwa et al, 2002;Avila et al, 2012) usually considered constant mobility or diffusivity for binary alloys. In contrast, nearly equal diffusivities of components seem to be reasonable for multicomponent alloys but not in the case of simulation for minerals (12).…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic and Kinetic Characteristics of Spinodal Decomposition in Ternary Alloys

et al. 2022

View full text Add to dashboard Cite

The phase decomposition of hypothetic A–B–C alloys was analyzed using the phase-field method based on the numerical solution of the Cahn–Hilliard equation. The effect of the interaction parameters on the growth kinetics of phase decomposition was also studied. The results indicated that the driving force was the fastest if all the three interaction parameters were equal, promoting the quickest growth kinetics of the ternary alloy. The phase decomposition occurred spinodally and caused the formation of three phases, A-rich, B-rich, and C-rich. In this case, the spinodal curve formed an isolated island. If one or two interaction parameters are equal to zero, the growth kinetics is slower. This condition originated only the formation of two decomposed phases with the chemical composition of either one element or two elements depending on the interaction parameters. Likewise, the spinodal curve is not completely located within the isothermal section.

show abstract

Section: Introductionmentioning

confidence: 99%

Thermodynamic and Kinetic Characteristics of Spinodal Decomposition in Ternary Alloys

et al. 2022

View full text Add to dashboard Cite

show abstract

Phase separation and coarsening of NiAl (β′) intermetallic in quench-aged Fe–Ni–Al alloys

Ferreira-Palma

Rosas-Barrios

López-Hirata

et al. 2020

J. Iron Steel Res. Int.

View full text Add to dashboard Cite

Application of Phase-Field Method to the Analysis of Phase Decomposition of Alloys

Ávila-Dávila¹,

López-Hirata²,

Saucedo‐Muñoz³

2016

Modeling and Simulation in Engineering Sciences

View full text Add to dashboard Cite

This chapter is focused on the application of the phase-field method to the analysis of phase decomposition during the isothermal aging of alloys. The phase-field method is based on a numerical solution of either the nonlinear Cahn-Hilliard equation or the Cahn-Allen equation. These partial differential equations can be solved using the finite difference method among other numerical methods. The phase-field method has been applied to analyze different types of phase transformations in alloys, such as phase decomposition, precipitation, recrystallization, grain growth, solidification of pure metals and alloys, martensitic transformation, ordering reactions, and so on. One of the main advantages of phase-field method is that this method permits to follow the microstructure evolution in two or three dimensions as the time of phase transformations progresses. Thus, the morphology, size, and size distribution could be determined to follow their corresponding growth kinetics. Additionally, the evolution of chemical composition can also be followed during the phase transformations. Furthermore, both Allen-Cahn and Cahn-Hilliard equations can be solved simultaneously to analyze the presence of ordered phases or magnetic domains in alloys. The formation of phases in alloys usually takes place by nucleation mechanism, growth mechanism, or spinodal decomposition mechanism, which is followed by the coarsening of phases in alloy systems. These three processes can be been analyzed using the phase-field method and their results can also be compared with the fundamental theories of phase transformations such as the Cahn-Hilliard spinodal decomposition theory and the Lifshitz-Slyozov-Wagner diffusion-controlled coarsening theory. Therefore, this chapter first deals with the analysis of phase decomposition during the isothermal aging of hypothetical binary alloys using the nonlinear Cahn-Hilliard equation. To continue, the effect of main parameters, such as the atomic mobility interface energy and alloy composition, on the microstructure evolution and growth kinetics are discussed. To conclude, the application of phase-field method is extended

show abstract

Simulación numérica de la descomposición espinodal en sistemas de aleación hipotéticos A-B y A-B-C

Cited by 3 publications

References 10 publications

Thermodynamic and Kinetic Characteristics of Spinodal Decomposition in Ternary Alloys

Thermodynamic and Kinetic Characteristics of Spinodal Decomposition in Ternary Alloys

Phase separation and coarsening of NiAl (β′) intermetallic in quench-aged Fe–Ni–Al alloys

Application of Phase-Field Method to the Analysis of Phase Decomposition of Alloys

Contact Info

Product

Resources

About