A layer model for the kinetics of segregation in planar defects in multi-component materials
Source abstract
Abstract
Suzuki segregation and local phase transformations are widely observed across materials with extended planar defects, offering opportunities to design novel high-temperature and functional materials enabled by the nanoscale two-dimensional defects. However, the kinetics of the segregation process are not well understood despite intensive efforts have been made to investigate the segregation profiles at equilibrium and non-equilibrium conditions. In this work, a new model is proposed to study the temperature- and time-dependent segregation process to facilitate the research of this phenomenon. The model is established from the segregation energy landscape across the planar defects and the interlayer diffusion process. The model is applied to the Co-Ni binary alloys, Co-based superalloys, and Ni-based superalloys to understand the characteristics of segregation at equilibrium, the timescale required to reach equilibrium, and the influence of solute–solute interactions in the process. The kinetic model can be implemented with the thermodynamic models of segregation energy, which is demonstrated for a Ni-Co-Cr system. Based on the findings, a time–temperature–segregation diagram is proposed to determine the heat treatment parameters or thermal exposure profiles to achieve Suzuki segregation and local phase transformation for material design.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: High-Temperature Coating Behaviors · Aluminum Alloys Composites Properties · Additive Manufacturing Materials and Processes
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (48)
Show source-provided references
1. Chemical interaction of solute atoms with dislocations
2. Segregation of solute atoms to stacking faults10.1143/JPSJ.17.322 ↗
3. On the Suzuki effect and spinodal decomposition10.1016/0001-6160(66)90195-7 ↗
4. Solute segregation and deviation from bulk thermodynamics at nanoscale crystalline defects10.1126/sciadv.1601796 ↗
5. Quantitative prediction of Suzuki segregation at stacking faults of the γ′phase in Ni-base superalloys10.1016/j.actamat.2020.08.056 ↗
6. First-principles study of Suzuki segregation at stacking faults in disordered face-centered cubic Co-Ni alloys10.1016/j.actamat.2021.117358 ↗
7. Stacking fault slows down ionic transport kinetics in lithium-rich layered oxides10.1021/acsenergylett.3c02502 ↗
8. Local conduction in Mo x W1–x Se2: The role of stacking faults, defects, and alloying10.1021/acsami.8b01506 ↗
9. Segregation and phase transformations along superlattice intrinsic stacking faults in Ni-based superalloys10.1007/s11661-018-4701-5 ↗
10. The influence of mo on suzuki-segregation-related microstructure evolution and mechanical properties of Co-Ni-based superalloy10.1016/j.jallcom.2018.07.154 ↗
11. Precipitate shearing, fault energies, and solute segregation to planar faults in Ni-, CoNi-, and Co-base superalloys10.1146/annurev-matsci-102419-011433 ↗
12. Segregation at stacking faults within the γ’ phase of two Ni-base superalloys following intermediate temperature creep10.1016/j.scriptamat.2014.06.032 ↗
13. Planar defect formation in the γ’ phase during high temperature creep in single crystal CoNi-base superalloys10.1016/j.actamat.2016.03.077 ↗
14. High resolution energy dispersive spectroscopy mapping of planar defects in L12-containing Co-base superalloys10.1016/j.actamat.2015.01.050 ↗
15. Atomic structure and elemental segregation behavior of creep defects in a Co-Al-W-based single crystal superalloys under high temperature and low stress10.1016/j.actamat.2020.03.015 ↗
16. Temperature and time dependence of elemental segregation at stacking faults in Ni-and Co-base superalloys
17. Local phase transformation strengthening at Microtwin boundaries in nickel-based superalloys10.1016/j.actamat.2022.118206 ↗
18. Localized phase transformation strengthening in CoNi-based superalloys10.1016/j.scriptamat.2024.116312 ↗
19. On the universality of Suzuki segregation in binary Mg alloys from first principles10.1016/j.jallcom.2014.09.115 ↗
20. Direct observation of dislocation dissociation and Suzuki segregation in a Mg–Zn–Y alloy by aberration-corrected scanning transmission electron microscopy10.1016/j.actamat.2012.09.067 ↗
21. The hidden structure dependence of the chemical life of dislocations10.1126/sciadv.abf0563 ↗
22. Suzuki segregation in a binary Cu-Si alloy
23. Interaction of dopant atoms with stacking faults in silicon crystals10.1063/1.3490753 ↗
24. Segregation of dopant atoms on extended defects in semiconductors10.1016/S0921-4526(01)00462-8 ↗
25. Quantification of suzuki segregation - driving thermodynamics, diffusion-based kinetics, and strengthening mechanisms
26. Suzuki segregation in Co-Ni-based superalloy at 973 K: An experimental and computational study by phase-field simulation10.1016/j.actamat.2012.01.054 ↗
27. A phase-field model of concurrent Suzuki segregation and partial dislocation glide10.1016/j.commatsci.2024.113021 ↗
28. On the composition of microtwins in a single crystal nickel-based superalloy10.1016/j.scriptamat.2016.08.029 ↗
29. A thermodynamically consistent constitutive model for diffusion-assisted plasticity in Ni-based superalloys10.1016/j.ijplas.2017.12.007 ↗
30. A model of the kinetics and equilibria of surface segregation in the monolayer regime10.1016/0039-6028(78)90143-7 ↗
31. Electronic origin of suzuki segregation of transition metal elements in face-centered cubic Co and Ni alloys10.1016/j.commatsci.2023.112033 ↗
32. Simplified statistical model for competitive segregation kinetics-application to the Fe-6at.% Si alloy surface10.1016/0022-5088(88)90262-7 ↗
33. Superlattice stacking fault formation and twinning during creep in γ/γ′ single crystal superalloy CMSX-410.1016/S0921-5093(02)00172-7 ↗
34. Solute segregation transition and drag force on grain boundaries10.1016/S1359-6454(03)00184-8 ↗
35. Segregation of alloying elements to planar faults in γ’-Ni3Al10.1016/j.actamat.2018.01.055 ↗
36. Exceptional damage-tolerance of a medium-entropy alloy CrCoNi at cryogenic temperatures10.1038/ncomms10602 ↗
37. Stacking fault energy in concentrated alloys10.1038/s41467-021-23860-z ↗
38. Interdiffusion and its size effect in nickel solid solutions of Ni-Co, Ni-Cr and Ni-Ti systems10.1007/BF00729354 ↗
39. Thermo-calc & DICTRA, computational tools for materials science10.1016/S0364-5916(02)00037-8 ↗
40. Segregation and η phase formation along stacking faults during creep at intermediate temperatures in a Ni-based superalloy10.1016/j.actamat.2015.08.053 ↗
41. Titus · 2015
42. Reed · 2008
43. Thermodynamic modeling of Al–Co–Cr, Al–Co–Ni, Co–Cr–Ni ternary systems towards a description for Al–Co–Cr–Ni10.1016/j.calphad.2015.12.007 ↗
44. Thermodynamic re-assessment of the ternary system Al-Cr-Ni10.1016/S0364-5916(01)00049-9 ↗
45. Interdiffusion in the Co-Ni system-I concentration penetration curves and interdiffusion coefficients10.1007/BF01589317 ↗
46. Creep-induced planar defects in L12-containing Co-and CoNi-base single-crystal superalloys10.1016/j.actamat.2014.08.033 ↗
47. On the diffusive phase transformation mechanism assisted by extended dislocations during creep of a single crystal CoNi-based superalloy10.1016/j.actamat.2018.05.074 ↗
48. Bayesian optimization acquisition functions for accelerated search of cluster expansion convex hull of multi-component alloys10.1038/s41524-024-01391-7 ↗