On variant distribution and coarsening behavior of the α phase in a metastable β titanium alloy
Source abstract
Abstract
Abstract The stereology, variant distribution and coarsening behavior of semicoherent α(hcp) precipitates in a β(bcc) matrix of a Ti5553 alloy has been analyzed, and a dominant 3-variant cluster has been observed in which the variants are related to each other by an axis-angle pair 2 ¯ 0 >/ 60°. Shape and spatial distribution independent elastic self and interaction energies for all pairwise and triplet combinations of α have been calculated and it is found that the 3-cluster combination that is experimentally observed most frequently has the lowest energy for the semicoherent state. The coarsening behavior of the delta distribution follows LSW kinetics after an initial transient, and has been modeled by phase field methods.
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Research context
OpenAlex topics: Titanium Alloys Microstructure and Properties · Intermetallics and Advanced Alloy Properties · Aluminum Alloy Microstructure Properties
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References (24)
Show source-provided references
1. Non-classical homogeneous precipitation mediated by compositional fluctuations in titanium alloys10.1016/j.actamat.2012.07.033 ↗
2. Pseudospinodal mechanism for fine α/β microstructures in β-Ti alloys10.1016/j.actamat.2013.10.026 ↗
3. Reasons for formation of triangular precipitates in Ti–15V–3Cr–3Sn–3Al titanium alloy10.2320/matertrans.47.341 ↗
4. Influence of fine-scale alpha precipitation on the mechanical properties of the beta titanium alloy beta-21S10.1007/s11661-015-2944-y ↗
5. Effect of self-accommodation on α/α boundary populations in pure titanium10.1016/S1359-6454(03)00035-1 ↗
6. Anisotropy in the room-temperature deformation of α – β colonies in titanium alloys: role of the α – β interface10.1080/1478643032000158305 ↗
7. Perspectives on titanium science and technology10.1016/j.actamat.2012.10.043 ↗
8. Kashiwar A. Masters Thesis. Indian Institute of Science, 2014.
9. Predicting equilibrium shape of precipitates as function of coherency state10.1016/j.actamat.2012.04.019 ↗
10. Variant selection during α precipitation in Ti–6Al–4V under the influence of local stress – a simulation study10.1016/j.actamat.2013.06.042 ↗
11. Khachaturyan · 1983
12. Effect of elastic interaction on nucleation: II. Implementation of strain energy of nucleus formation in the phase field method10.1016/j.actamat.2006.10.011 ↗
13. Self accomodation morphology of martensite variants in Zr-2. 5wt % Nb alloy10.1016/0956-7151(93)90224-G ↗
14. Particle size-shape distributions: the general spheroid problem. I. Mathematical model10.1111/j.1365-2818.1976.tb02446.x ↗
15. Particle size-shape distributions: the general spheroid problem 11. Stochastic model and practical guide10.1111/j.1365-2818.1978.tb01162.x ↗
16. The determination of the size distribution of ellipsoidal particles from measurements made on random plane sections
17. The coarsening behaviour of theta and theta’ precipiates in two Al-Cu alloys10.1016/0001-6160(71)90076-9 ↗
18. Kinetic equations for concurrent size and shape coarsening by the ledge mechanism10.1007/BF02660670 ↗
19. On the origin of the high coarsening resistance of Ω plates in Al–Cu–Mg–Ag alloys10.1016/S1359-6454(01)00155-0 ↗
20. The coarsening of γ’ precipitates at large volume fractions10.1016/0001-6160(74)90155-2 ↗
21. Ostwald ripening of two-phase mixtures10.1146/annurev.ms.22.080192.001213 ↗
22. Grand-potential formulation for multicomponent phase transformations combined with thin-interface asymptotics of the double-obstacle potential10.1103/PhysRevE.85.021602 ↗
23. Variant selection by dislocations during α precipitation in α/β titanium alloys10.1016/j.actamat.2014.12.044 ↗
24. Pattern formation during cubic to orthorhombic martensitic transformations in shape memory alloys10.1016/j.actamat.2014.01.012 ↗