Mechanisms of grain boundary α precipitation in the metastable β-titanium Ti-5Al-5Mo-5V-3Cr
Source abstract
Abstract
In this study, we investigated the early nucleation and growth of grain boundary α during the aging heat treatment of Ti-5553. Through a correlative approach using scanning electron microscopy, electron backscatter diffraction, transmission Kikuchi diffraction, transmission electron microscopy, and atom probe tomography, high-angle β-grain boundaries were investigated in detail to understand the evolution of the precipitation of grain boundary α through nucleation and subsequent growth. It is found that at grain boundaries there is a pronounced nucleation of α precipitates with similar orientations. Growth of these similarly orientated α precipitates, in the later stages, leads to their agglomeration and the formation of grain boundary α. This investigation provides insights into the formation of grain boundary α in its early stages of nucleation and growth.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Titanium Alloys Microstructure and Properties · Advanced Materials Characterization Techniques · Metal and Thin Film Mechanics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (43)
Show source-provided references
1. Phase nucleation through confined spinodal fluctuations at crystal defects evidenced in Fe-Mn alloys10.1038/s41467-018-03591-4 ↗
2. Thermodynamics of grain boundary segregation, interfacial spinodal and their relevance for nucleation during solid-solid phase transitions10.1016/j.actamat.2019.02.005 ↗
3. Confined chemical and structural states at dislocations in Fe-9wt%Mn steels: a correlative TEM-atom probe study combined with multiscale modelling10.1016/j.actamat.2016.11.013 ↗
4. The role of β pockets resulting from Fe impurities in hydride formation in titanium10.1016/j.scriptamat.2022.114640 ↗
5. Lejcek · 2010
6. Applied thermodynamics: grain boundary segregation10.3390/e16031462 ↗
7. Segregation-induced changes in grain boundary cohesion and embrittlement in binary alloys10.1016/j.actamat.2015.05.004 ↗
8. Grain boundary segregation engineering in metallic alloys: a pathway to the design of interfaces10.1016/j.cossms.2014.06.002 ↗
9. Grain boundary complexions10.1016/j.actamat.2013.07.037 ↗
10. Atomic-scale quantification of grain boundary segregation in nanocrystalline material10.1103/PhysRevLett.112.126103 ↗
11. Formation of grain boundary α in β Ti alloys: its role in deformation and fracture behavior of these alloys10.1007/s11661-010-0322-3 ↗
12. The influence of soft, precipitate-free zones at grain boundaries in Ti and Al alloys on their fatigue and fracture behavior10.1016/j.msea.2006.07.168 ↗
13. Comparison of the fatigue and fracture of α+β and β titanium alloys10.1007/s11661-001-1031-8 ↗
14. ω-Assisted α nucleation in a metastable β titanium alloy10.1016/j.scriptamat.2019.06.020 ↗
15. Nucleation and growth of α phase in a metastable β-Titanium Ti-5Al-5Mo-5V-3Cr alloy: influence from the nano-scale, ordered-orthorhombic O″ phase and α compositional evolution10.1016/j.scriptamat.2020.113672 ↗
16. Shuffle-induced modulated structure and heating-induced ordering in the metastable β-titanium alloy, Ti-5Al-5Mo-5V-3Cr10.1016/j.scriptamat.2019.09.027 ↗
17. The role of the ω phase on the non-classical precipitation of the α phase in metastable β-titanium alloys10.1016/j.scriptamat.2015.08.019 ↗
18. The indirect influence of the ω phase on the degree of refinement of distributions of the α phase in metastable β-Titanium alloys10.1016/j.actamat.2015.09.053 ↗
19. Lütjering · 2007
20. Grain boundary segregation and its implications regarding the formation of the grain boundary α phase in the metastable β-Titanium Ti–5Al–5Mo–5V–3Cr alloy10.1016/j.scriptamat.2021.114320 ↗
21. Variant selection of grain boundary α by special prior β grain boundaries in titanium alloys10.1016/j.actamat.2014.05.003 ↗
22. 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 ↗
23. Atom probe tomography10.1038/s43586-021-00047-w ↗
24. Correlative microscopy–novel methods and their applications to explore 3D chemistry and structure of nanoscale lattice defects: a case study in superalloys10.1007/s11837-018-2802-7 ↗
25. A cracking oxygen story: a new view of stress corrosion cracking in titanium alloys10.1016/j.actamat.2022.117687 ↗
26. The effect of chromium and cobalt segregation at dislocations on nickel-based superalloys10.1016/j.scriptamat.2017.10.005 ↗
27. Atomistic phase field chemomechanical modeling of dislocation-solute-precipitate interaction in Ni–Al–Co10.1016/j.actamat.2019.06.008 ↗
28. Boron trapping at dislocations in an additively manufactured polycrystalline superalloy10.1016/j.mtla.2023.101801 ↗
29. Role of ω phase in the formation of extremely refined intragranular α precipitates in metastable β-titanium alloys10.1016/j.actamat.2015.11.020 ↗
30. Competition between prismatic and basal slip in hexagonal titanium–aluminum alloys with short-range order10.1080/21663831.2023.2169082 ↗
31. Segregation-induced nanofaceting transition at an asymmetric tilt grain boundary in copper10.1103/PhysRevLett.121.255502 ↗
32. Faceting diagram for Ag segregation induced nanofaceting at an asymmetric Cu tilt grain boundary10.1016/j.actamat.2021.116960 ↗
33. Microstructure, grain boundary evolution and anisotropic Fe segregation in (0001) textured Ti thin films10.1016/j.actamat.2022.118180 ↗
34. Origin of morphological variation of grain boundary precipitates in titanium alloys10.1016/j.scriptamat.2022.114651 ↗
35. Gibbs-Thomson effects in phase transformations10.1016/j.scriptamat.2004.12.026 ↗
36. Grain boundary phase transformations in PtAu and relevance to thermal stabilization of bulk nanocrystalline metals10.1007/s10853-017-1706-1 ↗
37. The hidden structure dependence of the chemical life of dislocations10.1126/sciadv.abf0563 ↗
38. Spinodal decomposition in nanocrystalline alloys10.1016/j.actamat.2021.117054 ↗
39. An automated computational approach for complete in-plane compositional interface analysis by atom probe tomography10.1017/S1431927618016112 ↗
40. The theory of grain boundary segregation in terms of surface adsorption analogues10.1007/BF02642850 ↗
41. Grain boundary segregation, two dimensional compound formation, and precipitation10.1007/BF02642852 ↗
42. D. McLean, Grain boundaries in metals, 1957.
43. Okamoto · 2016