Deformation-induced dissolution and growth of precipitates in an Al–Mg–Er alloy during high-cycle fatigue
Source abstract
Abstract
Abstract The dissolution and growth of Al3(Er, Zr) precipitates during tensile fatigue experiments were investigated by quasi-in situ and post-mortem scanning transmission electron microscopy with Z contrast imaging and X-ray energy dispersive spectroscopy. Al3(Er, Zr) particles were observed with both non-core–shell and core–shell structures, which were formed during multiple-stage precipitations, in an Al–Mg–Er alloy. After fatigue deformations, the average size of the non-core–shell structured precipitates increased significantly. By tracing the same precipitate particles before and after a high-cycle fatigue test, quasi-in situ electron microscopy revealed that the increase of average particle size is associated with the substantial dissolution of small non-core–shell structured Al3(Er, Zr) particles, whose diameters are generally less than 15 nm, and a consequent growth of larger non-core–shell Al3(Er, Zr) precipitates. On the contrary, the core–shell structured Al3(Er, Zr) precipitates remain stable during high-cycle fatigue tests. Possible mechanisms for the dissolution and growth of non-core–shell structured Al3(Er, Zr) precipitates are discussed in terms of particle size, interfacial energy and lattice mismatch, in comparison to the stable core–shell structured precipitates.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Aluminum Alloy Microstructure Properties · Aluminum Alloys Composites Properties · Microstructure and mechanical properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (32)
Show source-provided references
1. Microstructure of two-phase Al–1.7 at% Cu alloy deformed by equal-channel angular pressing10.1016/S1359-6454(00)00308-6 ↗
2. The dissolution behavior of θ′ phase in Al–Cu binary alloy during equal channel angular pressing and multi-axial compression10.1016/j.msea.2010.03.046 ↗
3. On strain-induced dissolution of θ′ and θ particles in Al–Cu binary alloy during equal channel angular Pressing10.1016/j.msea.2010.12.060 ↗
4. The deformation-induced dissolution of δ1 precipitates in Al–Li alloys10.1016/S0036-9748(88)80278-3 ↗
5. Effects of Al3Sc particle size and precipitate-free zones on fatigue behavior and dislocation structure of an aged Al–Mg–Sc alloy10.1016/j.ijfatigue.2007.05.010 ↗
6. Precipitation strengthening at ambient and elevated temperatures of heat-treatable Al(Sc) alloys10.1016/S1359-6454(02)00201-X ↗
7. Precipitation evolution in Al–0.1Sc, Al–0.1Zr and Al–0.1Sc–0.1Zr(at.%) alloys during isochronal aging10.1016/j.actamat.2010.05.054 ↗
8. The effect of erbium on the microstructure and mechanical properties of Al–Mg–Mn–Zr alloy10.1016/j.msea.2009.02.045 ↗
9. Segregation in Al3(Sc, Zr) precipitates in Al–Sc–Zr alloys10.1016/j.scriptamat.2004.11.021 ↗
10. Precipitation evolution in Al–Er–Zr alloys during aging at elevated temperature10.1016/j.jallcom.2013.03.237 ↗
11. Coarsening resistance at 400°C of precipitation-strengthened Al–Zr–Sc–Er alloys10.1016/j.actamat.2011.07.057 ↗
12. Effect of welding parameters on microstructure and mechanical properties of friction stir welded Al–Mg–Er alloy10.1016/j.msea.2012.09.041 ↗
13. Hot deformation behavior of an Al–5.7 wt.%Mg alloy with erbium10.1016/j.msea.2009.03.029 ↗
14. In situ electron microscopy investigation of void healing in an Al–Mg–Er alloy at a low temperature10.1016/j.actamat.2014.02.004 ↗
15. Insights into the nature of iron-based Fischer-Tropsch catalysts from quasi in situ TEM-EELS and XRD10.1016/j.jcat.2009.09.021 ↗
16. Quasi in situ analytical TEM to investigate electrochemically induced microstructural changes in alloys: AA2024-T3 as an example10.1016/j.corsci.2012.12.006 ↗
17. Quasi in situ sequential sulfidation of CoMo/Al2O3 studied using high-resolution electron microscopy10.1021/jp0256701 ↗
18. Diffraction contrast from spherically symmetrical coherency strains10.1080/14786436308207338 ↗
19. Loss in coherency and coarsening behavior of Al3Sc precipitates10.1016/j.actamat.2003.09.042 ↗
20. Erbium and ytterbium solubilities and diffusivities in aluminum as determined by nanoscale characterization of precipitates10.1016/j.actamat.2009.05.007 ↗
21. Diffusion of zirconium in aluminum10.2464/jilm.23.17 ↗
22. Ostwald ripening of two phase mixtures10.1146/annurev.ms.22.080192.001213 ↗
23. Cementite dissolution in heavily cold drawn pearlitic steel wires10.1016/S1359-6454(96)00216-9 ↗
24. Mechanical properties of Al(Sc, Zr) alloys at ambient and elevated temperatures10.1016/S1359-6454(03)00320-3 ↗
25. Tracking the path of dislocations across ordered Al3Zr nano-precipitates in three dimensions10.1016/j.scriptamat.2013.09.014 ↗
26. The dissolution of small precipitates10.1016/0036-9748(74)90071-4 ↗
27. Fatigue in precipitation hardened materials: a three-dimensional discrete dislocation dynamics modelling of the early cycles10.1080/14786430701393159 ↗
28. Observation of giant diffusivity along dislocation cores10.1126/science.1151771 ↗
29. Highly monodisperse core-shell particles created by solid-state reactions10.1038/nmat3077 ↗
30. Thermographic methodology for rapid determination of the fatigue limit of materials and mechanical components10.1016/S0142-1123(99)00088-2 ↗
31. A New iteration method for the thermographic determination of fatigue limit in steels10.1016/j.ijfatigue.2003.12.009 ↗
32. Quantitative thermographic methodology for fatigue assessment and stress measurement10.1016/j.ijfatigue.2010.07.004 ↗