Hydrogen trapping at T1 (Al2CuLi) precipitates in Al–Cu–Li alloys during aqueous corrosion
Source abstract
Abstract
The uptake and partitioning of hydrogen during aqueous corrosion in Al–Cu–Li alloys were investigated using focused ion beam (FIB), transmission electron microscopy (TEM), and atom probe tomography (APT). Hydrogen-induced nanopores were observed in FIB-prepared TEM foils from corroded samples but not in uncorroded controls. During corrosion, hydrogen preferentially accumulates at T 1 (Al 2 CuLi) precipitates along grain boundaries (GBs) and subsequently forms nanopores under ion irradiation during FIB preparation. With prolonged exposure, nanopores also form at intragranular T 1 precipitates under the same irradiation conditions. APT analysis reveals that T 1 phases exhibit a hydrogen trapping capacity of 3.5 at.%. These precipitates locally deplete solute hydrogen at GBs and impede further hydrogen migration along these boundaries. Our study demonstrates that deliberate design of precipitates as hydrogen traps offers a promising strategy for enhancing the resistance to hydrogen-induced failure in Al–Cu–Li alloys.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Aluminum Alloy Microstructure Properties · Corrosion Behavior and Inhibition · Metallurgy and Material Science
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (55)
Show source-provided references
1. Hydrogen trapping and embrittlement in high-strength Al alloys10.1038/s41586-021-04343-z ↗
2. The evolution of Al-Li base products for aerospace and space applications10.1007/s11661-012-1155-z ↗
3. Effect of precipitate coherency on the corrosion-induced hydrogen trapping in 2024 aluminum alloy10.1016/j.ijhydene.2021.08.005 ↗
4. Stress corrosion cracking and hydrogen embrittlement of an al–zn–mg–cu alloy10.1016/j.actamat.2004.06.023 ↗
5. Assessment of hydrogen embrittlement via image-based techniques in al–zn–mg–cu aluminum alloys10.1016/j.actamat.2019.06.056 ↗
6. Corrosion-induced hydrogen embrittlement in aluminum alloy 202410.1016/j.corsci.2005.05.015 ↗
7. Intergranular corrosion of an al-cu-li alloy: the influence from grain structure10.1016/j.corsci.2022.110845 ↗
8. Macro-galvanic effect and its influence on corrosion behaviors of friction stir welding joint of 7050-T76 Al alloy10.1016/j.corsci.2019.108360 ↗
9. Characterization of hydrogen defects forming during chemical charging in the aluminum10.1016/j.jallcom.2004.06.041 ↗
10. Enhanced rate of hydrogen production by corrosion of commercial aluminum10.1016/j.ijhydene.2020.01.215 ↗
11. Engineering metal-carbide hydrogen traps in steels10.1038/s41467-024-45017-4 ↗
12. Atomic-scale insights on hydrogen trapping and exclusion at incoherent interfaces of nanoprecipitates in martensitic steels10.1038/s41467-022-31665-x ↗
13. Characterizing solute hydrogen and hydrides in pure and alloyed titanium at the atomic scale10.1016/j.actamat.2018.02.064 ↗
14. Hydrogen transport in metals: integration of permeation, thermal desorption and degassing10.1016/j.jmst.2017.09.011 ↗
15. Synergistic effects of Nb and Mo on hydrogen-induced cracking of pipeline steels: a combined experimental and numerical study10.1016/j.jmst.2023.02.022 ↗
16. Observation of hydrogen trapping at dislocations, grain boundaries, and precipitates10.1126/science.aaz0122 ↗
17. Solute–vacancy binding in aluminum10.1016/j.actamat.2007.06.039 ↗
18. Atomistic mechanism of hydrogen trapping in bcc Fe–Y solid solution: a first principles study10.1016/j.actamat.2010.06.011 ↗
19. Defeating hydrogen-induced grain-boundary embrittlement via triggering unusual interfacial segregation in FeCrCoNi-type high-entropy alloys10.1016/j.actamat.2022.118410 ↗
20. Hydrogen-assisted fracture features of a high strength ferrite-pearlite steel10.1016/j.jmst.2018.12.019 ↗
21. Evaluation of hydrogen effect on the fatigue crack growth behavior of medium-Mn steels via in-situ hydrogen plasma charging in an environmental scanning electron microscope10.1016/j.jmst.2020.12.069 ↗
22. Assessment of the impact of hydrogen on the stress developed ahead of a fatigue crack10.1016/j.actamat.2019.05.028 ↗
23. Substitutional solute grain boundary segregation enhances resistance to hydrogen embrittlement in compositionally complex alloys10.1016/j.actamat.2025.120755 ↗
24. Hydrogen induced grain boundary fracture in high purity nickel and its alloys—Enhanced hydrogen diffusion along grain boundaries10.1016/0001-6160(88)90109-5 ↗
25. Grain boundary diffusion of hydrogen in nickel10.1007/BF02656803 ↗
26. SIMS study of hydrogen at the surface and grain boundaries of nickel bicrystals10.1016/0001-6160(87)90150-7 ↗
27. Accelerated diffusion of hydrogen along grain boundaries in nickel10.1016/1359-6454(95)00446-7 ↗
28. Experimental studies of grain boundary diffusion of hydrogen in metals10.1016/0956-7151(91)90333-V ↗
29. Grain boundary transport of hydrogen in nickel10.1016/0036-9748(82)90273-3 ↗
30. The use of silver decoration technique in the study of hydrogen transport in metallic materials10.1007/BF02671932 ↗
31. Solute hydrogen and deuterium observed at the near atomic scale in high-strength steel10.1016/j.actamat.2020.02.004 ↗
32. Structurally complex phase engineering enables hydrogen-tolerant Al alloys10.1038/s41586-025-08879-2 ↗
33. Revisiting stress-corrosion cracking and hydrogen embrittlement in 7xxx-Al alloys at the near-atomic-scale10.1038/s41467-022-31964-3 ↗
34. In situ study of the initiation of hydrogen bubbles at the aluminium metal/oxide interface10.1038/nmat4336 ↗
35. Hydrogen bubbles in embrittled al-zn-mg alloys10.1007/BF00739268 ↗
36. Hydrogen embrittlement and trapping in Al-6%-Zn-3%-Mg10.1016/0001-6160(80)90138-8 ↗
37. Water vapour embrittlement and hydrogen bubble formation in al–zn–mg alloys10.1179/bcj.1977.12.2.80 ↗
38. Quantitative analysis of the influences of pre-treatments on the microstructure evolution and mechanical properties during artificial ageing of an al–cu–li–mg–ag alloy10.1016/j.msea.2020.139253 ↗
39. Measurement and estimation of temperature rise in TEM sample during ion milling10.1016/j.ultramic.2007.01.002 ↗
40. Hydrogen trapping and embrittlement susceptibility in al-cu-li alloys10.1016/j.corsci.2023.111628 ↗
41. The diffusion and trapping of hydrogen in high purity aluminum10.1016/S1359-6454(98)00333-4 ↗
42. The identification of hydrogen trapping states in an al-li-cu-zr alloy using thermal desorption spectroscopy10.1007/s11661-000-0064-8 ↗
43. The evolution of hydrogen bubbles during ion irradiation and annealing in molybdenum for neutral beam injection inductively coupled plasma source10.1016/j.nme.2022.101298 ↗
44. Hydrogen bubble formation and evolution in tungsten under different hydrogen irradiation conditions10.1016/j.fusengdes.2014.10.007 ↗
45. Defect production and accumulation under hydrogen and helium ion irradiation10.1016/S0022-3115(97)00245-6 ↗
46. Trap theory of hydrogen embrittlement10.1016/0001-6160(80)90106-6 ↗
47. Is hydrogen diffusion along grain boundaries fast or slow? Atomistic origin and mechanistic modeling10.1103/PhysRevLett.122.215501 ↗
48. Fatigue resistance of al-cu-li and comparison with 7xxx aerospace alloys
49. Microstructural evolution and interfacial crack corrosion behavior of double-sided laser beam welded 2060/2099 Al-Li alloys T-joints10.1016/j.matdes.2017.09.042 ↗
50. 重要Atom probe tomographic study of elemental segregation at grain boundaries for a peak-aged al–zn–mg alloy10.1016/j.corsci.2013.10.027 ↗
51. In-situ 3D observation of hydrogen-assisted particle damage behavior in 7075 Al alloy by synchrotron X-ray tomography10.1016/j.actamat.2022.117658 ↗
52. On the role of traps in the microstructural control of environmental hydrogen embrittlement of a 7xxx series aluminum alloy10.1016/j.jallcom.2020.157300 ↗
53. Influence of intermetallic particles on the initiation and growth behavior of hydrogen micropores during high-temperature exposure in al-zn-mg-cu aluminum alloys10.1016/j.scriptamat.2017.03.020 ↗
54. Hydrogen production by aluminum corrosion in aqueous hydrochloric acid solution promoted by sodium molybdate dihydrate10.1016/j.ijhydene.2020.01.122 ↗
55. Hydrogen generation dynamics of the reaction between metal aluminum and sodium hydroxide solution under pressurized condition10.1016/j.ijhydene.2025.152795 ↗