Fatigue crack propagation of aeronautic AA7050-T7451 and AA2050-T84 aluminum alloys in air and saline environments
Source abstract
Abstract
AA7050-T7451 aluminum alloy is one of the most used material in aeronautical applications due to its high strength/density ratio and good fatigue resistance. More recently the AA2050-T84 alloy was introduced due to its reduced density and comparable static mechanical properties. However, fatigue crack propagation properties in corrosive environments are yet to be documented. In this paper fatigue crack propagation was evaluated in saline (3.5 wt% NaCl solution) and air environments. The AA2050-T84 alloy presented a better fatigue performance both in air and aqueous saline environments. Its superior performance was ascribed to non-homogeneous deformation and higher corrosion resistance. These results show the AA2050-T84 alloy as a potential candidate to replace AA7050-T7451 alloy in aeronautical components subjected to fatigue in corrosive environments.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Aluminum Alloy Microstructure Properties · Aluminum Alloys Composites Properties · Advanced Welding Techniques Analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (50)
Show source-provided references
1. Fatigue Crack Propagation in New Generation Aluminium Alloys10.4028/www.scientific.net/KEM.488-489.476 ↗
2. Eswara Prasad · 2013
3. Fatigue crack growth in the 2050–T8 aluminium alloy10.1016/j.ijfatigue.2018.03.020 ↗
4. Corrosion-fatigue lifetime of Aluminium-Copper-Lithium alloy 2050 in chloride solution10.1016/j.matdes.2015.08.003 ↗
5. Strengthening mechanisms, deformation behavior, and anisotropic mechanical properties of Al-Li alloys: A review10.1016/j.jare.2017.12.004 ↗
6. Corrosion Fatigue Behavior of 7050 Aluminum
7. Environmental cracking performance of new generation thick plate 7000–T7x series alloys in humid air10.1016/j.corsci.2020.108701 ↗
8. Fatigue crack growth behavior of aluminum alloy 2020 (AlCuLiMnCd)10.1016/0025-5416(84)90078-8 ↗
9. Environment-sensitive closure and fatigue crack propagation behavior of Al 209010.1007/s11661-998-0230-y ↗
10. Aluminum-copper-lithium alloy 2050 developed for medium to thick plate10.1007/s11665-009-9554-z ↗
11. Environmentally-assisted Fatigue Crack Growth in AA7050-T73511 Al Alloy and AA2050-T84 Al-Cu-Li Alloy10.1590/1516-1439.018915 ↗
12. Influence of grain structure and crystallographic orientation on fatigue crack propagation behavior of 7050 alloy thick plate10.1016/j.ijfatigue.2014.03.009 ↗
13. Identification of the metallurgical parameters explaining the corrosion susceptibility in a 2050 aluminium alloy10.1016/j.corsci.2015.10.020 ↗
14. Pao PS, Feng CR, Gill SJ. Corrosion Fatigue Crack Initiation in Aluminum Alloys 7075 and 7050. 2000;no. October:1022–31.10.5006/1.3294379 ↗
15. ASTM E8 / E8M-16ae1, Standard Test Methods for Tension Testing of Metallic Materials. West Conshohocken, PA: ASTM International; 2016.
16. ASTM E647-15e1, Standard Test Method for Measurement of Fatigue Crack Growth Rates. West Conshohocken, PA: ASTM International; 2015.
17. Carla Isabel dos Santos M, Filho Waldek Wladimir B, Cassius Olívio Figueiredo Terra R. Corrosion Fatigue of Aluminum-Copper-Lithium Alloy 2050-T84 Submitted at Salt Spray and Aqueous Saline Solution. In: Jaramillo HE, Avila JA, Chen C (Eds.). Strength of Materials. IntechOpen; 2020. p. 119–36.10.5772/intechopen.88179 ↗
18. Dowling · 2013
19. Factors controlling crack velocity in 7000 series aluminium alloys during fatigue in an aggressive environment10.1016/0010-938X(83)90117-8 ↗
20. Environmentally-assisted fatigue crack growth mechanisms in advanced materials for aerospace applications10.1016/j.ijfatigue.2007.03.014 ↗
21. Effect of retrogression and reaging treatment on the microstructure and fatigue crack growth behavior of 7050 aluminum alloy thick plate10.1016/j.matdes.2013.09.063 ↗
22. Friction-stir welding effects on microstructure and fatigue of aluminum alloy 7050–T745110.1007/s11661-000-0136-9 ↗
23. The Effect of ITMT’s and P/M Processing on the Microstructure and Mechanical Properties of the X7091 Alloy10.1007/BF02644221 ↗
24. Fatigue crack propagation mechanisms in an aluminium lithium alloy10.1016/0956-7151(94)00301-W ↗
25. Fatigue crack propagation in 7050–T7451 plate alloy10.1016/j.engfracmech.2009.01.006 ↗
26. Análise microestrutural, tenacidade à fratura e vida em fadiga das AA7050-T7451 e AA2050-T84 (Al-Li)
27. Fracture toughness and fatigue crack growth analysis of 7050–T7451 alloy thick plate with different thicknesses10.1007/s11771-014-2265-0 ↗
28. Evolution of grain boundary precipitates in Al 7075 upon aging and correlation with stress corrosion cracking behavior10.1007/s11661-012-1413-0 ↗
29. Effects of precipitates on fatigue crack growth rate of AA 7055 aluminum alloy10.1016/S1003-6326(10)60630-9 ↗
30. Effect of solution treatment on the strength and fracture toughness of aluminum alloy 705010.1016/j.jallcom.2011.01.005 ↗
31. Electrochemical Polarization10.1149/1.2428496 ↗
32. Active corrosion protection of various aluminium alloys by lithium-leaching coatings10.1002/sia.6638 ↗
33. Corrosion mechanism of Al, Al–Zn and Al–Zn–Sn alloys in 3 wt.% NaCl solution10.1016/j.corsci.2014.07.018 ↗
34. Improvement of Corrosion Protection of Coating System via Inhibitor Response Order10.3390/coatings8100365 ↗
35. Microstructure and fatigue crack growth in a γ-Fe-Ni-Al alloy10.1016/0001-6160(76)90104-8 ↗
36. Aluminium Lithium Alloys
37. The effect of inhomogeneous plastic deformation on the ductility and fracture behavior of age hardenable aluminum alloys10.1016/j.ijplas.2004.03.003 ↗
38. Fatigue and Fracture. ASM International; 1996.
39. Effect of aging treatments on the kinetics of fatigue crack growth in 7010 aluminum alloy10.1016/j.msea.2006.07.063 ↗
40. The high-cycle fatigue and fracture behavior of aluminum alloy 705510.1016/S0921-5093(99)00716-9 ↗
41. Low stress intensity fatigue crack growth in 2024–T3 and T35110.1016/0013-7944(88)90227-5 ↗
42. Corrosion–fatigue crack growth in friction stir welded Al 705010.1016/S1359-6462(01)01070-3 ↗
43. Effects of grain structure related precipitation on corrosion behavior and corrosion fatigue property of Al–Mg–Si alloy
44. Environmental fatigue of an Al-Li-Cu alloy: Part II. Microscopic hydrogen cracking processes10.1007/BF02659499 ↗
45. Stress-Corrosion Cracking of High-Strength Aluminum Alloys
46. Hydrogen-assisted Cracking
47. 1998
48. Environmental fatigue of an Al-Li-Cu alloy: part I. Intrinsic crack propagation kinetics in hydrogenous environments10.1007/BF02665008 ↗
49. Crack tip chemistry and electrochemistry of environmental cracks in AA 705010.1016/j.corsci.2006.12.001 ↗
50. Chemical and electrochemical conditions within stress corrosion and corrosion fatigue cracks10.1038/s41529-017-0015-0 ↗