The Al–Zn–Mg–Cu alloy was subjected to 4 passes equal channel angular pressing (ECAP) at 400°C, followed by different solutions and ageing treatments. The size, type and distribution of precipitates in aluminium matrix are different in different ageing treatments. In single-stage ageing, a large number of η′ precipitates and Guinier-Preston-II (GP-II) zones are generated in the aluminium matrix. The precipitates are mainly MgZn2 (η) precipitates and η′ precipitates during the double-stage ageing. The size and type of precipitates in three-stage ageing are similar to those in two-stage ageing. Simultaneously, the single-stage ageing sample has poor corrosion resistance and good hardness. Two-stage ageing and three-stage ageing samples have better corrosion resistance, but their hardness is lower than that of single-stage ageing.
WarrenA.S.Developments and challanges for aluminium – a Boeing perspective. Mater Forum. 2004;28:24–31.
2.
AzarniyaATaheriAKTaheriKK.Recent advances in aging of 7xxx series aluminum alloys: a physical metallurgy perspective. J.Alloys Compd. 2019;781:945–983.
3.
VogelesangLBVlotA.Development of fibre metal laminates for advanced aerospace structures. J Mater Process Technol. 2000;103:1–5.
4.
VermeerenCAJR.An historic overview of the development of fibre metal laminates. Appl Compos Mater. 2003;10:189–205.
5.
DengYYinZZhaoKEffects of Sc and Zr microalloying additions on the microstructure and mechanical properties of new Al-Zn-Mg alloys. J Alloys Compd. 2012;530:71–78.
6.
YangWJiSZhangQInvestigation of mechanical and corrosion properties of an extreme-cooled 7055 aluminum alloy under various aging conditions and interface analysis of η′ precipitate. Mater Des. 2015;85:752–761.
7.
ChenZYanKRenCPrecipitation sequence and hardening effect in 7A85 aluminum alloy. J Alloys Compd. 2021;875(2):159950.
8.
SekharAPDasD.Influence of artificial aging on mechanical properties and high stress abrasive wear behaviour of Al-Mg-Si alloy. Met Mater Int. 2021;27(2):337–351.
9.
WlochGSokolowskiKOstachowskiPDecomposition of supersaturated solid solution during non-isothermal aging and its effect on the physical properties and microstructure of theAg-Cu7.5 alloy. J Mater Eng Perform. 2020;29(3):1488–1494.
10.
ChengXFurukawaMHoritaZUsing ECAP to achieve grain refinement, precipitate fragmentation and high strain rate superplasticity in a spray-cast aluminum alloy. Acta Mater. 2003;51(20):6139–6149.
11.
ChowdhurySGChengXLangdonTG.Texture evolution in an aluminum alloy processed by ECAP with concurrent precipitate fragmentation. Mater Sci Eng A. 2008;473:219–225.
12.
GoloborodkoASitdikovOKaibyshevREffect of pressing temperature on fine-grained structure formation in 7475 aluminum alloy during ECAP. Mater Sci Eng A. 2004;381:121–128.
13.
ChengXSchroederSBerbonPBPrinciples of ECAP-conform as a continuous process for achieving grain refinement: application to an aluminum alloy. Acta Mater. 2010;58(4):1379–1386.
14.
MoguchevaABabichEOvsyannikovBMicrostructural evolution in a 5024 aluminum alloy processed by ECAP with and without back pressure. Mater Sci Eng A. 2013;560:178–192.
15.
HeLZCaoYHLiuXTInfluences of magnetic annealing on the grain growth in a cryoECAPed 1050 aluminum alloy. Mater Charact. 2013;84(10):188–195.
16.
DamavandiENourouziSRabieeSMTextural evaluation of Al-Si-Cu alloy processed by route BC-ECAP. Met Mater Int. 2021; 27: 2756–2772.
17.
ZhouYCaoJHuangXEffects of aging temperature on the microstructure and mechanical properties of a Ti2AlNb based alloy. Mater Sci Forum. 2016;849:368–375.
18.
TańskiTSnopińskiPPrusikKThe effects of room temperature ECAP and subsequent aging on the structure and properties of the Al-3%Mg aluminium alloy. Mater Charact. 2017;133:185–195.
19.
GoodarzyMHArabiHBoutorabiMAThe effects of room temperature ECAP and subsequent aging on mechanical properties of 2024 Al alloy. J Alloys Compd. 2014;585:753–759.
20.
DuanYTangLXuGMicrostructure and mechanical properties of 7005 aluminum alloy processed by room temperature ECAP and subsequent annealing. J Alloys Compd. 2016;664:518–529.
21.
HouYChenLLiZEffects of artificial aging on microstructure, mechanical properties and stress corrosion cracking of a novel high strength 7A99 Al alloy. Mater Sci Eng A. 2020;780:139217.1–139217.14.
22.
ChenLHouYLiZEnhancing mechanical properties and corrosion resistance of a high strength 7A99 Al alloy by introducing pre-rolling in solution and aging treatments. J Alloys Compd. 2022;898:162972.
23.
LiZChenLTangJImproving mechanical anisotropy and corrosion resistance of extruded AA7075 alloy by warm cross rolling and annealing.J Alloys Compd. 2021;863:158725.
24.
LiZChenLTangJResponse of mechanical properties and corrosion behavior of Al-Zn-Mg alloy treated by aging and annealing: a comparative study. J Alloys Compd. 2020;848:156561.
25.
ZhangZMaXZhangCEffect of stress-aging treatment on the mechanical and corrosion properties of Al-Zn-Mg-Cu alloy. Mater Sci Eng A. 2022;838:142791.
26.
ZhaoHZhangGZhangQJoining mechanism and mechanical properties of metallic bump assisted weld-bonded (MBaWB) joints of AA6061-T6 and bare DP590. J Manuf Process. 2020;50:204–215.
27.
ChenHZhangCJiaDCorrosion behaviors of selective laser melted aluminum alloys: a review. Metals. 2020;10(1):102.
28.
Cabrera-CorreaLGonzalez-RoviraLde Dios Lopez-CastroJPitting and intergranular corrosion of Scalmalloy® aluminium alloy additively manufactured by selective laser melting (SLM). Corros Sci. 2020;201:110273.
29.
LiGFangMXuGEffect of high temperature ECAP on grain coarsening and refinement. Mater Sci Technol. 2022;38:181–190.
30.
GhoshAGhoshMKalsarR.Influence of homogenisation time on evolution of eutectic precipitates,dispersoid behaviour and crystallographic texture for Al-Zn-Mg-Cu-Ag alloy. J Alloys Compd. 2019;802:276–289.
31.
KhalfallahARahoAAAmzertSPrecipitation kinetics of GP zones, metastable η′ precipitates and equilibrium η precipitates in Al-5.46wt.% Zn-1.67wt.% Mg alloy. Trans Nonferrous Metals Soc China. 2019;29:233–241.
32.
DengYXuGYinZEffects of Sc and Zr microalloying additions on the recrystallization texture and mechanism of Al–Zn–Mg alloys. J Alloys Compd. 2013;580:412–426.
33.
EnglerOKongXWYangP.Influence of particle stimulated nucleation on the recrystallization textures in cold deformed Al-alloys part I – experimental observations. Scripta Mater. 1997;37(11):1665–1674.
34.
RodgersBIPrangnellPB.Quantifification of the influence of increased prestretching on microstructure-strength relationships in the Al-Cu-Li alloy AA2195. Acta Mater. 2016;108:55–67.
35.
LinYCXiaYCJiangYQPrecipitation hardening of 2024-T3 aluminum alloy during creep aging. Mater Sci Eng A. 2013;565:420–429.
36.
LinYCPengXBJiangYQEffects of creep-aging parameters on aging precipitates of a two-stage creep-aged Al-Zn-Mg-Cu alloy under the extra compressive stress. J Alloy Compd. 2018;743:448–455.
37.
ChungTFYangYLShiojiriM.An atomic scale structural investigation of nanosized η precipitates in the 7050 aluminum alloy. Acta Mater. 2019;174:351–368.
38.
ShaGCerezoA.Early-stage precipitation in Al–Zn–Mg–Cu alloy (7050). Acta Mater. 2004;52:4503–4516.
39.
RoutPKGhoshMMGhoshKS.Effect of solution pH on electrochemical and stress corrosion cracking behaviour of a 7150 extreme-cooled 7055 aluminum alloy. Mater Sci Eng A. 2014;604:156–165.
40.
SchnattererCZanderD.Influence of heat treatments on the stress corrosion cracking susceptibility of 7075 aluminum wires in NaCl solutions. Mater Corros. 2016;67:1164–1172.
41.
PengGChenKChenSInfluence of repetitious-RRA treatment on the strength and SCC resistance of Al-Zn-Mg-Cu alloy. Mater Sci Eng A. 2011;528(12):4014–4018.
42.
ZhaoXChenXWangX.Effect of aging processes on corrosion behavior and stress corrosion sensitivity of pre-stretched 7075 aluminum alloy. Mater Corros. 2018;69:850–857.
43.
LhbDLhaBSccDEffects of non-isothermal aging on microstructure, mechanical properties and corrosion resistance of 2A14 aluminum alloy. J Alloy Compd. 2020;842:155542.
44.
GashtiSOFattah-AlhosseiniAMazaheriYMicrostructure, mechanical properties and electrochemical behavior of AA1050 processed by accumulative roll bonding (ARB). J Alloy Compd. 2016;688:44–55.
45.
Dalla TorreFHGazderAAPerelomaEVRecent progress on the study of the microstructure and mechanical properties of ECAE copper. J Mater Sci. 2007;42:9097–9111.
46.
ZhaoYHToppingTLiYStrength and ductility of bi-modal Cu. Adv Eng Mater. 2011;13:865–871.
47.
LiHHuangDKangWEffect of different aging processes on the microstructure and mechanical properties of a novel Al-Cu-Li alloy. J Mater Sci Technol. 2016;32(10):1049–1053.
48.
YangWJiSQianZInvestigation of mechanical and corrosion properties of an Al–Zn–Mg–Cu alloy under various ageing conditions and interface analysis of η′ precipitate. Mater Design. 2015;85(Nov.15):752–761.
49.
SchnattererCBulingerAZanderD.Evaluating the intergranular corrosion susceptibility of Al-Mg-Si-Cu alloys using electrochemical methods. Mater Corros. 2016;67:1308–1313.
50.
ZanderDSchnattererC.The influence of manufacturing processes on the microstructure and corrosion of the AZ91D magnesium alloy evaluated using a computational image analysis. Corros Sci. 2015;98:291–303.
51.
LiXDWangXSRenHHEffect of prior corrosion state on the fatigue small cracking behaviour of 6151-T6 aluminum alloy. Corros Sci. 2012;55:26–33.
52.
El-MenshawyKEl-SayedAEffect of aging time at low aging temperatures on the corrosion of aluminum alloy 6061. Corros Sci. 2012;54:167–173.
53.
BoLIPanQLChenCPEffect of aging time on precipitation behavior mechanical and corrosion properties of a novel Al-Zn-Mg-Sc-Zr alloy. Trans Nonferrous Metals Soc China. 2016;26:2263–2275.
54.
YongqianXLihuaZ.Effect of creep aging process on microstructures and properties of the retrogressedAl-Zn-Mg-Cu alloy. Metals. 2016;6:1–13.
