Fatigue behaviour of multi-spot joints of 2024-T3 aluminium sheets obtained by refill Friction Stir Spot Welding with polysulfide sealant

被引：9

作者：

Bernardi, Matteo ^{[1
]}

Suhuddin, Uceu F. H. ^{[1
]}

Fu, Banglong ^{[1
]}

Gerber, Juliano P. ^{[1
]}

Bianchi, Mateus ^{[1
]}

Ostrovsky, Ilya ^{[2
]}

Sievers, Bjoern ^{[2
]}

Faes, Koen ^{[3
]}

Maawad, Emad ^{[4
]}

Lazzeri, Luigi ^{[5
]}

dos Santos, Jorge F. ^{[1
]}

Klusemann, Benjamin ^{[1
,6
]}

机构：

[1] Helmholtz Zentrum Hereon, Inst Mat Mech, Solid State Mat Proc, Max Planck Str 1, D-21502 Geesthacht, Germany

[2] Chemetall GmbH, Trakehner Str 3, D-60487 Frankfurt, Germany

[3] Belgian Welding Inst, Technol Pk 48, B-9052 Zwijnaarde, Belgium

[4] Helmholtz Zentrum Hereon, Inst Mat Phys, Xray Diffract Synchrotron Radiat, Max Planck Str 1, D-21502 Geesthacht, Germany

[5] Univ Pisa, Dept Civil & Ind Engn, Via G Caruso 8, I-56122 Pisa, Italy

[6] Leuphana Univ Luneburg, Inst Prod Technol & Syst, Univ Allee 1, D-21335 Luneburg, Germany

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 2023年 / 172卷

基金：

欧盟地平线“2020”;

关键词：

Refill friction stir spot welding; Aluminum alloy; Sealant; Fatigue; Multiple site damage; STATISTICAL-ANALYSIS; DAMAGE; ALLOYS; STRESSES;

D O I：

10.1016/j.ijfatigue.2023.107539

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The aeronautical industry is looking with interest at friction-based welding for many years due to weight-saving capacities, where fusion-based welding problems can be avoided, allowing also the joining of materials considered complicated to weld with other technologies. Refill Friction Stir Spot Welding (refill FSSW) is a solidstate joining process that shows great potential to be a substitute for single-point joining processes like riveting. The main objective of this study is to investigate the mechanical behaviour of multi-spot joints of AA 2024-T3 obtained by refill FSSW with the addition of a sealant commonly used in riveted joints by the aviation industry. A fatigue test campaign was carried out on the joints with and without sealant to evaluate the possible synergy between the refill FSSW and sealant. The fatigue data obtained are statistically analyzed and compared. According to the comprehensive study including macro- and micro-structure, deformation strain field, residual stress distribution as well as the fatigue crack growth behaviour, the underlying history of multi-spot joints fatigue damage is revealed. The overall results prove that producing lap-joints by refill FSSW with sealant improves considerably the fatigue performance.

引用

页数：11

共 40 条

[1] [Anonymous], 2003, 143242003 ISO
[2] Effect of tool geometry on hook formation and static strength of friction stir spot welded aluminum 5754-O sheets
Badarinarayan, H.
Shi, Y.
Li, X.
Okamoto, K.
[J]. INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE, 2009, 49 (11) : 814 - 823
[3] Boldsaikhan E., 2016, SAE TECHNICAL PAPER, DOI [10.4271/2016-01-2130, DOI 10.4271/2016-01-2130]
[4] Refill friction stir spot welding of surface-treated aerospace aluminum alloys with faying-surface sealant
Boldsaikhan, Enkhsaikhan
Fukada, Shintaro
Fujimoto, Mitsuo
Kamimuki, Kenichi
Okada, Hideki
[J]. JOURNAL OF MANUFACTURING PROCESSES, 2019, 42 : 113 - 120
[5] Fatigue assessment of refill friction stir spot weld in AA 2024-T3 similar joints
Brzostek, R. C.
Suhuddin, U.
dos Santos, J. F.
[J]. FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES, 2018, 41 (05) : 1208 - 1223
[6] Bussu G, 2000, THESIS CRANFIELD U
[7] Self-consistent modelling of the plastic deformation of FCC polycrystals and its implications for diffraction measurements of internal stresses
Clausen, B
Lorentzen, T
Leffers, T
[J]. ACTA MATERIALIA, 1998, 46 (09) : 3087 - 3098
[8] Davis J.R., 1993, ALUMINUM ALUMINUM AL
[9] Refill friction stir spot welding of aerospace alloys in the presence of interfacial sealant
de Sousa Santos, Pedro
McAndrew, Anthony R.
Gandra, Joao
Zhang, Xiang
[J]. WELDING IN THE WORLD, 2021, 65 (08) : 1451 - 1471
[10] dos Santos J, 2004, patent, Patent No. [6,722,556B2, 6722556]

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