A study on microstructure and mechanical properties of AA 3003 aluminum alloy joints by underwater friction stir welding

Tan, Yi; Wang, X.M.; Ma, Mingzhen; Zhang, J.X.; Liu, W.C.; Fu, Ruidong; Xiang, Song

doi:10.1016/j.matchar.2017.01.039

Cited by 96 publications

(48 citation statements)

References 40 publications

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“…The peak flow stress of the alloy is assumed to be consistent with the hyperbolic sine mathematical model proposed by Sellars and Tegart, [15][16] that is in Equation (1) [ ]…”

Section: Establishment Of the Constitutive Equationmentioning

confidence: 99%

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Establishment of dynamic-recrystallization-state diagram for hot deformation of 3003 aluminum alloy

Chen¹,

Fu²,

Wei³

et al. 2018

Mater. Tehnol.

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The 3003 aluminum alloy was deformed with isothermal compression in a range of deformation temperature of 300-500°C at a strain rate of 0.0l-10.0 s -1 with a Gleeble-1500 thermal simulator. The results show that the flow stress of the 3003 aluminum alloy decreases with an increase in the deformation temperature or a decrease in the strain rate. A flow-stress constitutive model was build. The critical strain and steady strain were obtained with the strain-hardening rate. The critical strain increases with an increase in the Zener-Hollomon (Z) parameter, and the steady-state strain decreases with an increase in the Z parameter (a decrease in the deformation temperature or increase in the strain rate). A dynamic-recrystallization (DRX) state diagram was established in accordance with the eigenvalues of the flow-stress curve. Based on a microstructure observation, it was found that the smaller the Z parameter and the greater the strain, more complete was DRX. Keywords: 3003 aluminum alloy, dynamic recrystallization, state diagram, strain-hardening rate Avtorji prispevka so aluminijevo zlitino 3003 izotermno tla~no deformirali v obmo~ju deformacijskih temperatur med 300°C in 500°C pri hitrostih deformacije med 0,0l s -1 in 10,0 s -1 na termi~nem simulatorju Gleeble-1500. Rezultati deformacijskih preizkusov so pokazali, da meja te~enja izbrane zlitine pada z nara{~ajo~o temperaturo deformacije ali z zmanj{evanjem hitrosti deformacije. Na osnovi preizkusov so avtorji izdelali tudi konstitutivni model za mejo te~enja v odvisnosti od temperature in hitrosti deformacije. Kriti~no deformacijo in stalno deformacijo so dobili s hitrostjo deformacijskega utrjevanja. Kriti~na deformacija je nara{~ala z nara{~anjem Zener -Hollomonovega (Z) parametra, in stanje stalne deformacije se je zmanj{evalo z nara{~anjem Z parametra (zmanj{anje temperature deformacije ali pove~evanje hitrosti deformacije). Diagram stanja dinami~ne rekristalizacije (DRX) so izdelali s pomo~jo karakteristi~nih vrednosti krivulj te~enja. S kombinacijo mikrostrukturnih preiskav, manj{ih Z parametrov in ve~jih deformacij, so lahko izdelali bolj celovit DRX.

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“…The peak flow stress of the alloy is assumed to be consistent with the hyperbolic sine mathematical model proposed by Sellars and Tegart, [15][16] that is in Equation (1) [ ]…”

Section: Establishment Of the Constitutive Equationmentioning

confidence: 99%

“…The function of the temperature and flow stress can be obtained according to Equation (1). Assuming that the hot-deformation activation energy is constant over a certain hot-deformation temperature range, and the strain rate remains constant, both sides of Equation (1) are transformed to obtain:…”

Section: Establishment Of the Constitutive Equationmentioning

confidence: 99%

Establishment of dynamic-recrystallization-state diagram for hot deformation of 3003 aluminum alloy

Chen¹,

Fu²,

Wei³

et al. 2018

Mater. Tehnol.

View full text Add to dashboard Cite

show abstract

“…The hardness distribution of the friction stir-welded joints is related to the materials and welding process. It is considered that it has a relation to the fatigue fracture position of alloy joints [1][2][3][4][5][6]. But some studies showed that fatigue cracks were independent from hardness distributions in the weld seams and the fatigue cracks initiated at the inhomogeneous microstructure [7].…”

Section: Introductionmentioning

confidence: 99%

“…But the tensile strength of the FSW joint has a linear relationship with the weld nugget hardness [9]. The fatigue properties of aluminum alloy FSW joints are also affected by the residual stress [2][3][4]. The residual stresses of aluminum alloy welded joints are dependent on the welding parameters and their distribution has a typical "M" profile [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Influence of Residual Stress on Fatigue Weak Areas and Simulation Analysis on Fatigue Properties Based on Continuous Performance of FSW Joints

Sun

Wei

Niu

et al. 2019

Metals

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The fatigue weak area of aluminum alloy for a friction stir-welded joint is investigated based on the hardness profile, the residual stress measurement and the simulation analysis of fatigue property. The maximum residual stresses appeared at the heat-affected zone of the joint in the fatigue damage process, which was consistent with the fracture location of the fatigue specimen. The fatigue joint model of continuous performance is established ignoring the original negative residual stress; considering that it will be relaxed soon when the joint is under tension-tension cyclic loading. The fatigue parameters of joint model is based on the static mechanical properties of the joint that obtained from the micro-tensile tests and four-point correlation method. The predicted results for the fatigue weak locations and fatigue lives based on the continuous performance joint model are closer to the fatigue experimental results by comparison with the simulation results of the partitioned performance joint model.

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“…Many researchers have been working to enhance the mechanical properties by applying, hybrid processes and various backing plate with different thermal diffusivity and improved tool design. In hybrid FSW, post weld heat treatment, underwater FSW, in process cooling FSW, and heat-assisted FSW such as laser-assisted FSW, electrical current assisted FSW, electric arc, tungsten arc, induction assisted FSW weld were used to enhance mechanical properties of FSW [3][4][5][6][7][8][9][10]. Santos et al [11] utilized electrical heat source in the tool probe tip as the additional heat and observed that the additional heat helps in reducing the lack of penetration in root side.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical analysis of the effect of preheating in friction stir welding

Alam¹,

Sinha²

2019

IJITEE

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Friction stir welding has been frequently used for fabrication of low melting point materials. Nevertheless, it is capable to join thin sheet of high melting point materials such as stainless steel, titanium etc. but tool wear rate is high. A Heat-assisted backing plate (HABP) was developed to preheating the welded specimen. In this paper, a modified 3D FE model was established to simulate the heat-assisted backing plate of friction stir welding by using ANSYS APDL to study of the temperature distribution of workpiece. Numerical simulation was defined by six different load steps for preheating, plunge, dwell, traverse, pull out of tool and cooling stage. Observations of preheated friction stir welding were compared with traditional friction stir welding results. It was found that the preheated friction stir welding increased 7.39 % and 7.55 % of peak temperature as compared to traditional friction stir welding in FEA and experimental respectively. In addition, preheating improve the uniform temperature distribution along the thickness of welded joint.

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A study on microstructure and mechanical properties of AA 3003 aluminum alloy joints by underwater friction stir welding

Cited by 96 publications

References 40 publications

Establishment of dynamic-recrystallization-state diagram for hot deformation of 3003 aluminum alloy

Establishment of dynamic-recrystallization-state diagram for hot deformation of 3003 aluminum alloy

Influence of Residual Stress on Fatigue Weak Areas and Simulation Analysis on Fatigue Properties Based on Continuous Performance of FSW Joints

Experimental and numerical analysis of the effect of preheating in friction stir welding

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