Investigation of corrosion behavior of the AA5754 aluminum alloy joined using friction stir welding method

Mindivan, Ferda; Kaya, Hasan; Özer, Mithat Fırat; Uçar, Mehmet; Samur, R.

doi:10.18466/cbujos.96235

Cited by 4 publications

(5 citation statements)

References 13 publications

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“…95-196.26 MPa and elongation values between 10.8-14.5%. They reported that tensile damage has occurred in the thermomechanically affected zone [15]. In this study, Tensile strength values of AA5754-AA5754 joints were found to close to each other in despite of increasing heat input (Figure 3b), due to the non-heat treatable characteristic of AA5754 and working principle of CMT welding.…”

Section: Tensile and Bending Testssupporting

confidence: 55%

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Mechanical Properties of Aa5754 Sheets Welded by Cold Metal Transfer Method

Durmuş¹,

Çömez²

2017

NWSA

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Cold Metal Transfer (CMT) is a modified gas metal arc welding method. This method is different from conventional gas metal arc welding methods. In this process the heat input and the formation of spatter are reduced with the control of the wire movement and arc. So, CMT welding became indispensable in the welding of thin sheets. The importance of lightweight structures in vehicles is increasing day by day, so the use of thin sheet aluminum alloys such as AA5754 is becoming increasingly widespread. In present study, 2mm thick AA5754 sheets were joined with cold metal transfer welding using ER5356 (AlMg5) filler wire. The effect of heat input on the weld quality was investigated. Microstructural examinations were executed by optical microscope and SEM. Mechanical properties of joints were determined by tensile and bending tests. It was found that increasing heat input did not have a significant effect on tensile strength of AA5754-AA5754 joints, while it corrupted the bending strength.

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Section: Tensile and Bending Testssupporting

confidence: 55%

“…Fracture surface with fine dimples indicates the ductile characteristic of AA5754 (Figure 4b). Mindivan et al (2015) joined the 2mm thick AA5754 plates with friction stir welding (1600rpm, 125mm/min). They obtained tensile strength values between 189.…”

Section: Tensile and Bending Testsmentioning

confidence: 99%

Mechanical Properties of Aa5754 Sheets Welded by Cold Metal Transfer Method

Durmuş¹,

Çömez²

2017

NWSA

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“…According to microstructural, mechanical, and residual stress tests of four Al alloys AA 5154, thermal input rather than tool deformation afects welding parameters. To better understand the impacts of postweld heat treatment on 2219-O aluminium alloy microstructure and mechanical characteristics, Mindivan et al [6] conducted a series of tests, tensile tests of heattreated regions increase as solution temperature rises, up to 260% greater than the base metal's (BM) maximum allowable tensile strength.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Magnesium and Chromium Fillers FSW Dissimilar Joint of AA6063 and AA 5154

Krishnamoorthi

Prabhahar

Prakash

et al. 2023

Advances in Materials Science and Engineering

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Friction stir welding (FSW) is a solid-state metal joining process. There is no melting and recasting of metal while welding is used. Some of the defects commonly encountered in FSW are tunnel defect, bond, cracks, pin holes, and pipping defects. The defects occur because of improper metal mixing and less heat input in the weld nugget zone. In the fusion welding process, a filler rod is employed to form a quality weld with superior mechanical properties. In this work magnesium and chromium powders are used as filler materials. The purpose of this study is to ascertain whether filler materials and manufacturing processes have an impact on the weld nugget zone spot weld joint formation as well as the mechanical and abrasive properties of welded joints. This study's FSW filler materials mixing ratio and process parameters were improved by using the Central Composite Design (CCD) idea, which is discussed in more detail below Response Surface Methodology (RSM). The best empirical relationship between the parameters was provided by the CCD. The mathematical relationships were established to forecast the maximum tensile strength, maximum weld nugget hardness, and minimum corrosion rate by incorporating filler materials with process parameters. The optimal processing factors combination is predicted by conducting the validation test. The optimum parameters were the tool rotatory speed 600–1000 revolution per minute, welding speed 60 to 180 mm/min, plunge depth of 0.05 to 0.25 mm, center distance between the sample is 0–4 mm, as well as powder mixing ratio of 90 : 10, 92.5 : 7.5, 95 : 5, 97.5 : 2.5, and 100 : 0, the tensile test, microhardness, and corrosion rate analysis were conducted on the weld specimen. The welded test specimen provides better joint strength, weld nugget hardness, and enhanced corrosion resistance properties. The microstructure analysis shows the fine grain structure and homogeneous distribution of filler material with the base metal in the welded area.

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“…The EN AW-5754 (AlMg3) aluminum alloy was selected in the present work because of great interest in the automobile and aircraft industries as well as offshore construction applications due to its high specific strength and low density. In these applications materials are exposed to the marine environment that has a large presence of airborne salt particles and experiences a cyclic change in temperature [ 17 , 18 ]; hence the selection of EN AW-5754 due to its outstanding corrosion resistance to seawater and industrially polluted atmosphere [ 19 , 20 , 21 ]. Aluminum alloys are generally passive materials and pose a good corrosion resistance when exposed to neutral aqueous solutions [ 22 ].…”

Section: Introductionmentioning

confidence: 99%

“…It is shown that AA5754 alloy has better corrosion resistance in NaCl solution than pure aluminum due to the small fraction of iron present in aluminum [ 22 ]. It is also found that in AA 5754 aluminum alloy FSW joints TMAZ is most susceptible and HAZ is the most resistant to corrosion [ 20 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Corrosion and Surface Finishing on Fatigue Behavior of Friction Stir Welded EN AW-5754 Aluminum Alloy Using Various Tool Configurations

et al. 2020

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In this study, fatigue behavior of surface finished and precorroded friction stir welded (FSW) specimens using various tool configurations were comparatively investigated by the load increase method. The FSW using conventional, stationary shoulder and dual-rotational configurations was carried out by a robotized tool setup on 2 mm EN AW-5754 aluminum sheets in butt joint formation. After extraction of the specimens, their weld seam and root surfaces were milled to two different depths of 200 µm and 400 µm to remove the surface and the FSW tool shoulder effects. This surface finishing process was performed to investigate the effect of the surface defects on the fatigue behavior of the FSW EN AW-5754 aluminum alloy sheets. It was found that material removal from the weld and root surfaces of the specimens, increased the fracture stresses of conventional and dual-rotational FSW from 204 to 229 MPa and 196 to 226 MPa, respectively. However, this increase could not be detected in stationary shoulder FSW. Specimens with finished surfaces, which showed superior properties, were used in salt spray and cyclic climate change test to investigate the effect of corrosion on the fatigue behavior of FSW specimens. It was shown that cyclic climate change test reduced the fatigue properties of the base material, conventional, stationary shoulder and dual-rotational FSW approximately 1%–7%. This decrease in the fatigue properties was greater in the case of the salt spray test, which was 7% to 21%.

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Investigation of corrosion behavior of the AA5754 aluminum alloy joined using friction stir welding method

Cited by 4 publications

References 13 publications

Mechanical Properties of Aa5754 Sheets Welded by Cold Metal Transfer Method

Mechanical Properties of Aa5754 Sheets Welded by Cold Metal Transfer Method

Investigation of Magnesium and Chromium Fillers FSW Dissimilar Joint of AA6063 and AA 5154

Effect of Corrosion and Surface Finishing on Fatigue Behavior of Friction Stir Welded EN AW-5754 Aluminum Alloy Using Various Tool Configurations

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