Effects of Al‐Ni powder addition on dissimilar friction stir welding between AA7075‐T6 and 304 L

Muhamad, Mohd Ridha; Jamaludin, Mohd Fadzil; Yusof, Farazila; Mahmoodian, Reza; Morisada, Yoshiaki; Suga, Tetsuo; Fujii, Hidetoshi

doi:10.1002/mawe.201900105

Cited by 13 publications

(5 citation statements)

References 21 publications

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“…They also found that tool offset is critical to the success of joints, in agreement with Jabraeili et al [50]. Muhamad et al [52] investigated the effect of the addition of Al-Ni powder on the performance of Al 7075-T6/AISI 304L FSWed butt joints. They found that the Al-Ni powder addition increased the tensile strength due to the increased contact at the interface during lower tool rotational speeds.…”

Section: Introductionsupporting

confidence: 64%

“…The surface appearance of the welded joints became smoother as the rotational speed of the tool was raised from 300 to 500 RPM, and then the weld failed at a rotation speed of 600 RPM. It is well documented that rotational speed and traverse speed have a direct effect on the thermal history of the FSWed joints [52]. This is attributed to an increase in heat input due to the tool rotation speed increase.…”

Section: Surface Appearance and Macrostructurementioning

confidence: 99%

“…Some previous studies concerning this combination focused on the microstructure evolution in different joining configurations. In butt joining configuration, some investigations dealt with the relation between mechanical strength and the existence of stainless steel particles in the aluminum or on the IMC growth following the main process parameters [50][51][52][53][54][55][56][57][58][59][60][61][62][63].…”

Section: Introductionmentioning

confidence: 99%

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Friction Stir Welding of Dissimilar Al 6061-T6 to AISI 316 Stainless Steel: Microstructure and Mechanical Properties

et al. 2023

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The friction stir welding (FSW) process was recently developed to overcome the difficulty of welding non-ferrous alloys and steels. In this study, dissimilar butt joints between 6061-T6 aluminum alloy and AISI 316 stainless steel were welded by FSW using different processing parameters. The grain structure and precipitates at the different welded zones of the various joints were intensively characterized by the electron backscattering diffraction technique (EBSD). Subsequently, the FSWed joints were tensile tested to examine the mechanical strength compared with that of the base metals. The micro-indentation hardness measurements were conducted to reveal the mechanical responses of the different zones in the joint. The EBSD results of the microstructural evolution showed that a significant continuous dynamic recrystallization (CDRX) occurred in the stir zone (SZ) of the Al side, which was mainly composed of the weak metal, Al, and fragmentations of the steel. However, the steel underwent severe deformation and discontinuous dynamic recrystallization (DDRX). The FSW rotation speed increased the ultimate tensile strength (UTS) from 126 MPa at a rotation speed of 300 RPM to 162 MPa at a rotation speed of 500 RPM. The tensile failure occurred at the SZ on the Al side for all specimens. The impact of the microstructure change in the FSW zones was significantly pronounced in the micro-indentation hardness measurements. This was presumably attributed to the promotion of various strengthening mechanisms, such as grain refinement due to DRX (CDRX or DDRX), the appearance of intermetallic compounds, and strain hardening. The aluminum side underwent recrystallization as a result of the heat input in the SZ, but the stainless steel side did not experience recrystallization due to inadequate heat input, resulting in grain deformation instead.

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Section: Introductionsupporting

confidence: 64%

Section: Surface Appearance and Macrostructurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Friction Stir Welding of Dissimilar Al 6061-T6 to AISI 316 Stainless Steel: Microstructure and Mechanical Properties

et al. 2023

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“…This method is successfully used in many industries, including aviation, automotive, shipbuilding, spacecraft or railways [2,3]. FSW treatment has great potential for joining similar materials such as aluminum [4,5], copper [6], steel [7] and dissimilar materials such as aluminum and steel [8,9], aluminium and copper [10,11] or aluminium and titanium [12]. In the literature, it can be fi nd also tests of welding of dissimilar alloys with diff erent thicknesses [13].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Brushing on Residual Stress and Surface Roughness of EN AW-2024-T3 Aluminum Alloy Joints Welded Using the FSW Method

Bucior¹,

Kluz²,

Trzepieciński³

et al. 2023

Adv. Sci. Technol. Res. J.

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This article presents the infl uence of the brushing process on residual stress and surface roughness of EN AW-2024-T3 aluminum alloy joints welded using the Friction Stir Welding (FSW) method. Butt joints with thicknesses of 2 mm were brushing with using ceramic brush. The aim of the study was to fi nd optimal parameters of the brushing process, which would signifi cantly improve the functional properties of welded joints. The experiments were carried out in two steps. In the fi rst stage of the research, the feed rate was changed in the range f = 40÷120 mm/min with a constant brushing depth d = 0.5 mm. The roughness decreased from Sa = 5.285 µm for the specimen after welding to Sa = 2.460 µm for the f = 120 mm/min and d = 0.5 mm. The change in the parameters of the brushing process did not have a signifi cant impact on the state of residual stresses. Hence, in the second step, the brushing depth was increased in steps of 0.1 mm. The best properties were obtained for f = 120 mm/min and d = 0.6 mm (variant 6A), where roughness was Sa = 0.443 µm and compressive stresses σ = -118 MPa.

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“…In latest years, different researchers focused their studies on the production of reinforced aluminium dissimilar alloys. Muhamad et al [13] produced dissimilar AA7075-AISI304 FSW-joints investigating the effect of the addition of a different amount of Al-Ni powder into the joint-line. The authors detected a metallurgical reaction as an effect of the reinforcing addition, thus promoting an increase of the tensile properties of the joint; however, they found that the selection of specific process parameters, in this case low rotational speed, is fundamental to obtain the desired increase in the static mechanical characteristics.…”

Section: Introductionmentioning

confidence: 99%

Impact behaviour of dissimilar AA2024-T351/7075-T651 FSWed butt-joints: effects of Al2O3-SiC particles addition

Morales

Merlin

Fortini

et al. 2022

Frattura Ed Integrità Strutturale

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Dissimilar friction stir welding joints are widely employed in the industrial field due to the excellent microstructural and mechanical properties of the resulting joints. Nevertheless, to further enhance the weld properties, the addition of reinforcement particles on the joint-line during the process has been proven effective for increasing its mechanical performance. In the present investigation, the microstructure and the impact behaviour of FSWed joints between AA2024-T351 and AA7075-T651 aluminium plates were investigated, considering the effect of different process parameters selected through a full factorial 2k design of experiments: both the rotational and translational speed of the tool, as well as the addition of Al2O3-SiC microparticles, were considered as input parameters. Unnotched 10 x 5 x 55 mm impact specimens were tested through an instrumented 50 J Charpy pendulum: total impact energy, the two complementary initiation and propagation energies as well as the peak force were correlated to the adopted process parameters. From the performed analyses, it was found that joints with reinforcing particles are prone to form wormhole defects across the stir zone that not only affect the microstructural development, but also the impact behaviour since they require less energy at break in comparison with joints fabricated without particles addition.

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Effects of Al‐Ni powder addition on dissimilar friction stir welding between AA7075‐T6 and 304 L

Cited by 13 publications

References 21 publications

Friction Stir Welding of Dissimilar Al 6061-T6 to AISI 316 Stainless Steel: Microstructure and Mechanical Properties

Friction Stir Welding of Dissimilar Al 6061-T6 to AISI 316 Stainless Steel: Microstructure and Mechanical Properties

The Effect of Brushing on Residual Stress and Surface Roughness of EN AW-2024-T3 Aluminum Alloy Joints Welded Using the FSW Method

Impact behaviour of dissimilar AA2024-T351/7075-T651 FSWed butt-joints: effects of Al2O3-SiC particles addition

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