Friction stir welding process of dissimilar metals of 6061-T6 aluminum alloy to AZ31B magnesium alloy

Fu, Banglong; Qin, Guoliang; Li, Fēi; Meng, Xiangmeng; Zhang, Jianzhong; Wu, Chuansong

doi:10.1016/j.jmatprotec.2014.11.039

Cited by 201 publications

(96 citation statements)

References 20 publications

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“…The severely deformed zone showed complex and disordered patterns, which are represented by magnesium and aluminum swirls and vortexes, associated with the spiral flow of metals in the FSW process. Similar observations have previously been reported [10,21].…”

Section: Joint Appearance and Macrostructuresupporting

confidence: 93%

“…These properties give rise to the wide application of FSW in dissimilar welding [13][14][15][16][17]. Much work has been carried out on the FSW of Al to Mg in butt and lap joints [18][19][20][21]. The presence of mass brittle IMCs such as Al12Mg17 and Al3Mn2 may not be ignored in spite of successful FSW of Al-Mg and preventing the thick interlayer of brittle IMCs [22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

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The effect of changing chemical composition on dissimilar Mg/Al friction stir welded butt joints using zinc interlayer

Abdollah-zadeh

Shokuhfar

Cabrera

et al. 2018

Journal of Manufacturing Processes

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In this study, solid state joining technology of friction stir welding (FSW) was carried out for Al and Mg butt joints.To improve the microstructural characteristics of the banded structure zone, before to the FSW process, a Zn interlayer was also inserted in the butt joints. Optimal conditions for friction stir welding were obtained using a combination of two travel speeds (25 and 35 mm/min) and three rotation speeds (550, 600 and 650 rpm). Mg-Zn and Mg-Al-Zn IMCs, Al solid solution and residual Zn were the most common phases in the stirred zone, eliminating Al-Mg intermetallic formation. The joint fabricated at 35 mm/min and 600 rpm, in which tensile strength of the weld improved from 141 to 175 MPa and an elongation from 0.7 to 1.9 was achieved, gave the maximum mechanical properties compared with the Zn free sample FSWed under identical conditions. The fracture micrographs were compatible with the corresponding ductility results and the fracture surfaces of Zn added samples possessed a fine texture combining brittle and ductile fracture features. Meanwhile, the hardness level was lower than that of the Zn free sample because of the change in the IMCs composition of the Zn added samples.

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Section: Joint Appearance and Macrostructuresupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

The effect of changing chemical composition on dissimilar Mg/Al friction stir welded butt joints using zinc interlayer

Abdollah-zadeh

Shokuhfar

Cabrera

et al. 2018

Journal of Manufacturing Processes

View full text Add to dashboard Cite

show abstract

“…The welding interface does not have different materials than the joining components [4]. Although mechanical and microstructural properties of the welding joints of Mg alloys have been widely studied [5], their corrosion problems have not been overcome.…”

Section: Introductionmentioning

confidence: 99%

Structural and Corrosion Study of Uncoated and Zn-Cu Coated Magnesium-Based Alloy

Hacıibrahimoğlu

Bedır

Yavuz

2016

Metals

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Zn-Cu alloy was deposited onto AZ63 substrate, and the corrosion behaviour of resulting modified electrodes was investigated in 3 wt % NaCl solution in comparison with uncoated AZ63. Electrochemical, structural, and morphological study of the coating is presented. SEM images reveal that the surface morphology of the films is uniformly small spherical grain distributions. The XRD patterns illustrate polycrystalline structure and the formation of peaks corresponding to hexagonal close-packed ε-phase of Zn-Cu with various crystallographic orientations. Cyclic voltammetry was used to determine the potential ranges where the various redox processes occur. Linear sweep voltammetry results illustrate that longer exposure of uncoated AZ63 in NaCl solution produces a greater corrosion potential shift because of the formation of an oxide layer that did not prevent the progression of corrosion attack. The corrosion resistivity of Zn-Cu coated AZ63 is approximately two orders of magnitude greater than that of uncoated AZ63.

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“…FSW process was carried out using vertical milling machine. For this study, plate AA6061 was placed on advancing side [4,15] due to its higher mechanical strength and tool pin was positioned at the center of joint line. Process parameters used in this study are tabulated in Table 1.…”

Section: Materials Specification and Welding Processmentioning

confidence: 99%

Finite element modelling and updating of friction stir welding (FSW) joint for vibration analysis

2016

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Abstract.Friction stir welding of aluminium alloys widely used in automotive and aerospace application due to its advanced and lightweight properties. The behaviour of FSW joints plays a significant role in the dynamic characteristic of the structure due to its complexities and uncertainties therefore the representation of an accurate finite element model of these joints become a research issue. In this paper, various finite elements (FE) modelling technique for prediction of dynamic properties of sheet metal jointed by friction stir welding will be presented. Firstly, nine set of flat plate with different series of aluminium alloy; AA7075 and AA6061 joined by FSW are used. Nine set of specimen was fabricated using various types of welding parameters. In order to find the most optimum set of FSW plate, the finite element model using equivalence technique was developed and the model validated using experimental modal analysis (EMA) on nine set of specimen and finite element analysis (FEA). Three types of modelling were engaged in this study; rigid body element Type 2 (RBE2), bar element (CBAR) and spot weld element connector (CWELD). CBAR element was chosen to represent weld model for FSW joints due to its accurate prediction of mode shapes and contains an updating parameter for weld modelling compare to other weld modelling. Model updating was performed to improve correlation between EMA and FEA and before proceeds to updating, sensitivity analysis was done to select the most sensitive updating parameter. After perform model updating, total error of the natural frequencies for CBAR model is improved significantly. Therefore, CBAR element was selected as the most reliable element in FE to represent FSW weld joint.

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Friction stir welding process of dissimilar metals of 6061-T6 aluminum alloy to AZ31B magnesium alloy

Cited by 201 publications

References 20 publications

The effect of changing chemical composition on dissimilar Mg/Al friction stir welded butt joints using zinc interlayer

The effect of changing chemical composition on dissimilar Mg/Al friction stir welded butt joints using zinc interlayer

Structural and Corrosion Study of Uncoated and Zn-Cu Coated Magnesium-Based Alloy

Finite element modelling and updating of friction stir welding (FSW) joint for vibration analysis

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