Optimum heat source position offset in welding of dissimilar Al-Cu metals using a theoretical approach

Pandya, Shailesh N.; Menghani, Jyoti

doi:10.1016/j.matpr.2018.08.187

Cited by 5 publications

(8 citation statements)

References 12 publications

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“…Additionally, several other works, in which micro-welding of electrical contacts [ 85 , 86 , 87 , 88 ], the influence of the choice of filler material and welding modes on the microstructure and mechanical properties of welded joints [ 72 , 89 , 90 , 91 , 92 ], studies of the optimal offset of the heat source based on the diagram phase state [ 93 ] are considered, are dedicated to laser welding of aluminum and copper.…”

Section: Laser Welding Of Aluminum Alloys To Coppermentioning

confidence: 99%

A Review: Laser Welding of Dissimilar Materials (Al/Fe, Al/Ti, Al/Cu)—Methods and Techniques, Microstructure and Properties

Kuryntsev

2021

Materials

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Modern structural engineering is impossible without the use of materials and structures with high strength and low specific weight. This work carries out a quantitative and qualitative analysis of articles for 2016–2021 on the topic of welding of dissimilar alloys. It is found that laser welding is most widely used for such metal pairs as Al/Fe, Al/Ti, and Al/Cu. The paper analyzes the influence of the basic techniques, methods, and means of laser welding of Al/Fe, Al/Ti, and Al/Cu on the mechanical properties and thickness of the intermetallic compound (IMC). When welding the lap joint or spike T-joint configuration of Al/Fe, it is preferable to melt the steel, which will be heated or melted, by the laser beam, and through thermal conduction, it will heat the aluminum. When welding the butt-welded joint of Al/Fe, the most preferable is to melt the aluminum by the laser beam (150–160 MPa). When welding the butt-welded joint of Al/Ti, it is possible to obtain the minimum IMC and maximum mechanical properties by offsetting the laser beam to aluminum. Whereas when the laser beam is offset to a titanium alloy, the mechanical properties are 40–50% lower than when the laser beam is offset to an aluminum alloy. When lap welding the Al/Cu joint, under the impact of the laser beam on the aluminum, using defocusing or wobbling (oscillation) of a laser beam, it is possible to increase the contact area of electrical conductivity with the tensile shear strength of 95–128 MPa.

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Section: Laser Welding Of Aluminum Alloys To Coppermentioning

confidence: 99%

A Review: Laser Welding of Dissimilar Materials (Al/Fe, Al/Ti, Al/Cu)—Methods and Techniques, Microstructure and Properties

Kuryntsev

2021

Materials

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“…Unlike other published work [5-8] that placed the softer material on the RS, placing the AA6061 on the AS in this work resulted in a higher tensile strength of 194.5 MPa (92.0% joint efficiency). Further, FSWed joints at test no.…”

Section: Resultsmentioning

confidence: 64%

“…The effect of rotational speed ( ω / ν ratio), material placement, tool pin offset and the peak temperature are all considered in this analysis. The qualitative description for the IMC formation in FSW of aluminium to copper, based on the work of Shailesh et al [5], has been modified and developed herein for use on aluminium to copper. Figure 6 shows the material volumes of AA6061 and copper in the case of 0 mm tool offset (b), d mm tool offset (c).…”

Section: Resultsmentioning

confidence: 99%

“…Additionally, the material volume beneath the FSW tool is known to form a simple parallelepiped shape which was not accounted for in their [4] work. More recently, Shailesh et al [5] advanced the work of Mishra et al [4] by assuming a cylindrical material volume under the FSW tool. Although the derived equations of Shailesh et al [5] were valid and logically accepted to represent the material volume under the FSW tool, there was again an absence of accurate thermo-mechanical data to fully support their method.…”

Section: Introductionmentioning

confidence: 99%

“…(ω/v) ratio. Overall, researchers [3][4][5][6][7][8][9][10][11][12][13][14][15][16] have not definitively demonstrated the negative or positive role played by the IMC particles. Furthermore, there is a lack of understanding towards the evolution of these IMCs during the FSW process of aluminium to copper.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Prediction and validation of intermetallic compound formation during friction stir welding of AA6061 to commercially pure copper

Karrar

Galloway

Toumpis

et al. 2022

Science and Technology of Welding and Joining

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A novel approach for predicting the intermetallic compound formation during friction stir welding of AA6061 to commercially pure copper has been developed, in addition to their effect on mechanical properties. The temperature distribution of the aluminium to copper weld nugget determined by a finite element model, the use of an Al-Cu phase diagram and the elemental concentration of copper and aluminium in the weld nugget have been combined to predict and validate several intermetallic compounds present in the different zones of the weldment. The results of performing butt-welding of these dissimilar metals using the friction stir welding process demonstrated that the highest ultimate tensile strength of 194.5 MPa was achieved at 1500 rpm tool rotational speed, 100 mm/min traverse speed and a zero-tool offset.

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The role of tool offset on the microstructure and mechanical properties of Al/Cu friction stir welded joints

Hou

Shah

Huang

et al. 2020

Journal of Alloys and Compounds

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Optimum heat source position offset in welding of dissimilar Al-Cu metals using a theoretical approach

Cited by 5 publications

References 12 publications

A Review: Laser Welding of Dissimilar Materials (Al/Fe, Al/Ti, Al/Cu)—Methods and Techniques, Microstructure and Properties

A Review: Laser Welding of Dissimilar Materials (Al/Fe, Al/Ti, Al/Cu)—Methods and Techniques, Microstructure and Properties

Prediction and validation of intermetallic compound formation during friction stir welding of AA6061 to commercially pure copper

The role of tool offset on the microstructure and mechanical properties of Al/Cu friction stir welded joints

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