Effect of Laser Beam Oscillation on Laser Welding–Brazing of Ti/Al Dissimilar Metals

Chen, Xi; Lei, Zhenglong; Chen, Yanbin; Yu, Han; Jiang, Meng; Tian, Ze; Bi, Jing; Lin, Sanbao; Jiang, Nan

doi:10.3390/ma12244165

Cited by 22 publications

(11 citation statements)

References 28 publications

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“…The authors of [ 63 ] investigate the influence of the parameters of laser butt welding modes of titanium alloy Ti6Al4V and aluminum alloy AA6061 with a thickness of 4.5 mm and 5 mm, respectively. The main variable parameters of welding regimes are Laser power (1.5–3.5 kW), Laser beam oscillation frequency (25–30 Hz), Laser offset (1.1–1.2 mm), the laser beam was offset to an aluminum alloy, the beam oscillation trajectory is sinusoidal, the welding speed is constant 1 m/min.…”

Section: Laser Welding Of Aluminum Alloys To Titanium Alloysmentioning

confidence: 99%

“…From the above, it follows that in [ 60 , 61 , 62 , 63 ], experimenters used low laser welding speeds of 11–17 mm/s, and in works [ 17 , 20 , 64 , 65 , 66 ], the used welding speeds were tens of times higher (100–833 mm/s). At the same time, as a result of a higher laser beam offset on the aluminum alloy, the IMC is comparable in both cases (2–6 μm).…”

Section: Laser Welding Of Aluminum Alloys To Titanium Alloysmentioning

confidence: 99%

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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 Titanium Alloysmentioning

confidence: 99%

Section: Laser Welding Of Aluminum Alloys To Titanium Alloysmentioning

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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“…The binary phase diagram was proposed by Murray in 1987 [88] and is shown in Figure 24. The formation and growth of the Ti-Al IMC layer is illustrated in Figure 25 [53,77,[173][174][175][176][177][178][179][180]. For higher heat input, there is a substantial growth in the TiAl 3 phase with frequent detachment, providing an island-like morphology.…”

Section: Formation and Growth Of Ti-al Imc Layermentioning

confidence: 99%

A Review on Laser-Assisted Joining of Aluminium Alloys to Other Metals

Bunaziv

Akselsen

Ren

et al. 2021

Metals

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Modern industry requires different advanced metallic alloys with specific properties since conventional steels cannot cover all requirements. Aluminium alloys are becoming more popular, due to their low weight, high corrosion resistance, and relatively high strength. They possess respectable electrical conductivity, and their application extends to the energy sector. There is a high demand in joining aluminium alloys with other metals, such as steels, copper, and titanium. The joining of two or more metals is challenging, due to formation of the intermetallic compound (IMC) layer with excessive brittleness. High differences in the thermophysical properties cause distortions, cracking, improper dilution, and numerous weld imperfections, having an adverse effect on strength. Laser beam as a high concentration energy source is an alternative welding method for highly conductive metals, with significant improvement in productivity, compared to conventional joining processes. It may provide lower heat input and reduce the thickness of the IMC layer. The laser beam can be combined with arc-forming hybrid processes for wider control over thermal cycle. Apart from the IMC layer thickness, there are many other factors that have a strong effect on the weld integrity; their optimisation and innovation is a key to successfully delivering high-quality joints.

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“…In many engineering applications, multiple metals are required [1,2]. For example, Mg and Cu alloys are widely used in the aerospace, automobile, and manufacturing industry.…”

Section: Introductionmentioning

confidence: 99%

Improvement of the Laser-Welded Lap Joint of Dissimilar Mg Alloy and Cu by Incorporation of a Zn Interlayer

Dai

Ruan

et al. 2020

Materials

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During pulsed laser welding of AZ 31B magnesium (Mg) alloy and T2 pure copper (Cu), Cu2Mg and Mg2Cu are generated, but the bonding ability of the two compounds is usually weak, resulting in low strength. In order to improve the joint of two dissimilar metals, a zinc interlayer was inserted between the Mg alloy and Cu, and the effects of the thickness of the Zn interlayer on the microstructure and properties of the joint were studied. The fused zone consisted of Cu2Mg and MgZn, and, according to first-principles calculation, in the same energy range, the area enclosed by the density of the state curve of MgZn was larger than that of Cu2Mg. Hence, the bonding ability of MgZn was better than that of Cu2Mg, and MgZn improved the strength of the welded joint. The most advantageous thickness of the Zn interlayer was 0.1 mm, and the shear strength was 48.15 MPa that was 161% higher than that of the directly welded Mg/Cu joint.

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Effect of Laser Beam Oscillation on Laser Welding–Brazing of Ti/Al Dissimilar Metals

Cited by 22 publications

References 28 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

A Review on Laser-Assisted Joining of Aluminium Alloys to Other Metals

Improvement of the Laser-Welded Lap Joint of Dissimilar Mg Alloy and Cu by Incorporation of a Zn Interlayer

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