Peculiarities of AD33 aluminum alloy hand laser welding

The comparative investigation results of AD33 aluminum alloy welded joint quality dependence upon changes in a laser beam motion rate for conditions of hand and automatic laser welding are shown. A micro-structure of a welded joint at the hand and automatic laser welding of the AD33 alloy is investigated.

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اختيار نظام لحام صفائح من النيكل بالليزر وتأثير بارامترات هذا النظام في أبعاد الدرزات اللحامية الناتجة

FES Journal of Engineering Sciences ◽

10.52981/fjes.v3i1.73 ◽

2008 ◽

Vol 3 (1) ◽

pp. 10

Author(s):

عصام موسى

Keyword(s):

Laser Beam ◽

Laser Welding ◽

Weld Metal ◽

Cross Sections ◽

Welded Joints ◽

Welded Joint ◽

Nickel Plate ◽

Micro Structure ◽

Focusing Distance

The effect of Laser welding system’s parameters on the dimensions of Nickel welded joint with thickness not more than (1.0 mm) was studied. The principal parameters of impulsed Laser in this case , which had influence on the welded spot’s dimensions ( spot’s diameter D & penetration h ) , are : the power of Laser beam , impulse time & the focusing distance of Laser beam to the welded joint. It was resulted that the values of dimension ( h ) increased (with high accelerating ) by the increasing of Laser beam’s power & impulse time & the decreasing of focusing distance , but the values of dimension D increased very slowly by the changes of above – mentioned parameters , and as result the values of melting form’s coefficient (Ψ = D / h ) decreased & reached the minimum when the melting penetration was about 1.0 mm ( the thiclness of Nickel plate ) . The micro-structure studying of cross sections in the welded joints showed that if the power of Laser beam was so high that the tmperature of welded spot was so high than the meting point of welded metal, the latest one obsorbed a lot of gases from the surrounded atmosphere and variuos defects were noticed in this weld metal. So, it’s too important to use a sheilding gas ( like Argon ) to improve the reaction of these gases with the weld metal .

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Effect of Different Filler Towards Welding of AA6061 Al Alloy by X-Ray CT Scan

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.146-147.1402 ◽

2010 ◽

Vol 146-147 ◽

pp. 1402-1405 ◽

Cited By ~ 2

Author(s):

Che Lah Nur Azida ◽

Azman Jalar ◽

Norinsan Kamil Othman ◽

Nasrizal Mohd Rashdi ◽

Md Zaukah Ibel

Keyword(s):

Aluminum Alloy ◽

Ct Scan ◽

Welded Joint ◽

Gas Metal Arc Welding ◽

Butt Joint ◽

Al Alloy ◽

X Ray ◽

Metal Arc Welding ◽

Joint Quality ◽

Filler Metals

AA6061 Aluminum alloy welded joint using two different filler metals were studied by using X-ray CT-Scan. The filler metals ER 4043 and ER 5356 were used in this present work in order to investigate the effect of using different filler metals on the welded joint quality of AA 6061 aluminum alloy in welded zone microstructure. Gas metal arc welding (GMAW) technique and V grove butt joint with four layers and five passes welded joint were performed. From this investigation, it is found that AA6061 with ER 4043 showed less distribution of porosity compared to AA6061 with ER 5356 welded joint confirmed by X-ray Ct-Scan. The decreasing of porosities and presence of very fine grains in weld region area with ER 5356 compared to ER 4043 will be discussed in term of microstructure analysis.

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Comparative investigation between fiber laser and disk laser: Microstructure feature of 2219 aluminum alloy welded joint using different laser power and welding speed

Optics & Laser Technology ◽

10.1016/j.optlastec.2021.107121 ◽

2021 ◽

Vol 141 ◽

pp. 107121

Author(s):

Shi He ◽

Liyuan Liu ◽

Yanqiu Zhao ◽

Yue Kang ◽

Feifan Wang ◽

...

Keyword(s):

Aluminum Alloy ◽

Fiber Laser ◽

Welding Speed ◽

Laser Power ◽

Welded Joint ◽

Comparative Investigation ◽

Disk Laser ◽

2219 Aluminum Alloy

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Microstructural Characterization and Mechanical Properties of Laser Beam-Welded Dissimilar Joints between A6000 Aluminum Alloy and Galvanized Steel

Materials ◽

10.3390/ma15020543 ◽

2022 ◽

Vol 15 (2) ◽

pp. 543

Author(s):

Nkopane Angelina Ramaphoko ◽

Samuel Skhosane ◽

Nthabiseng Maledi

Keyword(s):

Mechanical Properties ◽

Aluminum Alloy ◽

Laser Beam ◽

Laser Welding ◽

Heat Input ◽

Welding Process ◽

Galvanized Steel ◽

Vehicle Body ◽

Welding Parameters ◽

Dissimilar Joints

This paper presents the laser beam welding process of a lap joint between galvanized steel (Z225) and an aluminum alloy (A6000) from an IPG fiber laser. Welding of steel to aluminum has become popular in the automotive industry as a means of reducing the total vehicle body mass. This approach reduces fuel consumption and, ultimately, carbon emissions. Laser welding parameters used to control heat input for the study were laser power ranging between 800 and 1200 W, as well as laser welding speeds between 2 and 4 m/min. Distinct features of the dissimilar joints were microscopically examined. The SEM-EDS technique was employed to study the intermetallic phases along the Fe-Al interface. The outcome revealed the presence of “needle-like phases” and “island-shaped phases” at high heat inputs. Traces of both Fe2Al5 and FeAl3 phases were detected. For low heat input, there was evidence of insufficient fusion. Weld width was influenced by welding parameters and increased with an increase in heat input. Mechanical properties of the joints indicated that the microhardness values of the weld joints were higher than those of both base metals. The maximum tensile shear strength obtained was 1.79 kN for a sample produced at 1200 W and 3 m/min.

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

Materials ◽

10.3390/ma15010122 ◽

2021 ◽

Vol 15 (1) ◽

pp. 122

Author(s):

Sergey Kuryntsev

Keyword(s):

Mechanical Properties ◽

Laser Beam ◽

Laser Welding ◽

Structural Engineering ◽

Welded Joint ◽

Dissimilar Materials ◽

High Strength ◽

Specific Weight ◽

Lap Welding ◽

The Impact

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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