Microstructure and mechanical properties of laser-arc hybrid welding joint of GH909 alloy

Liu, Ting; Yan, Fengyuan; Liu, Sang; Li, Ruoyang; Wang, Chunming; Hu, Xiyuan

doi:10.1016/j.optlastec.2015.12.020

Cited by 33 publications

(7 citation statements)

References 25 publications

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“…The microstructure characteristics of laser-MIG hybrid welded mild steel investigated by Gao et al (2008) indicated that the microstructure of HAZ was made up of coarse grain region near the weld junction, fine grain region and incomplete recrystallization region near the substrate. The experimental results of Liu et al (2016) showed that the coarse and larger grain was found in HAZ and the columnar crystals were perpendicular to the fusion boundary. Cao et al (2014) studied the microstrucutre and properties of Ti/Cu welded joints by CMT technology, and found that columnar crystals which grow into the weld metal were distributed in the fusion line zone near Cu base metal side.…”

Section: Microstructural Characteristics Of Overcast Hybrid Structurementioning

confidence: 95%

“…The HAZ is usually a serious concern in conventional welding process. The work done by Liu et al (2016) showed that the HAZ was composed of equiaxed grains in various sizes and the hardness in HAZ was lower than that in base metal. Stathers et al (2014) established the relationships between hardness and tensile properites in the HAZ for the 6060-T651 aluminium alloy via a gas metal arc weld method.…”

Section: Mechanical Properties In Overcast Structurementioning

confidence: 99%

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Interfacial characterisation of overcasting a cast Al-Si-Mg (A356) alloy on a wrought Al-Mg-Si (AA6060) alloy

Zhang

Scamans

et al. 2017

Journal of Materials Processing Technology

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The microstructure and tensile properties of hybrid Al-Si-Mg (A356) and Al-Mg-Si (AA6060) materials were investigated through overcasting. The solid bonding at AA6060/A356 interface was obtained under as-cast condition and T7 heat-treated condition. The oxide film on the surface of the AA6060 inserts was successfully removed by properly designed casting structure and optimised overcasting process. Fine equiaxed primary α-Al grains could be formed at the bonding interface, during which the primary α-Al grains in the A356 alloy were grown up on the primary α-Al grains in the solid inserts of AA6060 alloy. EBSD results revealed that these two types of primary α-Al grains exhibited the same orientation, indicating the cast A356 alloy and the wrought AA6060 alloy shared one primary α-Al grain at the interface. The interfacial bonding strength was measured at a level of 180MPa.Heat-affected zone was not significant in the overcast structure because the decrease of the ultimate tensile strength of overcast arts was only 3-5% in comparison with the properties of the original AA6060 alloys under aged condition.

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Section: Microstructural Characteristics Of Overcast Hybrid Structurementioning

confidence: 95%

Section: Mechanical Properties In Overcast Structurementioning

confidence: 99%

Interfacial characterisation of overcasting a cast Al-Si-Mg (A356) alloy on a wrought Al-Mg-Si (AA6060) alloy

Zhang

Scamans

et al. 2017

Journal of Materials Processing Technology

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show abstract

“…Generally, the laser beam is directed normal to the welding material surface to obtain better penetration. However, during the welding of highly reflective materials the laser beam is tilted at an angle in order to avoid any damages of the laser head due to the reflected beam, that must be different from the electrode's angle [45].…”

Section: Hybrid Welding With Laser Beam and Electric Arc -Hlawmentioning

confidence: 99%

“…The geometry and metallurgical properties of the weld strictly depend on the balance between the influences of the laser source and arc source [50]. In HLAW increasing of the power ratio leads to a narrow weld width, reducing the tendency of grain growth and modifies the microstructure of fusion zone [16,45,51,52]. In conditions of constant filler wire feed rate and laser power, a higher power arc causes an increase of the width of the bead until it reaches a maximum value [53].…”

Section: Hybrid Welding With Laser Beam and Electric Arc -Hlawmentioning

confidence: 99%

Hybrid laser arc welding: State of the art in technology

Petreski¹,

Runchev²,

Vrtanoski³

2021

Zavariv zavar konstrukcije

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Hybrid laser arc welding is complex process where two heat sources act simultaneously in a common weld pool. The synergy effect of laser beam and electric arc offers several advantages over other individual technological processes, such as: higher welding speed, increased productivity, deeper penetration, better gap bridging ability, stable process, less heat input to the welding material, etc. However, the combination of two heat sources in a single welding process leads to large number of parameters that need to be synchronized and optimized in order to obtain a perfect weld. This paper presents the current state of hybrid laser arc welding in terms of its development, industrial application and scientific research. The introduction part contains a general overview of the hybrid laser arc welding process, its advantages and operating principles, and chronological development. In the second part, welding parameters that directly influence on the hybrid process have been discussed. The third part presents the performance and weld qualities achieved by hybrid welding process in accordance with previous research. In the final part, examples of industrial application and conclusions for further research and development related to hybrid laser arc welding are given.

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“…Laser-arc hybrid welding technology is an efficient new welding method. It can give full play to the advantages of two welding heat sources, producing synergistic effect, obtaining good welding quality and production benefits, improving the bridging ability of groove gap and obtaining greater welding penetration [36][37][38][39][40]. Therefore, laser-arc hybrid welding has attracted more and more attention [41][42][43][44].…”

Section: Introductionmentioning

confidence: 99%

Innovations in Monitoring, Control and Design of Laser and Laser-Arc Hybrid Welding Processes

Cheng

Ning

et al. 2021

Metals

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With the rapid development of high power laser, laser welding has been widely used in many fields including manufacturing, metallurgy, automobile, biomedicine, electronics, aerospace etc. Because of its outstanding advantages, such as high energy density, small weld size, easy automation. Combining the two heat sources of laser and arc for welding can achieve excellent results due to the synergistic effect. Laser welding is a complicated physical and chemical metallurgical process, involving the laser beam and molten pool, keyholes and materials melting, evaporation and multiple physical process. Process monitoring and quality control are important content of research and development in the field of laser welding, which is the premise to obtain fine weld with high quality. Numerical simulation technology can describe many complex physical phenomena in welding process, which is very important to predict weld forming and quality and clarify the underline mechanism. In this paper, the research progress of process monitoring, quality control and autonomous intelligent design of laser and laser-arc hybrid welding based on numerical simulation were reviewed, and the research hotspots and development trends of laser welding in the future are predicted.

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Microstructure and mechanical properties of laser-arc hybrid welding joint of GH909 alloy

Cited by 33 publications

References 25 publications

Interfacial characterisation of overcasting a cast Al-Si-Mg (A356) alloy on a wrought Al-Mg-Si (AA6060) alloy

Interfacial characterisation of overcasting a cast Al-Si-Mg (A356) alloy on a wrought Al-Mg-Si (AA6060) alloy

Hybrid laser arc welding: State of the art in technology

Innovations in Monitoring, Control and Design of Laser and Laser-Arc Hybrid Welding Processes

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