First assessment on the microstructure and mechanical properties of gtaw-gmaw hybrid welding of 6061-t6 AA

Rodríguez-Hernández, T.; Cruz-Hernández, V.L.; García-Rentería, M.A.; Torres-Gonzalez, R.; García-Villarreal, S.; Curiel-López, Francisco Fernando; Falcón-Franco, L.

doi:10.1016/j.jmapro.2020.09.069

Cited by 18 publications

(4 citation statements)

References 28 publications

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“…Shen et al [16] analyzed the effect of welding parameters on the formation of gas metal arc welding-gas tungsten arc welding (GMAW-GTAW) double-arc welding and provided optimal conditions for obtaining high-quality and good forming. Rodriguez et al [17] compared a 6.35 mm thick 6061 aluminum alloy with the GMAW process using the hybrid GTAW-GMAW and confirmed that the GTAW-GMAW promoted grain structure refinement and reduced porosity in the welded metal. In addition, the GTAW-GMAW process reduced the degradation in the heat-affected zone under the asweld condition and increased the welding speed by 40%.…”

Section: Introductionmentioning

confidence: 94%

Effects of Process Parameters on the Bead Shape in the Tandem Gas Metal Arc Welding of Aluminum 5083-O Alloy

et al. 2023

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In gas metal arc welding (GMAW), the weld bead shape is an important factor that is directly related to the weld quality of welded joints. This study investigates the effects of process parameters, including welding speed (WS) and leading and trailing wire feed rates (WFR), on the weld bead shape, including the leg length and penetration depth, in the tandem GMAW of aluminum 5083-O alloy. An asynchronous direct current–direct current pulse tandem GMAW system and a tandem GMAW torch were designed and applied to improve welding productivity and welding quality. Response surface methodology was used to analyze the effects of the process parameters on the weld bead shape and to estimate regression models for predicting the weld bead shape. As a result of observing arc behavior using a high-speed camera, it was confirmed that the leading WFR affects the penetration depth and the trailing WFR affects the leg length. The coefficient of determination (R2) of the regression models was 0.9414 for the leg length and 0.9924 for the penetration depth. It was also validated that the estimated models were effective in predicting the weld bead shape (leg length and penetration depth) representative of weld quality in the tandem GMAW process.

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Section: Introductionmentioning

confidence: 94%

Effects of Process Parameters on the Bead Shape in the Tandem Gas Metal Arc Welding of Aluminum 5083-O Alloy

et al. 2023

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“…As an important welding method between black and non-ferrous metals, gas tungsten arc welding (GTAW) uses the arc between the non-melting electrode and the base metal (BM) as the heat source to melt the welding wire or BM for weld forming [1][2]. However, the divergent arc in GTAW makes the heat input uneven, which results in a shallow molten pool, and the weld strength and toughness are lower than that of the BM [3][4][5]. In addition, because of heat input and other reasons, which result in large residual stress and plastic deformation in the weld and surrounding areas, are caused by the highly localised transient heat and strongly nonlinear temperature elds in both heating and cooling processes.…”

Section: Introductionmentioning

confidence: 99%

Effect of Process Parameters on Arc Behavior and Weld Formation in Weaving Gas Tungsten Arc Welding

Xie

Zhou

Nian

et al. 2023

J. of Materi Eng and Perform

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The arc welding with weaving has been used widely to obtain better weld quality by avoiding lack of side wall fusion and improve the weld e ciency by obtaining the wide weld bead. But the effect of weaving process parameter change on the weld is not clear. The aim of this work is to study the effect of process parameters on arc behavior and weld formation in Weaving Gas Tungsten Arc Welding(W-GTAW), those parameters include welding currents, tungsten electrode heights from the electrode tip to upper surface of workpiece, weave angles, weave speeds, and weave stop time on the left and right sides. The instantaneous arc shape and electrical signal data were collected by high-speed camera and electrical signal acquisition system respectively. Furthermore, the weld morphology was also systematically analyzed. This result shows that the bottom surface radius of the arc changed with weaving in the W-GTAW. When the weave speed increased to 0.40 × 10 -1 rad/s, the change of the radius was the least, with only 0.10 mm drift, and the difference between the arc forces in the middle and the two sides of the molten pool was smallest. Compared with the stability of each welding process, decreasing the tungsten electrode heights, weave angle and speed could signi cantly enhance the stability of welding. The forming coe cient of weld with a weave angle of 1.9° was 3.11, which might help reduce stress concentration and hot crack tendency of the weld. This shows that increasing reasonable the weave angle and speed can increase the weld penetration from another point of view. Furthermore, the W-GTAW technology shows great application potential in weld forming control by adjusting process parameters.

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“…Aluminium alloy has good ductility, corrosion resistance, and a high strength-to-weight ratio [1]. Aluminium alloys are widely used in rocket tanks and aircraft shells [2], manufacturing high-speed trains [3], and petrochemical and naval structures [4]. However, with its high thermal conductivity, aluminium has poor weldability [5].…”

Section: Introductionmentioning

confidence: 99%

Effect of Welding Current on Mechanical Properties and Microstructure of Aluminium AA1135 Alloys by Gas Tungsten Arc Welding (GTAW)

Suherman,

Abdullah,

Suprianto

et al. 2023

dinamis

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Aluminium alloys have a wide range of applications in the defence and aerospace industry, including for the manufacture of fuel tanks. The welding Current and type of filler metal significantly affect the microstructure formed and the mechanical strength of metal joints. This study aimed to determine the effect of the kind of filler metal (ER5356 filler metal) and welding current (140 amperes, 160 amperes, and 180 amperes) on the mechanical properties and microstructural of aluminium alloys AA1135 by the GTAW welding process. The results showed that the dendrite size increased with increasing welding current. Furthermore, the micro-hardness of the weld metal shows a decreasing trend with increasing welding current. The maximum tensile strength was obtained at a current power of 160 amperes, and all specimens failed at HAZ. The fracture surface of tensile test observations using SEM showed brittle fracture for Er5356 filler metal specimens, while on the fracture surface of the base metal tensile test specimens, it was observed to show ductile fracture. Welding with a current strength of 180 amperes has met the standard acceptance criteria because no cracks were found on the face bend or the root bend specimen

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First assessment on the microstructure and mechanical properties of gtaw-gmaw hybrid welding of 6061-t6 AA

Cited by 18 publications

References 28 publications

Effects of Process Parameters on the Bead Shape in the Tandem Gas Metal Arc Welding of Aluminum 5083-O Alloy

Effects of Process Parameters on the Bead Shape in the Tandem Gas Metal Arc Welding of Aluminum 5083-O Alloy

Effect of Process Parameters on Arc Behavior and Weld Formation in Weaving Gas Tungsten Arc Welding

Effect of Welding Current on Mechanical Properties and Microstructure of Aluminium AA1135 Alloys by Gas Tungsten Arc Welding (GTAW)

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