Gas tungsten arc welding of titanium using flux cored wire with magnesium fluoride

Bang, Kook-soo; Chirieleison, G.; Liu, S.

doi:10.1179/174329305x57509

Cited by 7 publications

(4 citation statements)

References 5 publications

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“…The presence of the activated elements (the dissociation of the flux) in welding ambient will increase the vaporisation rates of the weld metal. 12 In the present paper, magnesium alloy was the weld metal and the amount of the evaporation of magnesium will increase dramatically when flux coated wire was used. The atomic mass of Mg is much lighter than that of Ar, and the heat conductivity of the arc will increase with increasing magnesium vapour.…”

Section: Video Captures Of Arcmentioning

confidence: 98%

Magnesium alloy weld using manganese chloride coated wire

Liu¹,

Cai²,

Zhang³

2008

Science and Technology of Welding and Joining

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Magnesium alloy was welded with normal wire and activated flux coated wire. Weld bead penetration, arc voltage, arc profiles and welding arc electronic temperature were researched. Weld bead penetration, arc voltage and welding arc electronic temperature increased when activated flux coated wire was used. It is also found that the welding arc constricted in flux coated wire weld. It is believed that deep weld penetration associated with flux coated wire in this experiment is caused by arc constriction.

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Section: Video Captures Of Arcmentioning

confidence: 98%

Magnesium alloy weld using manganese chloride coated wire

Liu¹,

Cai²,

Zhang³

2008

Science and Technology of Welding and Joining

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“…These include narrow gap, flux cored filler wire, immersed arc, twin arc, hot wire, K-GTAW and ATIG. 9,[16][17][18] Active flux tungsten inert gas and K-GTAW have received significant attention in recent years due to the deeply penetrating weldpool 3,16,[19][20][21] (Fig. 2).…”

Section: Gas Tungsten Arc Welding Process Overviewmentioning

confidence: 99%

“…4) has been explained by the flux acting as an arc constrictor (e.g. Bang et al 16 and Howse and Lucas 17 ) or the flux acting to change the surface tension gradient across the weldpool (e.g. Lowke et al 25 ).…”

Section: Weldpool Mechanismsmentioning

confidence: 99%

Gas tungsten arc welding of α + β titanium alloys: A review

Short¹

2009

Materials Science and Technology

118

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Titanium alloys used in aerospace structures require joints of high integrity to meet the design requirements. Gas tungsten arc welding (GTAW), laser beam welding (LBW) and electron beam welding (EBW) are all processes capable of creating fusion welded joints. Gas tungsten arc welding offers the potential to achieve welds of equal quality to EBW or LBW at much lower capital costs; however, the application of GTAW involves gaining an understanding of the complex process characteristics. This paper reviews the process characteristics for GTAW titanium alloys and compares these characteristics with EBW and LBW titanium alloys. The characteristics of active flux tungsten inert gas welding and keyhole mode GTAW, two recent developments to GTAW, are considered, as is keyhole mode plasma arc welding. These variants are capable of greater penetration and, in some cases, faster processing speeds than conventional GTAW. Finally, the current knowledge of weld microstructural development in cast and wrought α + β titanium alloys and the mechanical performance of such welded joints are examined. Notably, conduction mode GTAWs are shown to have comparable mechanical properties with EBWs in relation to both cast and wrought base metals.

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“…GTAW can produce the same quality welds as those made by electron beam welding and laser beam welding at lower costs. 6) GTAW has become a more reliable method for titanium, especially for thin sheets. 7) Titanium has some of the best characteristics for GTAW: namely low density, good weldpool fluidity, high surface tension and low thermal conductivity.…”

Section: Introductionmentioning

confidence: 99%

Temperature Dependence of Tensile Properties and Fracture Behavior of Welded Joints of Titanium Matrix Composites in Gas Tungsten Arc Welding

et al. 2013

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The characteristics of gas tungsten arc weldments of in-situ reinforced titanium matrix composites were investigated, and the joint quality was evaluated by means of weld morphology, microstructure and tensile tests. With an increase of welding process parameters, sound welded joints were fabricated. The weld zone had a refinement microstructure and TiB w exhibited smaller sizes and dispersed distribution, forming a novel network structure in the weld. Tensile tests indicated that the weld presented excellent high temperature strengths, even superior to the base metal under the welding conditions. The welded joints displayed a slower downtrend in strength than that of base metal with an increase of temperature, and the elongation values of joints were higher than the base metal because of the refined grain microstructure and dispersed distribution of TiB w in the weld. The strengthening mechanism of high temperature properties of welded joints is ascribed to smaller sizes and network structure of TiB w in the weld. The fracture surfaces of butt joints for TMCs include the hybrid ductile of matrix and brittle fracture/ decohesion of TiB w at different temperatures.

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Gas tungsten arc welding of titanium using flux cored wire with magnesium fluoride

Cited by 7 publications

References 5 publications

Magnesium alloy weld using manganese chloride coated wire

Magnesium alloy weld using manganese chloride coated wire

Gas tungsten arc welding of α + β titanium alloys: A review

Temperature Dependence of Tensile Properties and Fracture Behavior of Welded Joints of Titanium Matrix Composites in Gas Tungsten Arc Welding

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