Ti–6Al–4V TIG Weld Analysis Using FEM Simulation and Experimental Characterization

Reda, Reham; Magdy, Mohamed; Rady, Mohamed

doi:10.1007/s40997-019-00287-y

Cited by 26 publications

(25 citation statements)

References 10 publications

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“…This reveals that the martensite percentage is higher in Ti-6Al-4V weld zone and HAZ but low content of alpha compared to Ti-3Al-2.5V. It is reported that there could be an increase in martensite due to an increase in heat input for titanium alloys 10) . The high heat capacity of Ti-6Al-4V, which causes a high bead width for Ti-6Al-4V, could play a role in increasing the martensite percentage in the Ti-6Al-4V weld zone compared to the Ti-3Al-2.5V.…”

Section: Microstructure Of Titanium Alloys At Optimum Conditionsmentioning

confidence: 79%

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Determination of Optimal Weld Parameter for Joining Titanium Alloys by Gas Tungsten Arc Welding using Taguchi Method

Huda

Kim

et al. 2021

Journal of Welding and Joining

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The optimal parameters for joining two different titanium alloys were determined by the Taguchi method and applied in similar and dissimilar joining of conventional Ti-6Al-4V and newly developed Ti-3Al-2.5V alloys. The microstructures of the two alloys and their mechanical properties were comparatively evaluated at the optimal parameters. The Ti-6Al-4V alloy showed a larger back bead width than that of Ti-3Al-2.5V under similar heat input, because of its lower thermal conductivity and higher specific heat capacity. The welded zone of Ti-3Al-2.5V contained a retained beta phase, which was absent in that of Ti-6Al-4V. This indicates that the transformation of the Ti-3Al-2.5V weld metal starts above the martensite temperature, while it starts below the martensite temperature for Ti-6Al-4V. The failure of the welded specimen occurred in the base metal for both the titanium alloys, which indicates the superior weld quality. However, the welded Ti-6Al-4V showed superior tensile strength to that of the Ti-3Al-2.5V weld under optimal conditions, owing the high beta phase fraction in its base metal. Meanwhile, it showed inferior ductility to that of Ti-3Al-2.5V because of its coarser beta phase.

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Section: Microstructure Of Titanium Alloys At Optimum Conditionsmentioning

confidence: 79%

“…It is reported that the martensite percentage in the weld zone could also increase the hardness in GTA welding of titanium alloys 10) . The high percentage of martensite in the weld zone of Ti-6Al-4V could also have an impact on high hardness compared to Ti-3Al-2.5V.…”

Section: Hardnessmentioning

confidence: 99%

Determination of Optimal Weld Parameter for Joining Titanium Alloys by Gas Tungsten Arc Welding using Taguchi Method

Huda

Kim

et al. 2021

Journal of Welding and Joining

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“…Among quadratic terms and interactions, none are effective. Equation (12) shows the regression model with coded values for the weld bead width considering significant parameters. The ANOVA, table of weld bead width shows that the regression model output fits the weld bead width with a good estimation.…”

Section: Weld Bead Widthmentioning

confidence: 99%

“…They validated their numerical model with experimental approaches through measuring temperature, weld bead dimensions, and residual stresses. They represented the optimum range for welding current [12]. In 2020, Shiva naga et al estimated welding strength through different input parameters such as current, voltage, and weld speed.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Analysis on TIG Arc Welding of Stainless Steel Using RSM Approach

Karganroudi

Moradi

Attar

et al. 2021

Metals

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This study involves the validating of thermal analysis during TIG Arc welding of 1.4418 steel using finite element analyses (FEA) with experimental approaches. 3D heat transfer simulation of 1.4418 stainless steel TIG arc welding is implemented using ABAQUS software (6.14, ABAQUS Inc., Johnston, RI, USA), based on non-uniform Goldak’s Gaussian heat flux distribution, using additional DFLUX subroutine written in the FORTRAN (Formula Translation). The influences of the arc current and welding speed on the heat flux density, weld bead geometry, and temperature distribution at the transverse direction are analyzed by response surface methodology (RSM). Validating numerical simulation with experimental dimensions of weld bead geometry consists of width and depth of penetration with an average of 10% deviation has been performed. Results reveal that the suggested numerical model would be appropriate for the TIG arc welding process. According to the results, as the welding speed increases, the residence time of arc shortens correspondingly, bead width and depth of penetration decrease subsequently, whilst simultaneously, the current has the reverse effect. Finally, multi-objective optimization of the process is applied by Derringer’s desirability technique to achieve the proper weld. The optimum condition is obtained with 2.7 mm/s scanning speed and 120 A current to achieve full penetration weld with minimum fusion zone (FZ) and heat-affected zone (HAZ) width.

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“…Welding is one of the most economical techniques in joining metals permanently and a joining technique that is enormously been improved on in industries, using lasers and robots to carry out what the human capability cannot accomplish [19,20]. Friction stir welding (FSW), laser beam welding (LBW), tungsten inert gas (TIG), electron beam welding (EBW) and metal inert gas (MIG) are common welding techniques used in joining of titanium and its alloys [21][22][23][24][25][26]. In the past, manual metal arc welding (MMAW) is majorly used in the welding of metals but has a major drawback of oxidation and vaporization of the melt pool, due to strong heat input [27].…”

Section: Introductionmentioning

confidence: 99%

An Overview of TIG Welding of Ti6Al4V: Recent Developments

Omoniyi¹,

Mahamood²,

Jen³

et al. 2021

RCMA

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Titanium is a commonly used non-ferrous metal in the aerospace, chemical and nuclear industry, due to its unique structural and mechanical properties. Selection of suitable welding techniques and understanding of the effects of parameters corroboration to achieve a quality joint necessitated this article. The article presents recent researches in process parameters optimization done on Tungsten Inert Gas (TIG) welding of Ti6Al4V alloy. Furthermore, it discusses the effects of the parameters used in TIG welding technique on the weld quality, mechanical properties, and microstructure of joined plates. Pulsed TIG welding was found to be the most suitable type of welding for Ti6Al4V alloys based on its ease of use and reduced heat input compared to the conventional TIG welding.

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Ti–6Al–4V TIG Weld Analysis Using FEM Simulation and Experimental Characterization

Cited by 26 publications

References 10 publications

Determination of Optimal Weld Parameter for Joining Titanium Alloys by Gas Tungsten Arc Welding using Taguchi Method

Determination of Optimal Weld Parameter for Joining Titanium Alloys by Gas Tungsten Arc Welding using Taguchi Method

Experimental and Numerical Analysis on TIG Arc Welding of Stainless Steel Using RSM Approach

An Overview of TIG Welding of Ti6Al4V: Recent Developments

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