Analysis-effective induction efficiency of laser in pulse laser-GTA welding of titanium alloy

Liu, Liming; Shi, Jipeng; Xu, Xinkun

doi:10.1007/s00170-017-1515-3

Cited by 3 publications

(2 citation statements)

References 21 publications

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“…On the other hand, so far only few attempts were made by researchers regarding the FSW of Ti and its alloys. Major reason behind these fewer attempts exploring the weldability of Ti using the FSW process is that when compared with that of steel, Ti possesses larger melting point and there prevails a vital need for employing optimized values of FSW process parameters so as to control the volume of heat being generated and also to regulate the input of frictional heat during the FSW of Ti alloys [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Optimization of parameters and formulation of numerical model employing GRA–PCA and RSM approach for friction stir welded Ti–6Al–4V alloy joints

Babu S D

et al. 2024

Mater. Res. Express

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In this work, an endeavor was made to determine the impact of the tool’s shoulder diameter, pin profile, rotational and traverse speeds on the mechanical properties of the friction stir welded namely Ti–6Al–4V alloy joints. A total of 21 experiments were carried out based on the central composite design (CCD) concept of response surface methodology (RSM). A quadratic regression based numerical model was formulated to ascertain the relationship amidst the parameters of FSW process and the mechanical properties of the fabricated Ti alloy joints. Analysis of variance (ANOVA) was employed to confirm the importance of parameters and their interactive impacts. Optimized process parameter combinations were ascertained by grey relation based analysis (GRA) was coupled together with principal component analysis (PCA), a hybrid based approach. Single score of GRG based response was determined and GRG scores were ranked for all experiments. 1st rank was attained by the experiment no. 20 possessing a GRG score of 2.9989. Optimized values of 25mm shoulder diameter having a taper cylindrical pin geometry employed at a tool traverse speed of 40 mm/min, rotational speed of 1400 rpm resulted in the generation of flaw free Ti alloy joint possessing a largest tensile strength of 809.8 MPa, yield strength of 778.7 MPa and percentage of elongation of 6.9%. SEM based fractography ofTi alloy joint specimens announced that taper cylindrical pin geometry along with 25m shoulder diameter of employed tool have an inevitable part in generating frictional heat in ideal volumes and a perfect stirring action during FSW process.

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Section: Introductionmentioning

confidence: 99%

Optimization of parameters and formulation of numerical model employing GRA–PCA and RSM approach for friction stir welded Ti–6Al–4V alloy joints

Babu S D

et al. 2024

Mater. Res. Express

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“…GUI et al [11] investigated that when the DLA was small in low power laser-TIG welding, the arc would be significantly compressed, and the preheating of arc would greatly improve the laser absorption. Liu et al [12] ascertained that DLA in laser TIG hybrid welding seriously affects the stability of the welding process. By accurately adjusting DLA, the behavior of keyhole and molten pool could be controlled to obtain appropriate weld penetration.…”

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confidence: 99%

Influence of heat source arrangement on coupling characteristics of low-power pulsed laser-MAG hybrid welding

Tao

Yang

et al. 2023

Int J Adv Manuf Technol

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Low power pulsed laser-MAG hybrid welding was carried out by different heat source arrangement methods (lead mode, distance between laser spot and welding wire tip (DLA)). The coupling effect and welding characteristics of hybrid heat sources under different modes were studied by using high speed image (HSI) and real-time electrical signals. HSI observation and electronic signals showed that the lead mode and DLA significantly affect the coupling state of heat source and welding characteristics (weld morphology, process stability and droplet transfer). The influence of lead mode on weld forming was more significant than that of DLA.In laser-lead mode, when DLA = 1~2mm, the laser and arc had perfect coupling effect, good weld formation, less spatter and greater penetration. In arc-lead mode, the weld formation was poor and undercut defects were common, while the overall penetration was greater than that in laser-lead mode. In terms of welding process stability, arc-lead mode was better than laser-lead mode. The pulsed laser increased the stability of projected transition, produced more fine droplets and reduced the generation of spatter. When DLA = 1~2mm, stable droplet transfer could be realized under both modes.

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Research advances in high-energy TIG arc welding

Chang

Qiang

et al. 2019

Int J Adv Manuf Technol

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Analysis-effective induction efficiency of laser in pulse laser-GTA welding of titanium alloy

Cited by 3 publications

References 21 publications

Optimization of parameters and formulation of numerical model employing GRA–PCA and RSM approach for friction stir welded Ti–6Al–4V alloy joints

Optimization of parameters and formulation of numerical model employing GRA–PCA and RSM approach for friction stir welded Ti–6Al–4V alloy joints

Influence of heat source arrangement on coupling characteristics of low-power pulsed laser-MAG hybrid welding

Research advances in high-energy TIG arc welding

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