Effect of fast-frequency pulsed waveforms on the microstructure and mechanical properties of Ti–6Al–4V alloy welded by FFP-TIG

Wu, Jianwen; Wang, Zhenmin; Lin, Sanbao; Xie, Zhengchao; Xu, Mengjia; Tian, Jiyu; Guo, Chunfu

doi:10.1016/j.jmrt.2022.07.126

Cited by 19 publications

(4 citation statements)

References 21 publications

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“…A novel fast frequency double pulse TIG (FFDP TIG) welding is proposed. The FFDP TIG waveform is formed by superposition of fast frequency pulse current and low frequency pulse current, it can shrink the arc and promote the stirring of molten pool [20]. FFDP TIG welding process was applied to welding Ti-6Al-4V titanium alloy.…”

Section: Introductionmentioning

confidence: 99%

Study on arc shape, weldment microstructure, and mechanical properties of Ti-6Al-4V welded by FFDP TIG waveform

Kuang,

Jia,

Zhu

et al. 2024

Int J Adv Manuf Technol

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mainly engaged in the research of new SiC-based welding power supplies, arc welding additive manufacturing. Jianjun Jia is a master candidate in mechanical engineering specialty at the team of Intelligent Welding headed by Prof. Zhenmin Wang. Zeguang Zhu is a master candidate in mechanical engineering specialty at the team of Intelligent Welding headed by Prof. Zhenmin Wang. Zixiao Gui is a master candidate in mechanical engineering specialty at the team of Intelligent Welding headed by Prof. Zhenmin Wang.

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Section: Introductionmentioning

confidence: 99%

Study on arc shape, weldment microstructure, and mechanical properties of Ti-6Al-4V welded by FFDP TIG waveform

Kuang,

Jia,

Zhu

et al. 2024

Int J Adv Manuf Technol

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“…So this research concentrates to focus AA5083-H111 with constant weight fraction of nano-SiO 2 -synthesized samples which were composed by the A-TIG welding. Wu et al [20] investigated the TIG welded on the titanium alloy and analyzed the mechanical properties by various influence of frequency. The mechanical properties were improved by increasing the frequencies.…”

Section: Introductionmentioning

confidence: 99%

Analytical and Neural Network Analysis on Flux-Coated Aluminium Alloy by Activated TIG Welding with Synthesized Nanocomposites

Raja¹,

Kumar

Kumari

et al. 2023

Journal of Nanomaterials

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This research focused to synthesize the material by the tungsten inert gas (TIG) welding process with support of appropriate flux coating material. Therefore the required amount of flux coating material was utilized to enhance the mechanical properties of the specified localized welded regions. Hence, this study concentrated to select the nano-SiO2 flux particles that were employed for TIG process. This activated TIG welding composes the flux-coated welding on the base metal of AA5083-H111, as this material was highly reactive with SiO2 by the presence of magnesium precipitates and well synthesized after the welding. The post- and preheat treatment process was achieved before and after welding. The selection of activated TIG process parameters composed of strengthened weld specimens along with constant parameters like electrode tip angle and flow rate, respectively. Initially, the process parameters were designed by the statistical analysis of Box Behnken method with support of regression formulation to determine the optimal solution. The maximum tensile strength was attained at the welding process parameters of welding speed (100 mm/min), voltage (13 V), and current (125 amps). The higher hardness was achieved at the process parameters of welding speed (80 mm/min), voltage (12 V), and current (125 amps), respectively. Finally, the neural network approach was utilized to verify the predicted responses of tensile and microhardness properties. The interaction plots, mean plots, and 3D scatter plots were influenced to enhance the process parameters. In this research, mechanical properties were enhanced by the flux-coated SiO2 and the analytical method also advances the optimal parameters.

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“…In recent years, researchers have discovered that introducing a fast-frequency pulsed current (≥20 kHz) in TIG welding would contract the arc and stir the molten metal by the electromagnetic effect to refine grains, avoid defect formation, and improve the mechanical properties of the weld beam [6]. This welding method is called fast-frequency pulsed tungsten inert gas (FFP-TIG) welding [7,8]. Due to the radial electromagnetic contraction force generated by FFP current, the arc plasma is contracted in the radial direction and the arc pressure is raised, causing the welding heat to be effectively transferred to a deeper weld, and thus the evolution of the microstructure and mechanical properties of the welding zone.…”

Section: Introductionmentioning

confidence: 99%

Effect of Fast-Frequency Pulsed Current Parameters on FFP-TIG arc Behavior and Its Implications for Inconel 718 Welding

Wang

Zhu

et al. 2023

Metals

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Tungsten inert gas (TIG) is currently one of the most widely applied welding technologies. However, the arc energy divergence and high heat input of conventional TIG can lead to welding defects in heat-input-sensitive alloys (such as Inconel 718). Introducing a fast-frequency pulsed current (≥20 kHz) in TIG creates a welding process named fast-frequency pulsed tungsten inert gas (FFP-TIG). The arc behavior of FFP-TIG has advantages over conventional TIG in terms of arc contraction, arc pressure, and energy density. With an increase in the FFP current amplitude or frequency, the arc diameter and arc area are reduced, the arc pressure at the center of the arc is increased, and the arc energy divergence and arc temperature are reduced. The FFP-TIG weld method was adapted for Inconel 718 based on FFP-TIG arc behavior. This study provides fresh insight into the development and application of FFP-TIG arc physics research and industrial applications.

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Effect of fast-frequency pulsed waveforms on the microstructure and mechanical properties of Ti–6Al–4V alloy welded by FFP-TIG

Cited by 19 publications

References 21 publications

Study on arc shape, weldment microstructure, and mechanical properties of Ti-6Al-4V welded by FFDP TIG waveform

Study on arc shape, weldment microstructure, and mechanical properties of Ti-6Al-4V welded by FFDP TIG waveform

Analytical and Neural Network Analysis on Flux-Coated Aluminium Alloy by Activated TIG Welding with Synthesized Nanocomposites

Effect of Fast-Frequency Pulsed Current Parameters on FFP-TIG arc Behavior and Its Implications for Inconel 718 Welding

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