Impression creep behaviour of different zones of pulsed gas tungsten arc welded Ti-6Al-4V alloy

Kumar, Adarsh; Kumar, N.; Mahto, Mithlesh Kumar; Yadav, Surya Deo; Vashista, Meghanshu; Yusufzai, Mohd Zaheer Khan

doi:10.1016/j.mtcomm.2023.106722

Cited by 3 publications

(1 citation statement)

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“…Titanium alloys are extensively utilized in aerospace, the nuclear industry, marine engineering, and other sectors owing to their high specific strength, specific stiffness, excellent fatigue, and corrosion resistance [1][2][3]. The employment of thick plate titanium alloy structures has become increasingly prevalent with the widespread use of large welded components in these fields, making welding quality a critical factor in component performance [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

A Laser-Induced TIG Arc Narrow-Gap Welding Technique for TC4 Titanium Alloy Thick Plates Based on the Spatial Position Control of Laser, Arc and Filler Wire

Song,

Xu,

Lang

et al. 2024

Metals

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In this paper, a novel laser-induced TIG arc narrow-gap welding technology is proposed for thick plates of TC4 titanium alloy. The feasibility of achieving high-performance welding joints is investigated by adjusting the spatial deviation position of the laser, arc, and filler wire. The results exhibited remarkable capabilities. By augmenting the laser-arc malposition, a stable deflection of the arc can be achieved, resulting in enhanced heat input to the sidewall adjacent to the laser side and improved fusion capability. Moreover, an inclined weld can be obtained through increased malposition between the filler wire and arc, which helps to improve interlayer fusion and suppress porosity defects. This method, involving alternating bilateral offsets between passes, successfully achieved narrow-gap welding of 24 mm-thick TC4 titanium alloy with an average tensile strength of 880.68 MPa (equivalent to 95.05% of base material strength). Therefore, this technology exhibits promising potential as an automated welding technique for achieving high-quality narrow-gap welding in titanium alloys.

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