Structure-property evaluation of single pass Laser-arc hybrid welding of re-sulphurized martensitic stainless steel

Dharmik, Koya; Noronha, Brantin; Mugundan, K. Giri; Bhargav, Sai; Prabhakar, K. V. Phani

doi:10.1016/j.jmatprotec.2019.04.016

Cited by 9 publications

(1 citation statement)

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“…Among them, the tA15 alloy has a high Al equivalent, belonging to ti-Al-Zr-Mo-V series [4,5]. inconel 718 nickel-based alloy is a kind of precipitation-hardening super alloy, which is also wildly used in aerospace because of its superior mechanical properties, outstanding corrosion resistance and high temperature oxidation resistance, high strength and thermal stability in the high temperature environment of 700~900°C [6,7]. the combination of the titanium alloy and the nickel-based alloy forming as the bimetallic structure can not only reduce the structural weight, but also fully uses their individual properties in the field of aerospace [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Archives of Metallurgy and Materials

2022

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Laser WeLding of Ta15 TiTanium aLLoy and inconeL 718 dissimiLar meTaLs this paper studied the effect of laser welding technology on dissimilar metal welding joints of tA15 titanium alloy and inconel 718 nickel-based alloy. the research results indicate that the laser welding of tA15 titanium alloy and inconel 718 nickel-based alloy directly was difficult to form well, which due to the intermetallic compounds caused the joint brittle. When the pure Cu foil was used as the filling layer, the quality of the welding joints can be improved effectively. the experimental results also indicate that there were brittle intermetallic-compounds in the laser welding seam, and the laser power had an important influence on the performance and mechanical properties of the dissimilar metal joint. the maximum average tensile strength of the welding joint of 2300 W was increased to 252.32 MPa. Scanning electron microscope(SeM) results show that the fracture morphology was river pattern, a typical morphological of cleavage fracture, and the mode was brittle fracture.

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