Laser Welding of Dissimilar Metals with Large Thickness Ratio

Anandkumar, V.; Venkatesan, E.; Raj, Baldev; Karthikeyan, C.; Babu, R. S.

doi:10.22486/iwj.v29i2.182647

Cited by 2 publications

(1 citation statement)

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“…These excellent mechanical properties of Inconel 625 mainly depend upon the solid-solution hardening effect of the refractory metals, such as niobium and molybdenum in the nickel-chromium matrix [4][5]. Precipitation hardening in this alloy is mainly derived from the precipitation of fine metastable phase γ″-Ni 3 Nb after annealing over a long period at 550-850 °C [6]. Moreover, various carbides including MC, M 6 C and M 23 C 6 can also precipitate during aging upon the time and temperature [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Process Parameters on Pulsed Nd:YAG Laser Welding of Inconel 625

Ramezani

Mousavi

Ebrahimzadeh

2013

AMR

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The bead on plate welding specimens with the 1mm thickness was fabricated by Nd:YAG pulsed laser SW-1 . The effects of laser process parameters on the weld dimensions, metallurgical and mechanical properties of weld metal were investigated. The results showed that both weld depth and weld width increase with voltage. Unlike base metal that has coaxial grain structure, weld metal is composed of a dendritic structure. Grain growth in the heat affected zone did not occur. However, ultrafine precipitations were deposited at the HAZ which their size was approximately between 500 nm to microns. All tensile specimens failed in the fusion zone.

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Section: Introductionmentioning

confidence: 99%

The Effect of Process Parameters on Pulsed Nd:YAG Laser Welding of Inconel 625

Ramezani

Mousavi

Ebrahimzadeh

2013

AMR

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Using the RSM method of improving process parameters of welding AISI 316 and nickel 201 using CO2 laser

G.¹,

Velmurugan²,

Kannan

2022

Matéria (Rio J.)

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The dissimilar butt welding of nickel 201 and AISI 316 was studied by utilising a 4 kW CO 2 laser with the help of Response Surface Methodology (RSM). The effects of laser power are 2580-3420 W; welding speed 450-1150 mm/s; focal position -1 to 0 mm; beam angle 84-96 degrees; and beam offset 0-0.2 mm on weld geometry, i.e., depth of penetration, bead width, and the Fusion Zone Area (FZ). The required weld profile responses for dissimilar butt welding were modeled mathematically. The constructed models were tested using the sequential F-test, lack of fit test, and analysis of variance (ANOVA). Mathematical models are reflected in the output answers within the parameters of the input process. This laser welding process with an optimal condition zone was discovered using a numeric optimization technique. It aids in the optimization of this process's regulated responses by allowing for more effective parameter combinations. It is clear from the tensile test results that the expected weld strength has been achieved. There is some delta ferrite found in the interdendritic zone in the microstructure and the solidification process reveals columnar grains.

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Laser Welding of Dissimilar Metals with Large Thickness Ratio

Cited by 2 publications

References 0 publications

The Effect of Process Parameters on Pulsed Nd:YAG Laser Welding of Inconel 625

The Effect of Process Parameters on Pulsed Nd:YAG Laser Welding of Inconel 625

Using the RSM method of improving process parameters of welding AISI 316 and nickel 201 using CO2 laser

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