Investigations on the structure – Property relationships of electron beam welded Inconel 625 and UNS 32205

Ramkumar, K. Devendranath; Sridhar, R.; Periwal, Saurabh; Oza, Smitkumar; Saxena, Vimal; Hidad, Preyas; Arivazhagan, N.

doi:10.1016/j.matdes.2014.12.032

Cited by 61 publications

(11 citation statements)

References 14 publications

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“…The precipitates observed are Cr2Ni3, Mn3Si, NbNi3 and Cr2Ni3, Fe7NI3, Al2FeSi, NbNi3 in weld 1 and weld 3, respectively. It is from the XRD analysis that Ni was enriched in the weld zone [12,24]. The major in Inconel 625 is the weld bead, indicating intense peaks at 44.78°, 52.7°, and 7 and Ni are major constituents, and the precipitates of Cr and Ni were observed weld 1 and weld 3.…”

Section: Defects and Metallurgymentioning

confidence: 97%

“…Full penetration was observed at 120 and 180 J/mm for Inconel 825 and Inconel 625 of 5 mm-thick plates, respectively, with faster cooling rates and reduced grain growth at the fusion zone, compared to that induced by the GTAW process [9,18,19]. Finally, it is worth mentioning that process parameter optimization can also be achieved by numerical simulation [20][21][22][23][24][25][26][27][28][29] that, however, cannot disregard experimental tests to be validated.…”

Section: Introductionmentioning

confidence: 99%

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Mechanical and Metallurgical Properties of CO2 Laser Beam INCONEL 625 Welded Joints

Vemanaboina

Gundabattini

Akella³

et al. 2021

Applied Sciences

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In the frame of the circular economy, welding of Ni-based superalloys has gained increasing importance when applied, for instance, to repairing highly expensive components widely used in strategical sectors, such as the defense and aerospace industries. However, correct process parameters avoiding metallurgical defects and premature failures need to be known. To reach this goal, Inconel 625 butt-welded joints were produced by CO2 laser beam welding and different combinations of process parameters. The experimental investigation was carried out with three parameters in two levels with an L4 orthogonal array. Laser power, welding speed, and shielding gas flow rate were varied, and the results were reported in terms of mechanical properties, such as microhardness, tensile strength, distortion, residual stress, and weld bead geometry, and metallurgy. At a lower welding speed of 1 m/min, the full penetration was observed for 3.0 kW and 3.3 kW laser powers. However, sound welds (porosity-free) were produced with a laser power of 3.3 kW. Overall, the obtained full-penetration specimens showed a tensile strength comparable with that of the parent material with residual stresses and distortions increasing with the increase in heat input.

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Section: Defects and Metallurgymentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Mechanical and Metallurgical Properties of CO2 Laser Beam INCONEL 625 Welded Joints

Vemanaboina

Gundabattini

Akella³

et al. 2021

Applied Sciences

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“…The results showed that a harmful phase of laves)intermetallic phases(was formed in the weld metal, and the resulting failure was due to the segregation of Nb. Devendranath Ramkumar et al [ 19 ] also found that, in the non-homogeneous joints of DSS 2205 and Inconel 625, with the separation of Mo and Nb in the weld zone, due to the existence of secondary phases, the toughness and tensile strength of the weld joints were greatly reduced [ 20 ]. In the laser beam process, the higher welding speed at the high laser power generally ends in heating and therefore, fast cooling, leading to the reduction of elemental separation and the refinement of the microstructure [ 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

Investigation the effect of dissimilar laser welding parameters on temperature field, mechanical properties and fusion zone microstructure of inconel 600 and duplex 2205 stainless steel via response surface methodology

Soleimani,

Akbari,

Karimipour

et al. 2024

Heliyon

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“…The equal phase combinations in DSS 2205 facilitate excellent mechanical properties and good corrosion resistance. It is commonly used in fabrication of heat exchangers, offshore structural components, water treatment plant devices [1,2]. Despite being readily weldable, heat input is the key factor in welding of DSS 2205 to achieve desired microstructure and avoid formation of deleterious phases.…”

Section: Introductionmentioning

confidence: 99%

Monitoring of thermo-cycles in fibre laser welding of duplex stainless steel 2205 sheets and its correlation with microstructures and mechanical properties

Ahmad,

Singh,

Tripathi

et al. 2023

Mater. Res. Express

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The study reports the influence of change in the heat supplied (43 J/mm to 18.5 J/mm) on the microstructures as well as mechanical properties of weld joints obtained by welding of Duplex stainless steel 2205 using fibre laser. In-process thermal monitoring of the molten weld pool was carried out using IR pyrometer. Cooling rates (i.e. solidification and solid) were calculated from the thermo-profiles of weld pool, and it increases with the decrease in heat input. From the optical images, it is observed that columnar grains originated from the fusion zone walls and merged at the center. Since, solidification front velocity is comparable on both sides’ leads to a central edge. Ferrite phase content observed in fusion zone microstructure, increases with the increase in solid cooling rate. The result suggests that the joints fabricated at lowest heat input displayed highest tensile strength. The maximum tensile strength been reported to be 872.5 ± 10.8 MPa, and failure occurred at parent metal. Tensile strength of weld joints of DSS 2205 was found to have improved with increasing cooling rate. Higher cooling rate results in the formation of fine dendritic grains as well as higher ferrite content in the weld metal.

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Investigations on the structure – Property relationships of electron beam welded Inconel 625 and UNS 32205

Cited by 61 publications

References 14 publications

Mechanical and Metallurgical Properties of CO2 Laser Beam INCONEL 625 Welded Joints

Mechanical and Metallurgical Properties of CO2 Laser Beam INCONEL 625 Welded Joints

Investigation the effect of dissimilar laser welding parameters on temperature field, mechanical properties and fusion zone microstructure of inconel 600 and duplex 2205 stainless steel via response surface methodology

Monitoring of thermo-cycles in fibre laser welding of duplex stainless steel 2205 sheets and its correlation with microstructures and mechanical properties

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