Laser Butt Welding of Thin Ti6Al4V Sheets: Effects of Welding Parameters

Omoniyi, Peter; Mahamood, Rasheedat M.; Arthur, Nana Kk; Pityana, Sisa; Skhosane, Samuel; Okamoto, Yasuhiro; Shinonaga, Togo; Maina, Martin Ruthandi; Jen, Tien‐Chien; Akinlabi, Esther Titilayo

doi:10.3390/jcs5090246

Cited by 11 publications

(8 citation statements)

References 25 publications

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“…3. It was observed that the tensile strength of the R sample (957 MPa) matched the values given in the literature [61,62].…”

Section: Tensile Tests and Vickers Hardnesssupporting

confidence: 80%

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Corrosion behavior of fiber laser welded Ti-6Al-4V alloy rods with different pH and temperature in 0.9 wt% NaCl medium

Yontar,

Çevik

2023

Res. Eng. Struct. Mat.

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The corrosion resistance of laser welded samples was carried out in a shaken incubator in body-simulated liquid environments and kept at pH3-5 and 25-50˚C conditions for 24 hours. It was determined that acicular α' martensite structures were formed in the fusion regions and these structures increased the hardness of the alloy by 20% compared to the base metal. The welded samples had the highest tensile strength of 144 MPa. Weight changes after the corrosion test were calculated and the highest weight loss was found to be 0.0025 g for the sample with an initial weight of 4.1394 g. TiO2 oxides and {1 0 0} and {1 1 1} chamber-shaped salt crystals were formed larger and more intensely in the fusion zones than the base metal. Dental metallic implant welding with fiber laser will have higher corrosion resistance in oral use with different temperature and pH environments compared to screw joints.

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“…3. It was observed that the tensile strength of the R sample (957 MPa) matched the values given in the literature [61,62].…”

Section: Tensile Tests and Vickers Hardnesssupporting

confidence: 80%

“…These values can be considered as standard for Ti-6Al-4V alloy. Omoniyi et al [62] joined Ti-6Al-4V sheets with 2.6-2.8 kW power values using laser welding. Vickers hardness measurements showed that the BM was 343 ± 12 HV0.5 and the weld zones were 426 ± 17 HV0.5.…”

Section: Tensile Tests and Vickers Hardnessmentioning

confidence: 99%

Corrosion behavior of fiber laser welded Ti-6Al-4V alloy rods with different pH and temperature in 0.9 wt% NaCl medium

Yontar,

Çevik

2023

Res. Eng. Struct. Mat.

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“…Similar to the FZ of AM welds, coarse columnar grains exist within the FZ of the wrought welds with an average length of 43.3 µm, as shown in Fig. 8 c. The grains appear like the needle-like α lamellar and acicular α’, resulting from the zone reaching the liquidus temperature and cooling at a rate above the critical cooing rate of 410 °C/s as explained and also observed in 36 – 38 . The length of the columnar grains is close to that of the AM welds.…”

Section: Resultssupporting

confidence: 61%

Joint integrity evaluation of laser beam welded additive manufactured Ti6Al4V sheets

Omoniyi

Mahamood

Arthur

et al. 2022

Sci Rep

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The feasibility of joining laser metal deposited Ti6Al4V sheets using laser beam welding was investigated in this article. The additive manufactured sheets were joined using a 3 kW CW YLS-2000-TR ytterbium laser system. The mechanical properties and microstructure of the welded additive manufactured parts (AM welds) were compared with those of the wrought sheets welded using the same laser process. The welds were characterized and compared in terms of bead geometry, microhardness, tensile strength, fractography, and microstructure. The differences in characteristics are majorly found in the width of the bead and tensile strength. The bead width of AM welds appear wider than the wrought welds, and the wrought welds exhibited higher tensile strength and ductility than the AM welds.

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“…Welding is a material-joining process that produces the fusion of materials by heating the material to melting temperatures [1,2]. Permanent joints are achieved by welding processes [3].…”

Section: Introductionmentioning

confidence: 99%

Prediction of Impact Strength of TIG Welded Cr-Mo Steel Using Artificial Neural Networks

Adewuyi,

Aweda,

Ogunwoye

et al. 2023

Metall Mater Eng

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Welding is a critical and energy-intensive process with significant importance in the manufacturing industry, enabling the creation of joints capable of withstanding diverse loads without failure. Accurate prediction of welding parameters' effects on the thermal cycle and strength of metals during and after welding is essential to ensure the reliability of welds. This study investigates the influence of welding parameters such as welding current, material thickness, number of weld passes, and electrode diameter on the impact strength of Cr-Mo steel bars. Pure tungsten with 2% thoriated Tungsten Inert Gas (TIG) electrodes was used to join the metal sheets autogenously. Artificial neural network (ANN) was used in creating the model that predicts the impact strength of the steel. Sample with welding parameters of 15 mm thickness, 90 A current, 3 weld passes, and Ø2.4 mm electrode size exhibited the highest impact strength. Furthermore, the analysis of variance (ANOVA) results show that the material thickness and number of weld passes contribute significantly to the impact strength of the steel. The ANN model trained by the Levenberg-Marquardt algorithm had an average training dataset root mean square error (RSME) of 4.12%. This study contributes to the reliability and performance of welded joints in various applications.

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Laser Butt Welding of Thin Ti6Al4V Sheets: Effects of Welding Parameters

Cited by 11 publications

References 25 publications

Corrosion behavior of fiber laser welded Ti-6Al-4V alloy rods with different pH and temperature in 0.9 wt% NaCl medium

Corrosion behavior of fiber laser welded Ti-6Al-4V alloy rods with different pH and temperature in 0.9 wt% NaCl medium

Joint integrity evaluation of laser beam welded additive manufactured Ti6Al4V sheets

Prediction of Impact Strength of TIG Welded Cr-Mo Steel Using Artificial Neural Networks

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