Microstructure and mechanical properties of specimens produced using the wire-arc additive manufacturing process

Astarita, Antonello; Campatelli, Gianni; Corigliano, Pasqualino; Montevecchi, Filippo; Scherillo, Fabio; Venturini, Giuseppe

doi:10.1177/0954406219883324

Cited by 10 publications

(6 citation statements)

References 18 publications

(31 reference statements)

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“…In addition, when dealing with complex and labor-intensive products, one future perspective of the Industry 4.0 revolution related to welding could be its substitution with advancing autonomous technologies such as additive manufacturing (AM) methods [163,164]. Within this context, the wire arc additive manufacturing (WAAM) technique has shown some potential application in shipbuilding and the marine industry for the production of large-scale metal components, particularly for complicated double-curved parts.…”

Section: Future Developments Of Welded Joints In Marine Structuresmentioning

confidence: 99%

Review of Fatigue Assessment Approaches for Welded Marine Joints and Structures

Corigliano

Crupi²

2022

Metals

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Welded joints are widely used in many sectors and represent the main joining technique also in the marine industry. The welded joints are sites of high stress concentrations and are subject to severe conditions for the marine environment. The design of marine welded joints has to consider the effects from wave loads, ship motions and loading/unloading operations and corrosion effects. The aim of this scientific work is to discuss about the state of the art of the standards and the approaches for predicting the fatigue life of welded joints used for the marine industry. Several approaches are examined in order to provide an overview and highlight the advantages and limitations of each method. Furthermore, recent advances in welding of dissimilar metals and autonomous welding are considered.

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Section: Future Developments Of Welded Joints In Marine Structuresmentioning

confidence: 99%

Review of Fatigue Assessment Approaches for Welded Marine Joints and Structures

Corigliano

Crupi²

2022

Metals

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“…Shassere et al [17] developed a WAAM correction-based approach to improve bead geometrical conformity using the Surface Tension Transfer module depositing AWS ER70S-6 steel wire. Mechanical properties of AWS ER70S-6 steel wire deposited by WAAM were evaluated by Astarita et al [18]. The effect of molten pool size on WAAM properties using Ti-6Al-4 V was studied by Wu et al [19], finding that manufacturing parameters influence the cooling rate and thermal gradient and can control the equiaxial grain morphology formation.…”

Section: Introductionmentioning

confidence: 99%

Effects of different WAAM current deposition modes on the mechanical properties of AISI H13 tool steel

Hackenhaar

Mazzaferro

et al. 2022

Weld World

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In this work, AISI H13 tool steel build-ups were produced through wire arc additive manufacturing (WAAM). The cold metal transfer (CMT), low spatter control (LSC) and pulsed synergic (PS) current deposition modes were compared. Similar deposition strategy was employed in order to attempt to evaluate the influence of energy input on geometrical and mechanical properties of the deposits. To evaluate the mechanical properties of the deposits, hardness and tensile tests were carried out. Microstructures were analysed in optical microscope. As a result of the intrinsic characteristics of each current waveform and adjustments of the heat source used to perform the deposits, the heat input value was similar for CMT and PS mode and lower for the LSC mode. The CMT deposit was the tallest and widest. Temperatures were higher using the PS deposition mode. The hardness values for all deposits were higher than the usual ones for this tool steel. The microstructure was composed by hard phases, and the precipitates at grain boundaries were responsible for the brittle fracture observed in tensile specimens.

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“…Astarita et al used digital image technology to detect the displacement and strain field, and after mechanical test, the calculated mechanical properties of the sample are consistent with the reference values of the materials. 21 Wang et al milled the samples after additive manufacturing to improve the surface quality. 22 The above research mainly focuses on the online monitoring method of molten pool morphology in welding process, so there are few reports on the dynamic response characteristics and size prediction of process parameters and deposition morphology in the process.…”

Section: Introductionmentioning

confidence: 99%

Detection and control of layer width in fused plus wire arc additive manufacturing

Wang

Luo

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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Fused plus wire arc additive manufacturing is a low cost and high efficiency manufacturing technology for large scale metal parts. Aiming at the difficulty and low accuracy of component size information acquisition under strong arc light, this paper designs a laser bandpass composite filter system based on the intensity of the spectral characteristics. The component size features are extracted by image processing algorithms such as edge detection, threshold division, and line fitting. Through the adaptive control of the forming speed, the deposition width deviation is automatically corrected. The results show that under strong arc light, the feature size accuracy monitoring reaches 91.79%, and the clear image of deposition layer can be obtained effectively. This method can realize the effective forming with the deposition width of 5.5–10 mm and can accurately change the deposition layer width on demand. The dynamic control value error of the deposition feature size is less than 0.4 mm, that is, the control system can effectively ensure the component surface accuracy.

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Microstructure and mechanical properties of specimens produced using the wire-arc additive manufacturing process

Cited by 10 publications

References 18 publications

Review of Fatigue Assessment Approaches for Welded Marine Joints and Structures

Review of Fatigue Assessment Approaches for Welded Marine Joints and Structures

Effects of different WAAM current deposition modes on the mechanical properties of AISI H13 tool steel

Detection and control of layer width in fused plus wire arc additive manufacturing

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