Additive manufacturing of duplex stainless steels: assessment of deposition processes, microstructure, and properties

Meura, Vitor H.; Oliveira, Ana Sofia Clímaco Monteiro de

doi:10.1007/s00170-023-11947-4

Cited by 5 publications

(1 citation statement)

References 84 publications

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“…Although AM of DSS is gaining increasing interest in industry, there is still a significant lack of quantitative knowledge about phase formation, tempering kinetics and the resulting functional properties of additively manufactured DSS (Zhang et al, 2022;Pacheco and de Oliveira, 2023). The aim of this study is to investigate the process-material-property relationships from AM of DSS 1.4462 using PBF-LB/M and DED-LB/M.…”

Section: Laser-directed Energy Deposition Of Duplex Stainless Steelsmentioning

confidence: 99%

Additive manufacturing of duplex stainless steel by DED-LB/M and PBF-LB/M – process-material-property relationships

Maier,

Rühr,

Tangermann-Gerk

et al. 2024

RPJ

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Purpose Additive manufacturing (AM) of duplex stainless steels (DSS) is still challenging in terms of simultaneously generating structures with high build quality and adequate functional properties. This study aims to investigate comprehensive process-material-property relationships resulting from both laser-directed energy deposition (DED-LB/M) and laser powder bed fusion (PBF-LB/M) of DSS 1.4462 in as-built (AB) and subsequent heat-treated (HT) states. Design/methodology/approach Cuboid specimens made of DSS 1.4462 were generated using both AM processes. Porosity and microstructure analyses, magnetic-inductive ferrite and Vickers hardness measurements, tensile and Charpy impacts tests, fracture analysis, critical pitting corrosion temperature measurements and Huey tests were performed on specimens in the AB and HT states. Findings Correlations between the microstructural aspects and the resulting functional properties (mechanical properties and corrosion resistance) were demonstrated and compared. The mechanical properties of DED-LB/M specimens in both material conditions fulfilled the alloy specifications of 1.4462. Owing to the low ductility and toughness of PBF-LB/M specimens in the AB state, a post-process heat treatment was required to exceed the minimum alloy specification limits. Furthermore, the homogenization heat treatment significantly improved the corrosion resistance of DED- and PBF-processed 1.4462. Originality/value This study fulfills the need to investigate the complex relationships between process characteristics and the resulting material properties of additively manufactured DSS.

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Section: Laser-directed Energy Deposition Of Duplex Stainless Steelsmentioning

confidence: 99%

Additive manufacturing of duplex stainless steel by DED-LB/M and PBF-LB/M – process-material-property relationships

Maier,

Rühr,

Tangermann-Gerk

et al. 2024

RPJ

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Influence of Welding Processes on the Microstructure and Mechanical Properties of Duplex Stainless Steel Parts Fabricated by Wire Arc Additive Manufacturing

Bellamkonda,

Dwivedy,

Sudersanan

et al. 2024

Met. Mater. Int.

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Surface roughness evolution of 1Cr12Ni3MoVN alloy prepared by additive/subtractive hybrid manufacturing

Wang,

Guo,

Shi

et al. 2025

Optics & Laser Technology

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Additive manufacturing of duplex stainless steels: assessment of deposition processes, microstructure, and properties

Cited by 5 publications

References 84 publications

Additive manufacturing of duplex stainless steel by DED-LB/M and PBF-LB/M – process-material-property relationships

Additive manufacturing of duplex stainless steel by DED-LB/M and PBF-LB/M – process-material-property relationships

Influence of Welding Processes on the Microstructure and Mechanical Properties of Duplex Stainless Steel Parts Fabricated by Wire Arc Additive Manufacturing

Surface roughness evolution of 1Cr12Ni3MoVN alloy prepared by additive/subtractive hybrid manufacturing

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