Improvement of pitting corrosion resistance of wire arc additive manufactured duplex stainless steel through post-manufacturing heat-treatment

Zhang, Yiqi; Cheng, Fangjie; Wu, Shaojie

doi:10.1016/j.matchar.2020.110743

Cited by 41 publications

(31 citation statements)

References 26 publications

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“…Therefore, the E R and E bd potentials were confirmed as statistically equal in both conditions. However, the BM condition presented more noble values for the E Corr potential when compared to the BM-WM, which suggests the BM greater resistance to generalized corrosion 43 . In addition, the passivation current density lower value (i pass ) in the BM suggests that the passive layer formed on them is more protective than that formed on the welded specimens.…”

Section: Cyclic Polarization Tests (Cp)mentioning

confidence: 87%

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Pitting and Crevice Corrosion Behavior of the Duplex Stainless Steel UNS S32205 Welded by Using the GTAW Process

et al. 2022

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This study investigated the pitting and crevice corrosion behavior of the gas tungsten arc welding (GTAW) process in the UNS S32205 according to industrial parameters. Results revealed that the welding process presented a weld metal chemical composition similar to the base metal and an adequate balance of the austenite and ferrite phases. No relevant variation in the hardness was observed and XRD spectra did not identify the presence of deleterious phases in the weld bead. Cyclic polarization tests revealed similarities between welded and base metal samples (20±2°C, NaCl 3.5% wt.). When comparing the behavior obtained in the crevice, and pitting tests, a decrease in the corrosion resistance was observed in the presence of a crevice former. The SEM-EDS proved that the attack occurred mainly in secondary austenites. Profilometry measurements revealed that the crevice corrosion in the weld region was deeper than in the base metal. However, considering the welded samples as a unit, making no difference between regions: weld metal, HAZ, and base metal, the average crevice corrosion depth was comparable to that of the base metal samples. Finally, it was concluded that the welding process used for the UNS S32205 steel did not harm its corrosion resistance.

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Section: Cyclic Polarization Tests (Cp)mentioning

confidence: 87%

“…Figure 4c corresponds to the weld metal region, where different austenite morphologies are seen: grain boundary austenite (GBA), Widmanstätten austenite (WA), and intragranular austenite (IGA). These are morphologies characteristic of the solidification process during cooling 14,40,43 .…”

Section: Phase Quantificationmentioning

confidence: 99%

Pitting and Crevice Corrosion Behavior of the Duplex Stainless Steel UNS S32205 Welded by Using the GTAW Process

et al. 2022

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“…(Fe, Mn)23(C, B)6 borocarbide was detected as the primary phase in [(10-50)Fe2B-(10-50)"Fe2C"-40"Fe2Mn"]-[ (20)(21)(22)(23)(24)(25)(26)(27)(28)(29)(30)Fe2B-(20-50)"Fe2C"-(20-60)"Fe2Mn"] alloys at an iron concentration of 66.6 at.%, the same as the results observed for [ (30)(31)(32)(33)(34)(35)(36)(37)(38)(39)(40)"Fe3B"-(20-30)Fe3C-(40-50)"Fe3Mn"]-[10"Fe3B"-2Fe3C-80"Fe3Mn"] alloys at iron concentrations of 75 at.%. The relation here is clear: when iron content reduces, the boron and manganese content in (Fe, Mn)23(C, B)6 increases, and carbon content decreases (Figure 2a,b).…”

Section: Discussionmentioning

confidence: 99%

“…As the built material grows, this heat treatment effect becomes dissimilar in different layers; the top layer is fast-cooled, whereas the sublayers are tempered several times. The wear resistance of AMed H13 tool steels in [23] was found to be only one third that of conventionally manufactured counterparts.…”

Section: Introductionmentioning

confidence: 92%

“…The 19 samples of this pseudo-ternary equilibrium system were then examined. Three constituents were determined: cementite, (Fe, Mn) 23 The lattice parameters of this cementite-like structure corresponded to Fe 3 C. Samples ##1-3, 5, and 7 contained the Fe 3 C phase with increased lattice parameters. This phase was identified as borocarbide Fe 3 (C, B).…”

Section: Study On the Isothermal Section Of The "Fe3b"-fe3c-"fe3mn" P...mentioning

confidence: 99%

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Phase Equilibrium and Microstructure Examinations of Eutectic Fe-C-Mn-B Alloys

Pashechko

Тіsov

2022

Materials

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In this study, we analyzed the quaternary Fe-C-Mn-B system to create new eutectic cast alloys for coating deposition and additive manufacturing. Experimental samples were fabricated via the wire arc manufacturing method with argon shielding using Kemppi Pro 5200 Evolution equipment. Annealing was performed in a vacuum electric furnace at 1273 K for 350 h. For phase analyses, Jeol Superprobe 733 equipment was used. Metallographic and differential thermal analyses were used to reveal the eutectic structure of the samples. Examinations of the quaternary Fe-C-Mn-B system demonstrated that several eutectic alloys existed in the system. Four isothermal pseudo-ternary sections of the Fe-C-Mn-B system were studied: “Fe3B”-Fe3C-“Fe3Mn”; Fe2B-“Fe2C”-“Fe2Mn”; “Fe3B”-Fe3C-“Fe1.2Mn”; “Fe23B6”-“Fe23C6”-“Fe23Mn”. Broad eutectic concentrations enabled us to overcome parameter fluctuations during additive manufacturing. In each isothermal section, two dissimilar phase regions were determined: one with a ternary Fe-C-B composition and the other with a ternary Fe-C-Mn composition. Depending on the manganese content, two types of solid solutions could be formed: (Fe, Mn)α or (Fe, Mn)γ.

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An Overview on Additive Manufacturing of Duplex Stainless Steels: Microstructure, Mechanical Properties, Corrosion Resistance, Postheat Treatment, and Future Perspectives

Karunanithi,

Arasappan,

Nallathambi

2024

steel research int.

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Additive manufacturing (AM) is a cutting‐edge technique for constructing intricate components with unique microstructural features and strength comparable to wrought alloys. Due to their exceptional corrosion resistance and mechanical properties, duplex stainless steels (DSS) are used in a wide range of critical applications. Over the past several years, a substantial body of research has been conducted on the AM of DSS. In‐depth knowledge is required to understand the complete benefits of the AM process. This review overviews the AM‐processed DSS parts based on process‐specific microstructural changes, mechanical behavior, electrochemical performance, and postheat treatment processes based on the classifications of directed energy deposition and powder bed fusion AM techniques along with future perspectives. Major challenges in AM of DSS are optimizing the austenite–ferrite fractions and controlling the formations of deleterious phases. This review will be extensively useful to researchers and industries working in the AM of DSS.

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Improvement of pitting corrosion resistance of wire arc additive manufactured duplex stainless steel through post-manufacturing heat-treatment

Cited by 41 publications

References 26 publications

Pitting and Crevice Corrosion Behavior of the Duplex Stainless Steel UNS S32205 Welded by Using the GTAW Process

Pitting and Crevice Corrosion Behavior of the Duplex Stainless Steel UNS S32205 Welded by Using the GTAW Process

Phase Equilibrium and Microstructure Examinations of Eutectic Fe-C-Mn-B Alloys

An Overview on Additive Manufacturing of Duplex Stainless Steels: Microstructure, Mechanical Properties, Corrosion Resistance, Postheat Treatment, and Future Perspectives

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