Microstructure characterization and tensile properties of CMT-based wire plus arc additive manufactured ER2594

Nikam, Pranav; Arun, Damodaran; Sivashanmugam, N.

doi:10.1016/j.matchar.2020.110671

Cited by 45 publications

(11 citation statements)

References 17 publications

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“…Therefore, it should be expected that WAAM deposited ER2594 SDSS has the similar phase balance as welded joints. The phase balance across the WAAM-produced SDSS was consistent with previous literature [13,17,18] and the expected average values of 43% of α ferrite and 57% γ austenite across the entire height of the test walls.…”

Section: Microstructure Examinationsupporting

confidence: 89%

“…However, extensive research is yet to be conducted to understand the fatigue properties and effects of WAAM process parameters on these properties. Although there was some dominance of research on the microstructural characterisation and WAAM process modelling, minimum efforts were devoted to the investigation of the fatigue and crack growth behaviour of WAAM-processed materials [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

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Design against Fatigue of Super Duplex Stainless Steel Structures Fabricated by Wire Arc Additive Manufacturing Process

Sales

Kotousov

Yin

2021

Metals

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Additive manufacturing (AM) is increasingly used to make complex components for a wide spectrum of applications in engineering, medicine and dentistry. Wire arc additive manufacturing (WAAM), as one of AM processes, utilises electric arc and metal wire to fabricate fully dense and heavy metal parts at relatively low costs and high-energy efficiencies. WAAM was successfully applied in the production of several welding-based metal structures. Recently, there was a growing interest in WAAM processing of super duplex stainless steels (SDSS) due to their high strength and excellent corrosion resistance, which make them the prime choice for load-bearing structures in marine applications. Although a number of studies investigated the microstructural and mechanical properties of WAAM-processed SDSS components, little is known regarding their fatigue performance, which is critical in engineering design. This study reports on the outcomes of fatigue tests and fracture surface fractography of WAAM-processed SDSS. The results obtained indicate a significant anisotropy of fatigue properties and fatigue crack initiations resulting from internal defects rather than surface flaws. Based on these experimental results, we suggest an effective design methodology to improve the fatigue life of the WAAM-fabricated SDSS components. We also indicate that post-manufacturing surface treatments should not be underlined for the enhanced fatigue resistance of WAAM-processed SDSS structures.

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Section: Microstructure Examinationsupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Design against Fatigue of Super Duplex Stainless Steel Structures Fabricated by Wire Arc Additive Manufacturing Process

Sales

Kotousov

Yin

2021

Metals

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“…They studied the strength of the remelting and overlapping zones, and found that the yield strength and tensile strength of overlapping zone were low, while the strength of the stacking direction was the lowest. Pranav et al (Nikam et al, 2020) found that the mechanical properties along the welding direction were better, which also proved this point of view. The internal structure of the straight wall is slightly increased by the increase of interlaminar temperature, but the size increase is very small, and the strength of the bonding zone is slightly reduced by the increase of interlaminar temperature.…”

Section: Tensile Behaviormentioning

confidence: 62%

“…Kim et al (2020) have studied on nickelaluminum bronze made of CMT and proved that CMT arc additive manufacturing technology can obtain better performance than casting forming workpiece. Pranav et al (Nikam et al, 2020) used CMT to fabricated an ER2594 alloy straight wall and found that the tensile strength was better along the welding direction than in the stacking direction, but the percentage elongation of the samples was opposite due to having more slip systems in γ-FCC austenite. Wang et al (2020) used CMT technology to deposit a 316 L part onto a stainless-steel plate, and found that the multi-layer structure had a periodic structure in the stacking direction, in transverse stacking direction has two alternating structure which the one is the areas materials remelted with dispersed grain orientation, and the other one is the areas located at the overlapping areas of adjacent with concentrated grain orientations.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Mechanical Properties of Additively Manufactured Ni-Al Bronze Parts Using Cold Metal Transfer Process

Wang

Zhao²,

Chang³

et al. 2021

Front. Mater.

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In this paper, the microstructure and mechanical properties of the SG-CuAl8Ni6 Ni-Al bronze straight wall were studied, which was fabricated by the cold metal transfer (CMT) arc additive manufacturing technology. This Ni-Al bronze cladding layer of SG-CuAl8Ni6 is composed mainly of α-Cu, residual β phase, rich Pb phase and κ phase. The microstructure of this multilayer single-channel Ni-Al bronze straight wall circulating presents the overall periodic law, which changes from fine cellular crystals, columnar crystals to dendritic crystals with the increase of the distance from the substrate. The Vickers hardness value of the Ni-Al bronze straight wall decreases with the distance of substrate are between 155 and 185 HV0.5. The microhardness and elastic modulus of the Ni-Al bronze specimen are 1.57 times and 1.99 times higher than these of the brass matrix, respectively. The ultimate tensile strength (UTS) of the straight wall in the welding direction and 45° downward-sloping is greater than that of about 550 MPa in the stacking direction, and the elongation value in the welding direction is the highest. With the increase in interlayer temperature, the grain size increased gradually, and the tensile strength decreases slightly.

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“…However, tearing type failure mode did not coincided. Recrystallized and heat affected structures cause some defects such as grain coarsening, secondary phases and at fusion zone and heat affected zone [17,18]. Therefore, the base metal that has a higher strength than heat-affected zone and fusion zone cannot be torn.…”

Section: Resultsmentioning

confidence: 99%

Resistance spot weldability of Fe‐15.4Mn‐2.1Al‐1.2C twinning induced plasticity steel

Özen

Onar

Bulca

et al. 2023

Materialwissenschaft Werkst

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Welding of twinning induced plasticity steels contains problems due to high manganese constituent. Low manganese and high carbon included twinning induced plasticity steels have not studied throughly in the literature. In this study, resistance spot weldability of Fe‐15.4Mn‐2.1Al‐1.2C twinning induced plasticity steel was investigated. According to the results, interfacial, partial interfacial and pull‐out type failure modes were obtained in tensile‐shear tests. The maximum tensile‐shear load was measured as 17.7 kN with 125 J ⋅ Ω−1 heat input rate separated with pull‐out failure. Although the heat affected zone was narrow, it formed the weakest region of the joint. Cleavage facets which is a sign of brittle fracture were detected on the fracture surface that formed in heat affected zone. A sudden increase in hardness supports the brittleness of the heat affected zone. Also, grain coarsening reduced strength of the heat affected zone. A narrow partially melted zone was identified between heat affected zone and weld nugget. According to electron back scatter diffraction phase distribution analysis, formation of manganese carbides was detected in the heat affected zone.

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Microstructure characterization and tensile properties of CMT-based wire plus arc additive manufactured ER2594

Cited by 45 publications

References 17 publications

Design against Fatigue of Super Duplex Stainless Steel Structures Fabricated by Wire Arc Additive Manufacturing Process

Design against Fatigue of Super Duplex Stainless Steel Structures Fabricated by Wire Arc Additive Manufacturing Process

Microstructure and Mechanical Properties of Additively Manufactured Ni-Al Bronze Parts Using Cold Metal Transfer Process

Resistance spot weldability of Fe‐15.4Mn‐2.1Al‐1.2C twinning induced plasticity steel

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