Dissimilar laser beam welding of AISI 2507 super duplex stainless to AISI 317L austenitic stainless steel

Köse, Ceyhun; Topal, Ceyhun

doi:10.1016/j.msea.2022.144476

Cited by 16 publications

(3 citation statements)

References 67 publications

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“…Table 1 lists the chemical compositions of the SDSS samples, obtained through inductively coupled plasma mass spectrometry (ICP-MS), which was used to assess the impact of Cu and W on the passivation layer of SDSS (POSCO SS, SDSS, PRE above 40 to 50) with a PRE of 42 (PRE = wt.% Cr + 3.3 wt.% Mo + 16 wt.% N) [1,6,33,34]. The Schaeffler diagram shown in Figure 1 was used to determine the appropriate heat treatment conditions [2].…”

Section: Materials and Heat Treatmentmentioning

confidence: 99%

Effects of Passivation with Cu and W on the Corrosion Properties of Super Duplex Stainless Steel PRE 42

Kim,

Park

et al. 2024

Metals

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Carbon steel is subjected to several pretreatments to enable its use in highly corrosive environments, such as marine structures. However, its surface treatment is problematic owing to various processes, and these problems can be solved by replacing it with super duplex stainless steel (SDSS), which exhibits remarkable strength and corrosion resistance owing to its austenite and ferrite phases. EN 1.4410 and EN 1.4501 are the most extensively used SDSS grades in marine structures, as they exhibit exceptional strength and corrosion resistance in seawater. This study subjected EN 1.4410 and EN 1.4501 samples to specific heat treatment after casting and observed their structural alterations through field emission scanning electron microscopy. Their passivation states, with or without the Cu and W layers, were determined by examining their corrosion properties through open-circuit potential measurements, electrostatic polarisation tests, electrochemical impedance spectroscopy (EIS), and critical pitting temperature (CPT) analysis. The inclusion of Cu significantly improved the uniform corrosion resistance within the passivation layers, whereas the addition of W enhanced the pitting resistance (Epit, CPT). Additionally, the EIS analysis confirmed a double-layer structure in the passivation layer of EN 1.4501. Moreover, Cu did not act as a strengthening element of the passivation layer, whereas W significantly reinforced it.

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Section: Materials and Heat Treatmentmentioning

confidence: 99%

Effects of Passivation with Cu and W on the Corrosion Properties of Super Duplex Stainless Steel PRE 42

Kim,

Park

et al. 2024

Metals

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“…9,10 Different joining/bonding techniques like gas tungsten arc welding (GTAW), resistance spot welding (RSW), laser beam welding (LBW), transient liquid phase (TLP) joining, and so on could be applied to both DSS and ASS. [11][12][13] The observed concerns in the fusion bonding of dissimilar alloys are the creation of detrimental phases, grain coarsening, segregation, and cracking. 14,15 The ratio of ferrite to austenite in the weld metal (WM) and heat-affected zone (HAZ) structure of DSSs can be unbalanced by fast cooling rates during welding.…”

Section: Introductionmentioning

confidence: 99%

“…34 DSS and ASS are engineering alloys with superior behavior and the weld joints between these stainless steels were highly developed in critical industries. 11,13 For the time being, detailed investigations could scarcely be found around the RSW of AISI 2304 DSS/ AISI 321 ASS. Thus, it is compulsory to carefully work on the welding metallurgy, mechanical properties, and failure features of 2304 DSS/304 ASS welds.…”

Section: Introductionmentioning

confidence: 99%

Dissimilar joining of duplex AISI 2304 stainless steel/austenitic AISI 321 stainless steel using resistance spot welding technique: Microstructural evolutions, tensile-shear properties, and fracture analysis

Badkoobeh,

Mostaan,

Rafiei

et al. 2024

Proceedings of the Institution of Mechanical Engineers, Part C:

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In this work, microstructural characteristics and mechanical performance of spot weld joints of AISI 321 austenitic stainless steel (ASS)/AISI 2304 duplex stainless steel (DSS) were experimentally assessed. The welding current and time were varied to determine their effects on the failure load/energy and mechanism of dissimilar welds. The weld metal (WM)’s microstructure had a ferritic matrix as well as a distribution of grain boundary, Widmanstätten, and transgranular austenite. Some precipitates were found in the weld. The heat-affected zone (HAZ) of the AISI 321 ASS did not experience extensive phase evolutions and only grain coarsening occurred. This led to the HAZ softening. While extensive phase transformations were identified in the HAZ of the AISI 2304 DSS. Its microstructure contained a ferrite matrix with Widmanstätten and grain boundary-type austenite. Such microstructure resulted in the HAZ strengthening. Alteration of the welding condition from 1 kA – 2 s to 3 kA – 2 s raised peak load (tensile-shear strength) from 9.7± 0.8 to 16± 1 kN and energy absorbed to fracture from 15.52 ±1 to 51.2± 2 J. Enhanced WM size was responsible for them. Finally, as welding condition reached 4 kA – 2 s, they would decrease to 14.4±1 kN and 41.76± 3 J, respectively. It arises from surface splash. Once the welding condition varied from 3 kA – 1 s to 3 kA – 3 s, the weld performance was promoted i.e., improvement of peak load from 13± 1 to 19.6± 0.5 kN and energy absorbed to fracture from 23.4±2 to 49±3 J. It results from the WM enlarged. Ultimately, welding condition of 3 kA – 4 s causes a degradation in the weld performance i.e., drop of peak load to 15.8±1 kN and energy absorbed to fracture to 33.18± 2 J. This was on account of surface splash. With reference to the fracture analysis, interfacial, single pull-out, and double pull-out fracture modes were characterized.

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Effects of laser power on the microstructure, mechanical properties, and corrosion resistance of welded joints in dissimilar laser welding of 05Cr17Ni4Cu4Nb stainless steel and HR-2 stainless steel

Liu,

Zhao,

Han

et al. 2024

Int J Adv Manuf Technol

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Dissimilar laser beam welding of AISI 2507 super duplex stainless to AISI 317L austenitic stainless steel

Cited by 16 publications

References 67 publications

Effects of Passivation with Cu and W on the Corrosion Properties of Super Duplex Stainless Steel PRE 42

Effects of Passivation with Cu and W on the Corrosion Properties of Super Duplex Stainless Steel PRE 42

Dissimilar joining of duplex AISI 2304 stainless steel/austenitic AISI 321 stainless steel using resistance spot welding technique: Microstructural evolutions, tensile-shear properties, and fracture analysis

Effects of laser power on the microstructure, mechanical properties, and corrosion resistance of welded joints in dissimilar laser welding of 05Cr17Ni4Cu4Nb stainless steel and HR-2 stainless steel

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