Double-Sided Single-Pass Submerged Arc Welding for 2205 Duplex Stainless Steel

Luo, Jian; Yi, Yu; Wang, Xiaoming; Zhang, Yao

doi:10.1007/s11665-013-0529-8

Cited by 33 publications

(20 citation statements)

References 21 publications

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“…The relationship between the heat input and the heat affected zone of the joint is studied, and found that excessive heat input will cause the grain size to be severely rough [8][9][10]. The deterioration of the properties caused by grain coarsening in the heat-affected zone and the joint softening caused by improper welding heat input is the main problem [9][10][11][12][13]. The microstructure of the LSAW joint is mainly made up of the coarse martensite phase and the bainite phase.…”

Section: Introductionmentioning

confidence: 99%

“…The LSAW is one of basic welding technology for the pipeline duo to its low cost, high efficiency, and good applicability [1]. However, because the characteristics of the LSAW, the properties of the metal-filled zone and the heat-affected zone are more difficult to control than that of the base metal, so the welding seam or welding joint is a weak for manufacturing the pipeline [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

“…One is the addition of small alloying element or reactive elements can have a significant effect on metal-filled zone, which is very expensive and complicated manufacturing process. The other is the post welding heat treatment method, which is low-cost and have a significant effect on all welding joint [10][11][12][13][14][15][16]. On the other hand, it is necessary to analyze the microstructure and fracture in different areas of LSAW joints.…”

Section: Introductionmentioning

confidence: 99%

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Mechanical properties and microstructure of longitudinal submerged arc welded joint of a new C–Mn steel sheet cladding fine grained ferrite in surface layer for a long distance transport pipeline

Fan

Luo

Gao

et al. 2020

Mater. Res. Express

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A new type of C-Mn pipeline steel plates with the ult5ra-fine grained ferrite in surface layer and the fine-grained ferrite in the central layer has been developed successfully. In order to manufacture the long distance oil pipelines using this new ultra-fine grain pipeline steel sheet, the microstructure and mechanical properties of the welded joints by the Longitudinal Submerged Arc Welding (LSAW), especially the impact toughness, need to be evaluated. Tensile tests, impact tests, are used to study the mechanical properties in this paper according the Chinese National standards. The metallographic technique and SEM are adapted to analyze the microstructure and impact fracture morphology of the LSAW joint. The research results show that the HAZ near the fusion line is a weak part of impact toughness of LSAW joint. However, the base metal is of the fine-grained and ultra-fine grained microstructure itself, and the heat treatment effects between the post-process welding seam and preprocess welding seam on the multi-layer and multi-pass submerged arc welding process, the impact toughness of the HAZ is greatly improved. The whole welded joint is better than the performance of ordinary pipeline steel, which is satisfied with the welding performance requirements of steel sheet engineering application, and can be used in long distance pipeline manufacturing projects.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Mechanical properties and microstructure of longitudinal submerged arc welded joint of a new C–Mn steel sheet cladding fine grained ferrite in surface layer for a long distance transport pipeline

Fan

Luo

Gao

et al. 2020

Mater. Res. Express

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“…Luo et al 4 studied SAW procedures to obtain DSS welds with an appropriate proportion of ferrite and austenite in the fusion and heat-affected zones. These authors found an average tensile strength of the welded joints of 795 MPa and verified the nucleation of cracks in the fusion zone.…”

Section: Introductionmentioning

confidence: 99%

Mechanical and Corrosion Properties of a Duplex Steel Welded using Micro-Arc or Laser

Lima¹,

Carvalho

Teleginski

et al. 2015

Mat. Res.

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Duplex stainless steels have been extensively used in parts that are subject to corrosive environments and that have high mechanical strength requirements. Welding usually distorts the well-balanced austenite-ferrite ratio, and can produce brittle intermetallic phases; therefore, post-welding heat treatments are usually required. For applications where post-welding treatments are not possible, low heat input methods, such as micro-tungsten inert gas welding (TIG) and laser beam welding (LBW), can be used. The present investigation analyzed the microstructure, mechanical, and corrosion properties of 2507-classduplex steel tubes after welding. The microstructures of the heat-affected zones and the fusion zones contained variable amounts of ferrite and austenite. In the heat-affected and fusion zones in the TIG samples, the microstructures were primarily composed of ferrite grains with allotriomorphic austenite at the grain boundaries, intragranular Widmanstätten needles and plate-like precipitates. The LBW samples showed much finer microstructures, which contained austenite in the grain boundaries and fine austenite precipitates in the ferrite grains. Deleterious intermetallic phases, such as σ-phases, were not observed using X-ray diffraction. The tensile strength properties were very similar for the TIG and LBWsamples, reaching tensile strengths of approximately 840 MPa and total elongations between 61 and 87%. The heat-affected zone of the TIG welds were particularly susceptible to corrosion (0.05 mm/year) compared to the base metal (0.007 mm/year) and the laser welds (0.01 mm/year). Therefore, laser welding is a promising technique for the welding of 2507-class duplex tubes.

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“…The manufacturing of facilities for these applications is currently carried out using mainly the conventional arc welding processes including GTA process [6][7][8][9]. The optimum performance of duplex stainless steel welded structures is achieved when nearly equal proportions of ferrite and austenite are present in the microstructure.…”

Section: Introductionmentioning

confidence: 99%

Effect of welding process type on mechanical and corrosion properties of SUS329J4L duplex stainless steel

El-Batahgy

Tsuboi

2014

Strength, Fracture and Complexity

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This research work is focused on laser beam and GTA welding processes and their effect on the size and microstructure of the fusion zone then, on the mechanical and corrosion properties of 3 mm thick JIS SUS329J4L duplex stainless steel plates. In contrary to GTA welding, laser beam welding with its lower heat input has resulted in a pronounced decrease in distortion level as well as a remarkable decrease in fusion zone size with much better weld profile.On the other hand and in comparison with laser beam welding, GTA welding with its higher heat input has resulted in better ferrite/austenite balance in fusion zone due to slower cooling rate. However, laser beam welded joint with its improper ferrite/austenite balance has demonstrated better tensile, impact and corrosion properties due to the remarkable decrease in its fusion zone size. This means that properties of the welded joints are influenced not only by the ferrite/austenite balance but also by the fusion zone size as a function of the welding process. The remarkable reduction of fusion zone size in case of laser welding is more effective for maintaining tensile, impact and corrosion properties, compared to the effect of ferrite/austenite balance that could be pronounced for fusion zones having similar sizes.

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Double-Sided Single-Pass Submerged Arc Welding for 2205 Duplex Stainless Steel

Cited by 33 publications

References 21 publications

Mechanical properties and microstructure of longitudinal submerged arc welded joint of a new C–Mn steel sheet cladding fine grained ferrite in surface layer for a long distance transport pipeline

Mechanical properties and microstructure of longitudinal submerged arc welded joint of a new C–Mn steel sheet cladding fine grained ferrite in surface layer for a long distance transport pipeline

Mechanical and Corrosion Properties of a Duplex Steel Welded using Micro-Arc or Laser

Effect of welding process type on mechanical and corrosion properties of SUS329J4L duplex stainless steel

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