Ameliorative Corrosion Resistance and Microstructure Characterization of 2205 Duplex Stainless Steel by Regulating the Parameters of Pulsed Nd:YAG Laser Beam Welding

Abdo, Hany S.; Seikh, Asiful H.; Mohammed, Jabair Ali; Uzzaman, Tauriq

doi:10.3390/met11081206

Cited by 18 publications

(12 citation statements)

References 37 publications

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“…The maximum mechanical properties were obtained at lower heat input [27]. In another work presented by Abdo et al [28], the effect of heat input parameters of pulsed YAG laser on the corrosion resistance of 2205 duplex stainless steel welded joints were reported. The welded joints obtained at a higher pulse energy showed higher corrosion resistance than that obtained at a low pulse energy [28].…”

Section: Introductionmentioning

confidence: 85%

“…In another work presented by Abdo et al [28], the effect of heat input parameters of pulsed YAG laser on the corrosion resistance of 2205 duplex stainless steel welded joints were reported. The welded joints obtained at a higher pulse energy showed higher corrosion resistance than that obtained at a low pulse energy [28]. Li et al [29] explored the thermal performance and solidification characteristics of 304 stainless steel during laser welding.…”

Section: Introductionmentioning

confidence: 96%

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A Study on the Fiber YAG Laser Welding of 304L Stainless Steel

Mahmoud

AlMohamadi

Aljabri

et al. 2021

Metals

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This work aims to optimize the main YAG fiber laser parameters to weld 304L stainless steel plates of 3 mm thick. Different laser powers (2500, 2000, and 1500 W) and speeds (60, 40, and 20 mm/s) were used and merged in heat input, maintaining the defocusing distance at –2 mm to get full penetration. The weld quality and the effect of the laser heat input on the microstructures of the weld and heat-affected zones were investigated. Besides, the fracture strength of the welded joints and hardness distribution through the cross-sections were evaluated. The weld width has a direct relationship with heat input. The laser power of 2800 W produced full penetration joints without any macro defects while reduction in laser power pronounced partial penetration defects. The size of the heat-affected zone in all the processing parameters was very small. The microstructure of the weld zone shows columnar dendrite austenite grains with small arm spacing in most of the welded zone. The size of the dendrites became finer at lower heat input. At a higher heat input, a reasonable amount of lathy equiaxed grains with some delta ferrite occurred. A small amount of delta ferrite was detected in the heat-affected zone, which prevented the crack formation. The hardness of the weld metal was much higher than that of the base metal in all processing parameters and it has a reverse relationship with the heat input. The fracture strength of the welded joints was very close to that of the base metal in the defect-free samples and it increased with decreasing the heat input.

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Section: Introductionmentioning

confidence: 85%

Section: Introductionmentioning

confidence: 96%

A Study on the Fiber YAG Laser Welding of 304L Stainless Steel

Mahmoud

AlMohamadi

Aljabri

et al. 2021

Metals

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“…In order to determine the anticorrosion properties of the prepared nanocomposites exposed to the aggressive environment of 3.5% NaCl solution, the EIS technique was employed [38][39][40][41][42]. Nyquist plots were obtained for the fabricated samples with compositions of 0, 1, 3 and 5 wt.% by varying their percentages for the immersion time of 1 h, as shown in Figure 5.…”

Section: Electrochemical Measurements 321 Electrochemical Impedance Spectroscopy (Eis)mentioning

confidence: 99%

Electrochemical Behavior of Inductively Sintered Al/TiO2 Nanocomposites Reinforced by Electrospun Ceramic Nanofibers

et al. 2021

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This study is focuses on the investigation of the effect of using TiO2 short nanofibers as a reinforcement of an Al matrix on the corrosion characteristics of the produced nanocomposites. The TiO2 ceramic nanofibers used were synthesized via electrospinning by sol-gel process, then calcinated at a high temperature to evaporate the residual polymers. The fabricated nanocomposites contain 0, 1, 3 and 5 wt.% of synthesized ceramic nanofibers (TiO2). Powder mixtures were mixed for 1 h via high-energy ball milling in a vacuum atmosphere before being inductively sintered through a high-frequency induction furnace at 560 °C for 6 min. The microstructure of the fabricated samples was studied by optical microscope and field emission scanning electron microscope (FESEM) before and after corrosion studies. Corrosion behavior of the sintered samples was evaluated by both electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization techniques (PPT) in 3.5% NaCl solution for one hour and 24-h immersion times. The results show that even though the percentage of ceramic nanofibers added negatively control corrosion resistance, it is still possible to increase resistance against corrosion for the fabricated nanocomposite by more than 75% in the longer exposure time periods.

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“…Corrosion resistance and mechanical performance of DSS is depending mainly on the phase balance composition, since ferrite affects significantly the strength, toughness, and resistance to corrosion, while austenite controls the ductility with little contribution to corrosion resistance. It has been demonstrated that the most appropriate phase balance giving the optimum DSS performance is the composition of 50% ferrite and 50% austenite in sufficient Nitrogen (N 2 ) stream [1][2][3]. Welding of DSS is changing the phase composition of the base matrix, consequently, electrochemical behaviour and mechanical properties of the fusion zone (FZ) and heat-affected zone (HAZ) will definitely change according to the change in the phase balance and its proportions [4,5].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Corrosion Behavior of Laser Welded 2205 Duplex Stainless-Steel in Artificial Seawater Environment under Different Acidity and Alkalinity Conditions

et al. 2021

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The electrochemical corrosion behavior of laser welded 2205 duplex stainless-steel in artificial seawater environment (3.5% NaCl solutions) with different acidity and alkalinity conditions (different pH values) was investigated using different techniques. Namely, capacitance measurements (Mott–Schottky approach), electrochemical impedance spectroscopy and potentiodynamic polarization measurements. The formation of pitting corrosion on the exposure surfaces of the tested duplex stainless-steel samples was investigated and confirmed by characterizing the surface morphology using field emission scanning electron microscope (FE-SEM). Based on the obtained results, a proportional relation has been found between pH value of the solution medium and the generated film resistance due to the processes of charge transfer, which directly affecting the pitting formation and its specifications. Since the film layer composition created on the duplex stainless-steel surface is changes depending on the pH value, it was found that different bilayer structure type was generated according to the acidity or alkalinity level. The presented bilayer is almost composed from metal oxides, such as iron oxide and chromium oxide, as confirmed by Raman Spectroscopy technique. As the pits size and its quantity increased with decreasing pH value, it can be concluded that the corrosion resistance property of the laser welded 2205 duplex stainless-steel sample is improved on the alkalinity direction of the solution. Vice versa, higher acidic solution has more ability for corrosion.

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Ameliorative Corrosion Resistance and Microstructure Characterization of 2205 Duplex Stainless Steel by Regulating the Parameters of Pulsed Nd:YAG Laser Beam Welding

Cited by 18 publications

References 37 publications

A Study on the Fiber YAG Laser Welding of 304L Stainless Steel

A Study on the Fiber YAG Laser Welding of 304L Stainless Steel

Electrochemical Behavior of Inductively Sintered Al/TiO2 Nanocomposites Reinforced by Electrospun Ceramic Nanofibers

Electrochemical Corrosion Behavior of Laser Welded 2205 Duplex Stainless-Steel in Artificial Seawater Environment under Different Acidity and Alkalinity Conditions

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