Effects of Welding Speed on the Microstructure and Corrosion Behavior of Dissimilar Gas Metal Arc Weld Joints of AISI 304 Stainless Steel and Low Carbon Steel

Abioye, T.E.; Ariwoola, Olamide Emmanuel; Ogedengbe, T.I.; Farayibi, Peter Kayode; Gbadeyan, O.O.

doi:10.1016/j.matpr.2019.06.383

Cited by 25 publications

(13 citation statements)

References 6 publications

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“…Previous researches have indicated that the FZ corrosion resistance is higher than the base metal (BM) when the filler metal has a high content of Cr and Ni. This fact has been confirmed with different welding processes such as gas metal arc welding (GMAW) [9], shield metal arc welding (SMAW), and GTAW processes [10].…”

Section: Introductionmentioning

confidence: 72%

Study of cracking susceptibility in similar and dissimilar welds between carbon steel and austenitic stainless steel through finger test and FE numerical model

Alcantar-Modragón

García-García

Reyes-Calderón

et al. 2021

Int J Adv Manuf Technol

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Hot cracking susceptibility and the formation of brittle martensite phase are the main factors that limit the weldability of a dissimilar joint between carbon steel (CS) and austenitic stainless steel (SS). In this study, the self-constraint finger test was used to correlate the welding thermo-mechanical field with the crack susceptibility of a dissimilar weld between the CS ASTM A36 and SS AISI 304L. The finger test allowed to intercalate fingers (portions) of tested materials in the weld samples to produce dissimilar welds. The heat dissipation and the distortion behavior were related to the crack susceptibility, critical weld regions extension and chemical species diffusion. Four samples were welded (two similar welds and two dissimilar welds) using the filler metals ER70S-6 and EC410NiMo. Welds were analyzed through light optical microscopy (LOM) and scanning electron microscopy (SEM) to characterize phases, detect cracks, microstructural changes and element diffusion. A finite element (FE) numerical model was applied to simulate the welding thermo-mechanical field.Additionally, electrochemical tests were carried out to assess the corrosion susceptibility of the dissimilar welds. The observed cracks were produced due to different factors such as residual stress distribution, the formation of brittle and untempered martensitic phase in the fusion zone (FZ) and hot cracking associated with the weld sample distortion behavior. The dilution contributed to the formation of -ferrite in the FZ, which limited the growth of cold and hot cracks. The decarburization and sensitization were not observed in dissimilar welds due to the low element diffusion.

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Section: Introductionmentioning

confidence: 72%

Study of cracking susceptibility in similar and dissimilar welds between carbon steel and austenitic stainless steel through finger test and FE numerical model

Alcantar-Modragón

García-García

Reyes-Calderón

et al. 2021

Int J Adv Manuf Technol

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“…Figure 9 shows the potentiodynamic polarization curves of three different weld joint samples. It can be seen that there are obvious differences in the polarization curves of the three samples, which is due to the different passivation ability of the samples during the corrosion test and to form a thin oxidation protective film [17]. According to Abioye's research [18], samples with high corrosion potential and low corrosion current density have better corrosion resistance than samples with low corrosion current density and high corrosion current density.…”

Section: Corrosion Resistancementioning

confidence: 99%

Microstructure and Corrosion Resistance of Fusion Welding Zone for Duplextubes Welded with Q345R Tube Sheet under Different Welding Currents

Qian

Jin

et al. 2022

Metals

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Duplextubes are widely used in oil and gas storage and transportation, the nuclear industry, and other fields, but the welding quality of metals is an important factor affecting the use of equipment. In order to study the welding quality of S10C steel/Incoloy 825 duplextubes and Q345R tube sheet based on gas tungsten arc welding technology with a filler of ER50-6 carbon steel welding wire, the microstructure and grain size of fusion welding zone of duplextubes and tube sheet under welding currents of 150 A, 160 A, and 170 A were studied by optical microscopy and scanning electron microscopy. At the same time, the corrosion behavior of fusion welding zone after the welding was investigated in 3.5 wt.% NaCl solution by potentiodynamic polarization and electrochemical impedance spectroscopy. The results show that the metallurgical structure of the fusion welding zone was mainly composed of δ-ferrite and retained austenite. The grain size in the fusion welding zone increased with the increase of the welding current. The corrosion resistance of the fusion welding zone welded with a high welding current of 170 A was better than that with low welding currents. However, the pitting corrosion resistance of fusion welding zone with the lowest welding current of 150 A was better than that with high welding currents. This study can provide a preliminary exploration for the manufacture and applicability of duplextubes air coolers.

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“…Another property affected is micro-hardness, where an analysis on laser welded joints for Ti6Al4V titanium alloy exposed that it is higher as the welding speed increases [2]. Another effect found is that the corrosion performance in dissimilar Gas Metal Arc Weld Joints of AISI 304 improves as the speed values are decreased [3]. Study of corrosion is relevant for determining the weld performance since it can be the main cause of failure in some applications [4].…”

Section: Introductionmentioning

confidence: 99%

Efecto de la velocidad de avance en procesos de soldadura por arco eléctrico usando el método de elementos finitos

et al. 2021

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La soldadura es un proceso de unión de elementos comúnmente encontrado a nivel industrial donde uno de los tipos de mayor uso es el de arco eléctrico. Para su correcta aplicación se deben tener en cuenta variables como tipo de electrodo, amperaje, voltaje, velocidad de avance, polaridad, tipo de junta, entre otras. En este trabajo se evaluó el efecto de la velocidad de avance, la cual repercute directamente en el modo de transferencia de metal y en la morfología del cordón de soldadura, por lo tanto, se debe definir correctamente con el fin de lograr satisfactoriamente la unión de los materiales. Para determinar su efecto se calculó el perfil térmico en una placa mediante un software de elementos finitos. Los valores de velocidad empleados se tomaron de especificaciones recomendadas por proveedores industriales de consumibles de soldadura. Además, la simulación se realizó para una junta a tope, donde se asumió que la energía aplicada sobre el metal era uniforme y constante sobre un área circular.

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Effects of Welding Speed on the Microstructure and Corrosion Behavior of Dissimilar Gas Metal Arc Weld Joints of AISI 304 Stainless Steel and Low Carbon Steel

Cited by 25 publications

References 6 publications

Study of cracking susceptibility in similar and dissimilar welds between carbon steel and austenitic stainless steel through finger test and FE numerical model

Study of cracking susceptibility in similar and dissimilar welds between carbon steel and austenitic stainless steel through finger test and FE numerical model

Microstructure and Corrosion Resistance of Fusion Welding Zone for Duplextubes Welded with Q345R Tube Sheet under Different Welding Currents

Efecto de la velocidad de avance en procesos de soldadura por arco eléctrico usando el método de elementos finitos

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