Influence of LWE on Strength of Welded Joints of HSS S960—Experimental and Numerical Analysis

Dzioba, Ihor; Pała, T.

doi:10.3390/ma13030747

Cited by 4 publications

(3 citation statements)

References 33 publications

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“…The study of temperature evolutions over time at different distances from the welding interface is crucial in identifying various zones within the welding heat-affected zone (HAZ) [50]. The measurement of these temperature changes is illustrated in Figure 10.…”

Section: Thermal-mechanical Simulation Resultsmentioning

confidence: 99%

“…With distance from the welding interface, an instant decrease in temperature is expected, and both the slope of the temperature increase and the maximum temperature are smaller. In this simulation, it was calculated that the appearance of plastic deformation in the welding interface occurred at approximately 0.12 s, at a temperature of 1000 • C. The prediction of the temperature distribution led to the conclusion that all plastic deformation occurred in zones where the temperature exceeded 900 The study of temperature evolutions over time at different distances from welding interface is crucial in identifying various zones within the welding heat-affec zone (HAZ) [50]. The measurement of these temperature changes is illustrated in Fig 10 . With distance from the welding interface, an instant decrease in temperatur expected, and both the slope of the temperature increase and the maximum temperat are smaller.…”

Section: Thermal-mechanical Simulation Resultsmentioning

confidence: 99%

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Thermal–Mechanical and Microstructural Simulation of Rotary Friction Welding Processes by Using Finite Element Method

Mani,

Taherizadeh,

Sadeghian

et al. 2024

Materials

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Rotary friction welding is one of the most crucial techniques for joining different parts in advanced industries. Experimentally measuring the history of thermomechanical and microstructural parameters of this process can be a significant challenge and incurs high costs. To address these challenges, the finite element method was used to simulate thermomechanical and microstructural aspects of the welding of identical superalloy Inconel 718 tubes. Numerical simulation results were used to compute essential mechanical and metallurgical parameters such as temperature, strain, strain rate, volume fraction of dynamic recrystallization, and grain size distribution. These parameters were subsequently verified using experimental test results. The Johnson–Avrami model was utilized in the microstructural simulation to convert thermomechanical parameters into metallurgical factors, employing a FORTRAN subroutine. The calculated thickness of the recrystallization zone in the wall was 480 and 850 μm at the tube wall’s center and edge, respectively. These values were reported from experimental measurements as 500 and 800 μm, respectively. The predicted grain size changes from the center to the edge of the wall thickness, near the weld interface, ranged from 2.07 to 2.15 μm, comparable to the experimental measurements ranging from 1.9 to 2.2 μm. Various curves are also presented to explore the correlation between thermomechanical and microstructural parameters, with the experimental results revealing predictable microstructure evolutions correlated with thermomechanical changes.

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Section: Thermal-mechanical Simulation Resultsmentioning

confidence: 99%

Section: Thermal-mechanical Simulation Resultsmentioning

confidence: 99%

Thermal–Mechanical and Microstructural Simulation of Rotary Friction Welding Processes by Using Finite Element Method

Mani,

Taherizadeh,

Sadeghian

et al. 2024

Materials

View full text Add to dashboard Cite

show abstract

“…The programmed simulation used both aforementioned HS, where the Gaussian parameters and the efficiency of both sources are programmed (Dziopa, 2020). The dimensions of volumetric heat sources were adopted from a separate study, where the upper radius of the conical HS is 0.4 mm, the lower radius is 0.15 mm and the height of HS is 7 mm.…”

Section: Numerical Simulation Of the Laser Welding Of Flange Pipe Jointsmentioning

confidence: 99%

Numerical analysis of laser-welded flange pipe joints in lap and fillet configurations

et al. 2021

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This article presents a numerical analysis of laser-welded flange pipe joints. The presented results concern the welding of low carbon S235JR and stainless 316L steels using a CO2 laser in lap and fillet joint configurations. The estimation of welding parameters was achieved using Simufact Welding software and numerical simulation, where output power, feed rate, efficiency and intensity distribution (Gaussian parameter) were analysed. In accordance with the established model, a thermo-mechanical simulation was performed. The calculated joint geometries show good agreement with experiments; therefore, the obtained results were used to study selected joint properties of both joint types. Stress-strain distribution was estimated on the basis of thermomechanical analysis. Weld bead geometry obtained from numerical simulation was compared with the results from trial joints. The numerical model established for both joint configurations shows good agreement with experimental results and were assumed to be accurate. The results of the performed analysis shown some advantages of the use of this configuration of lap joints in flange pipe joints.

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Evaluation of Corrosion, Mechanical Properties and Hydrogen Embrittlement of Casing Pipe Steels with Different Microstructure

et al. 2021

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In the research, the corrosion and mechanical properties, as well as susceptibility to hydrogen embrittlement, of two casing pipe steels were investigated in order to assess their serviceability in corrosive and hydrogenating environments under operation in oil and gas wells. Two carbon steels with different microstructures were tested: the medium carbon steel (MCS) with bainitic microstructure and the medium-high carbon steel (MHCS) with ferrite–pearlite microstructure. The results showed that the corrosion resistance of the MHCS in CO2-containing acid chloride solution, simulating formation water, was significantly lower than that of the MCS, which was associated with microstructure features. The higher strength MCS with the dispersed microstructure was less susceptible to hydrogen embrittlement under preliminary electrolytic hydrogenation than the lower strength MHCS with the coarse-grained microstructure. To estimate the embrittlement of steels, the method of the FEM load simulation of the specimens with cracks was used. The constitutive relations of the true stress–strain of the tested steels were defined. The stress and strain dependences in the crack tip were calculated. It was found that the MHCS was characterized by the lower plasticity on the stage of the neck formation of the specimen and the lower fracture toughness than the other one. The obtained results demonstrating the limitations of the usage of casing pipes made of the MHCS with the coarse-grained ferrite/pearlite microstructure in corrosive and hydrogenating environments were discussed.

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Influence of LWE on Strength of Welded Joints of HSS S960—Experimental and Numerical Analysis

Cited by 4 publications

References 33 publications

Thermal–Mechanical and Microstructural Simulation of Rotary Friction Welding Processes by Using Finite Element Method

Thermal–Mechanical and Microstructural Simulation of Rotary Friction Welding Processes by Using Finite Element Method

Numerical analysis of laser-welded flange pipe joints in lap and fillet configurations

Evaluation of Corrosion, Mechanical Properties and Hydrogen Embrittlement of Casing Pipe Steels with Different Microstructure

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