Modern Engineering of Arc Welding Provides Wider Scope in Thermomechanical Weld Simulation for Fabrication of Advanced Structural Steels

Ghosh, P. K.; Kulkarni, Shrirang; Devkumaran, K.

doi:10.1080/10426910903206717

Cited by 9 publications

(3 citation statements)

References 5 publications

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“…For all experiments a thermocouple was used to measure the thermal cycles. Ghosh et al (2010) and has been used thermal simulation process and Shome et al (2004) have reported thermal cycles for simulation of welding process, but in this research these cycles has been modified for thermal simulation of the TSAW process. In experiments, the thermal cycle parameters are selected on the basis of the actual four-wire TSAW process and swing range.…”

Section: Methodsmentioning

confidence: 99%

Role of tandem submerged arc welding thermal cycles on properties of the heat affected zone in X80 microalloyed pipe line steel

Moeinifar

Kokabi

Hosseini

2011

Journal of Materials Processing Technology

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Section: Methodsmentioning

confidence: 99%

Role of tandem submerged arc welding thermal cycles on properties of the heat affected zone in X80 microalloyed pipe line steel

Moeinifar

Kokabi

Hosseini

2011

Journal of Materials Processing Technology

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“…The normal welding process, having different welding parameters, is basically stable, which makes it difficult to get characteristic signals that reflect upon the overall stability of the process. The approach to optimize the welding parameters so as to get the best combination to ensure a perfect welding process is now of concern in modern welding technology [8,9]. However, there does exist the need to evaluate the overall stability of the process using the appropriate criterion since the welding process is basically nonlinear.…”

Section: Introductionmentioning

confidence: 99%

An Analysis of Gas Metal Arc Welding Using the Lyapunov Exponent

Zhang

et al. 2013

Materials and Manufacturing Processes

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The characteristics of chaos are unique to the technique of gas metal arc welding (GMAW), which can be safely classified as being a nonlinear process. In this article, salient aspects relevant to the development and use of computational technique to accurately calculate the maximum Lyapunov exponent of the welding processes for different parameters is presented and discussed. The maximum Lyapunov exponent is then used to evaluate stability of the welding process while concurrently aiding in the selection of the welding parameters. Careful analysis of the results reveals overall chaos to exist in the gas metal arc welding process for the different droplet transfer modes. Overall stability of the welding process is related to the chaos that is generated and exists. The maximum Lyapunov exponent can be safely used as a valid criterion for evaluating the stability of the welding process. This aids in the selection of an optimized welding parameter for the welding process to form a weld bead that has both quality and integrity.

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“…The extent of the austenite grain growth is dependent upon the weld thermal cycle, the steel composition and the precipitate chemistry. In order to prevent brittle fracture, excellent low-temperature toughness is required in the base metal and the HAZ of a pipeline's welded joint [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Influence of Thermal Simulated and Real Tandem Submerged Arc Welding Process on the Microstructure and Mechanical Properties of the Coarse Grained Heat Affected Zone

Moeinifar

2011

AMM

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The high-strength low-alloy microalloyed steel was procured as a hot rolled plate with accelerated cooling. The Gleeble thermal simulated process involved heating the steel specimens to the peak temperature of 1400 °C, with constant cooling rates of 3.75 °C/s and 2 °C/s to room temperature. The four-wire tandem submerged arc welding process, with different heat input, was used to generate a welded microstructure. The martensite/austenite constituent appeared in the microstructure of the heat affected zone region for all the specimens along the prior-austenite grain boundaries and between bainitic ferrite laths. The blocky-like and stringer martensite/austenite morphology were observed in the heat affected zone regions. The martensite/austenite constituents were obtained by a combination of field emission scanning electron microscopes and image analysis software The Charpy absorbed energy of specimens was assessed using Charpy impact testing at-50 °C. Brittle particles, such as martensite/austenite constituent along the grain boundaries, can make an easy path for crack propagation. Similar crack initiation sites and growth mechanism were investigated for specimens welded with different heat input values.

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Modern Engineering of Arc Welding Provides Wider Scope in Thermomechanical Weld Simulation for Fabrication of Advanced Structural Steels

Cited by 9 publications

References 5 publications

Role of tandem submerged arc welding thermal cycles on properties of the heat affected zone in X80 microalloyed pipe line steel

Role of tandem submerged arc welding thermal cycles on properties of the heat affected zone in X80 microalloyed pipe line steel

An Analysis of Gas Metal Arc Welding Using the Lyapunov Exponent

Influence of Thermal Simulated and Real Tandem Submerged Arc Welding Process on the Microstructure and Mechanical Properties of the Coarse Grained Heat Affected Zone

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