Effect of Weld Cooling Rates on Mechanical and Metallurgical Properties of Submerged Arc Welded Pressure Vessel Steel

Arya, Harish Kumar; Singh, Kulwant; Saxena, Ravindra K.

doi:10.1115/1.4040274

Cited by 11 publications

(7 citation statements)

References 8 publications

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“…The high values of microhardness are normalized along fusion zone and heataffected zone (HAZ) after PWHT. Arya et al [2] investigated the effect of different plate thicknesses and cooling rates on microstructure and mechanical properties of SA 516 grade 60 pressure vessel steel welded using submerged arc welding. It is established that plates with higher thickness with same heat input resulted in better impact strength to that of thinner plates.…”

Section: Introductionmentioning

confidence: 99%

Effect of process parameters on bead geometry, tensile and microstructural properties of double-sided butt submerged arc welding of SS 304 austenitic stainless steel

Sridhar

Biswas

Mahanta

2020

J Braz. Soc. Mech. Sci. Eng.

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The purpose of this investigation is to study the effect of welding variables on bead geometry, fusion zone profile and tensile properties of double-sided submerged arc welding on SS 304 austenitic stainless steel. The individual effect of welding parameters, i.e., welding current, voltage and traverse speed, on bead geometry and tensile properties was investigated. Both microstructural and mechanical characterizations of the weldment were carried out in the present study. It was observed that the operating parameters have significant effect on bead geometry and tensile properties. The double-sided welding effectively enhanced the weld seam ductility. The percentage of elongation is improved by 19.48% to 50.2% for double-sided samples as compared to base material. A comparative study between single and double-sided butt welding was also carried out. For single-sided sample the percentage of elongation is lower than the base material. The percentage reduction in angular distortion of 55.17% is observed with double-sided weld sample as compared to single-sided weld sample.

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Section: Introductionmentioning

confidence: 99%

Effect of process parameters on bead geometry, tensile and microstructural properties of double-sided butt submerged arc welding of SS 304 austenitic stainless steel

Sridhar

Biswas

Mahanta

2020

J Braz. Soc. Mech. Sci. Eng.

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“…It is observed from Table 2 that the average heat input to the V-joint is 0.67kJ/mm, whereas it is 0.55kJ/mm to the Ujoint. The approximate values of the cooling rate were 29 K/min for V-joint and 35 K/min for U-joint, confirming that the lower value of heat input results in a higher cooling rate in the steel weldment stated by Arya et al (2018). The higher cooling rate and reheating in the root of the U-joint lead to the formation of columnar and coarse grains, respectively (Chen et al, 2009).…”

Section: Microstructural Observationsmentioning

confidence: 51%

Joint-design effect on the metallurgical and mechanical behavior of duplex stainless steel welds

Dhiman¹,

Singhal²,

Saxena³

2022

Int. J. Eng. Sci. Tech

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In the present investigation, the influence of joint design on the microstructure and the mechanical properties of SAF 2205 duplex stainless steel welds are reported. Plates with two different joint designs were welded using the gas tungsten arc welding process. To investigate the sole effect of joint design, the joints were designed in such a way that both joints have similar groove volumes. The weldments were investigated for microstructural characterization, ferrite content, and microhardness study; later, they were subjected to Charpy V-notch impact test, transverse tensile test, and fatigue testing in order to investigate the mechanical performance. Both the weld joints were able to achieve 100% joint efficiency in view of the transverse tensile test. Different weld joint configurations demonstrated the influence of the differential heat dissipation characteristics of the joints, evident from different morphological features revealed through optical microscopy of the weldment. The welding affected the ferrite(α)-austenite(γ) ratio of the weld metals and differed the welds in terms of ferrite content in the root and weld pass. The weld zone of the U-joint showed a 65.8% ferrite fraction and thus showed 18% more hardness as compared to the V-joint, while the V-joint had the highest yield stress of 617 MPa. The study revealed that the U-joint performed better in comparison to the V-joint in terms of microhardness, impact toughness, and fatigue behavior. The U-joint could resist around 15% more fatigue cycles than the V-joint under high cycle fatigue.

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“…The SA 516 grade 70 with a thickness of 12 mm was used as the base material. This material is extensively used for the fabrication of boilers, pressure vessels and heat exchangers [8]. The filler wire EH-14 was used in combination with flux manufactured using steel slag as raw material.…”

Section: Conducting the Experimentsmentioning

confidence: 99%

Experimental investigation and optimization of weld bead shape factor and form factor using recycled steel slag as a flux in submerged arc welding process

Saini

Singh

Garg³

2022

IOP Conf. Ser.: Mater. Sci. Eng.

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The quality and productivity of welds produced depend upon the weld bead profile which is represented by weld penetration shape factor (WPSF) and weld reinforcement form factor (WRFF). The weld profile is further dependent upon welding parameters used hence optimization of welding parameters is essential. In this research work, the steel slag has been recycled to act as a flux in submerged arc welding. The effect of process parameters on WPSF and WRFF using recycled slag has been evaluated. The mathematical models have been developed from the data created. It was found that the weld deposited with recycled steel slag performs well as the WPSF and WRFF are comparable with that deposited with fresh flux. The welding parameters have been optimized using the desirability approach and genetic algorithm. The genetic algorithm yielded more accurate results as compared to the desirability approach.

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Effect of Weld Cooling Rates on Mechanical and Metallurgical Properties of Submerged Arc Welded Pressure Vessel Steel

Cited by 11 publications

References 8 publications

Effect of process parameters on bead geometry, tensile and microstructural properties of double-sided butt submerged arc welding of SS 304 austenitic stainless steel

Effect of process parameters on bead geometry, tensile and microstructural properties of double-sided butt submerged arc welding of SS 304 austenitic stainless steel

Joint-design effect on the metallurgical and mechanical behavior of duplex stainless steel welds

Experimental investigation and optimization of weld bead shape factor and form factor using recycled steel slag as a flux in submerged arc welding process

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