Influence of postweld heat treatment on the variation of residual stresses in 50 mm thick welded ferritic steel plates

Smith, David J.; Garwood, S.J.

doi:10.1016/0308-0161(92)90083-r

Cited by 26 publications

(8 citation statements)

References 1 publication

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“…It was noteworthy that the maximum compressive stresses in the longitudinal direction for both butt joint and T-joint were relatively higher than the compressive limit of 304L steel, which implied cold working by the UIT induced plastic deformation of the weld joint. The similar level of compressive residual stresses higher than the material's yield limit was also obtained and reported by previous studies [11,28,32].…”

Section: Effects Of Uit On Weld Residual Stressessupporting

confidence: 65%

Numerical Simulation of Residual Stresses in Welding and Ultrasonic Impact Treatment Process

Tang¹,

Ince²,

Jiao³

2018

Residual Stress Analysis on Welded Joints by Means of Numerical Simulation and Experiments

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Welding technology is considered as a reliable and efficient joining method, which has been widely used in almost all the industry departments. Detrimental factors induced by welding such as micro-cracks/flaws, tensile residual stresses, high stress concentration may degrade the mechanical and fatigue properties of weld joints. Ultrasonic impact treatment (UIT) is considered one of the most efficient post-weld treatment which could improve the fatigue performance of weld joints. In this study, the effect of the UIT on residual stress distribution of 304L weld joints was particularly investigated. FE analysis simulation and the XRD experiment were performed to predict and measure residual stresses of both as-welded and the UIT-treated joints. Compared results show that simulated stresses are in good agreement with the experimental results along various paths, confirming the validity of welding model. The UIT introduces a compressive residual stress layer with depth between 2 and 3 mm near the impacting surface of weld joint.

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Section: Effects Of Uit On Weld Residual Stressessupporting

confidence: 65%

Numerical Simulation of Residual Stresses in Welding and Ultrasonic Impact Treatment Process

Tang¹,

Ince²,

Jiao³

2018

Residual Stress Analysis on Welded Joints by Means of Numerical Simulation and Experiments

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“…Similar techniques have been applied [7] to quantify stresses associated with an orbital tungsten inert gas (TIG) butt weld in a cast CF3 stainless steel pipe 68 mm thick. Also, Smith and Garwood [8] used the BRSL method to examine how post-weld heat treatment (PWHT) in¯uenced the variation in the residual stresses welded BS 1501-224 ferritic steel plates 50 mm thick. Sach's [9] boring method can be used to measure through-thickness residual stresses in components with an axisymmetric distribution of residual stresses.…”

mentioning

confidence: 99%

Measurement and prediction of residual stresses in thick-section steel welds

Smith

Bouchard

George

2000

The Journal of Strain Analysis for Engineering Design

137

115

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Significant levels of residual stress are developed in the production of thick-section steel welds. Residual stress can be measured by a variety of methods, although few offer the ability to determine the spatial distribution completely through the thickness. This paper summarizes recent developments in the deep-hole method for measuring residual stresses in thick-section welds. Experimental results obtained from a variety of welded steel components are described. The measurement method has also been used to provide validation for finite element simulations of residual stresses in a welded cylinder-to-nozzle stainless steel component. The paper describes the finite element weld analysis and compares the results with measurements obtained from several locations in the complex geometry. Overall, there is good agreement between the predicted and measured distributions of residual stress, but the magnitudes of predicted stress tend to be greater.

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“…They reported peak tensile residual stresses dropping from 600 MPa to 120 MPa after reheating to 750ºC during PWHT. Smith and Garwood [4], using the more classic method of hole drilling, have reported a similar finding in a submerged-arc weldment in a 50 mm thick ferritic steel. They found significant reduction from 740 MPa to 140 MPa following PWHT.…”

Section: Introductionmentioning

confidence: 60%

Investigating the Effects of Mitigation Techniques on Residual Stress and Microstructure of HSLA Welds

Alipooramirabad

Ghomashchi

Paradowska

et al. 2016

Residual Stresses 2016

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Abstract. Post-weld heat treatment is often required for pressure vessel and piping components for relaxing residual stresses and increasing the resistance to brittle fracture. The present study employed neutron diffraction to examine the effects of conventional post-weld heat treatment (PWHT) on the residual stresses in multi-pass, high-strength, low-alloy-steel, weld joints made by combined Modified Short Arc Welding (MSAW) and Flux Cored Arc welding (FCAW) processes. Residual stresses in excess of yield strength were developed in the Heat Affected Zone (HAZ) and the weld metal of the as-welded specimen (particularly the upper layers of the weld) which were reduced significantly as a result of applying PWHT. Also PWHT lead to substantial changes in the microstructural characteristics of high-strength, low-alloy-steel welds.

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Influence of postweld heat treatment on the variation of residual stresses in 50 mm thick welded ferritic steel plates

Cited by 26 publications

References 1 publication

Numerical Simulation of Residual Stresses in Welding and Ultrasonic Impact Treatment Process

Numerical Simulation of Residual Stresses in Welding and Ultrasonic Impact Treatment Process

Measurement and prediction of residual stresses in thick-section steel welds

Investigating the Effects of Mitigation Techniques on Residual Stress and Microstructure of HSLA Welds

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