Recent Advances in the Prediction of Weld Residual Stress and Distortion - Part 1

Yang, Yuqiu

doi:10.29391/2021.100.013

Cited by 15 publications

(11 citation statements)

References 51 publications

(52 reference statements)

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“…In addition, columnar grain morphology having epitaxial growth tendency occurring in the weld bead also causes inhomogeneous mechanical properties in the structure. Thus, this region is a significant point to be emphasized that also determines the performance and service life of the workpiece [71,72]. Therefore, grain refining, which enhances mechanical properties, is an important issue for arc-welded joints [70].…”

Section: Inoculationmentioning

confidence: 99%

How to avoid solidification cracking in arc welding of aluminum alloys: a review on weld metal grain refinement approaches

Yolcu,

Kahraman

2023

Mater. Res. Express

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Joining aluminum alloys with arc welding methods is frequently subject to literature and industrial applications. Although aluminum alloys have different difficulties in the arc welded process, the formation and elimination of solidification cracking defects is a more complex phenomenon. Since avoidance of this defect requires specific approaches and methods, special attempts and improvements have been studied frequently on this subject in recent years. Studies in the literature have clearly shown that this defect, which is often encountered in aluminum alloys, takes place along the grain boundaries. Therefore, the major approach to eliminate this defect is activating nucleation and decreasing the grain size. In this context, modification approaches in the literature, which are frequently used for arc welding of aluminum alloys, have been developed to use three different mechanisms including heterogeneous nucleation, dendrite fragmentation, and grain detachment. While it is aimed to increase heterogeneous nucleation by reinforcing filler metals with compounds in the inoculation approach; dendrite fragmentation and grain detachment are also aimed in the approaches where external effects and forces are used. Within the frame of references, it is also possible to review the external factors aiming to improve weld pool convection and thermal conditions under two headings, which are weld pool stirring and pulsed arc current approaches. The weld pool stirring approach also includes ultrasonic treatment and magnetic arc oscillation methods. In this study, solidification cracking defect that frequently occurs in the arc welding of aluminum alloys is explained fundamentally and the attempts to eliminate this defect are presented as a review paper in a comprehensive manner.

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Section: Inoculationmentioning

confidence: 99%

How to avoid solidification cracking in arc welding of aluminum alloys: a review on weld metal grain refinement approaches

Yolcu,

Kahraman

2023

Mater. Res. Express

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“…A sequential 3D coupling FE model of AA6061-T6 plate-to-sleeve welded joints was developed based on ABAQUS Software and Python subroutine. [29][30][31] The geometrical dimension and welding pass arrangement were exactly the same as the actual welded joint. The thermal analysis was first performed, and then the temperature history of nodes was mapped to the mechanical analysis model.…”

Section: Numerical Modelingmentioning

confidence: 99%

Numerical simulation of welding deformation and residual stress in aluminum alloy plate-to-sleeve welded joints

Zhao

You

2022

Proceedings of the Institution of Mechanical Engineers, Part L:

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The plate-to-sleeve welded joint is employed in the aluminum alloy spatial structure. The welding deformation and residual stress determine the dimensional accuracy and even increase the failure risk. Based on ABAQUS software and the coordinate transformation method, a finite element model with the arc weaving was developed to investigate the temperature field, welding deformation, and residual stress of an AA6061-T6 plate-to-sleeve welded joint with 8-pass. The metal inert gas welding experiment was performed with the corresponding joint, and the welding deformation and residual stresses were measured to verify the numerical results. The results show that the thermal cycle of the weaving weld and its vicinity have multiple peaks, and the time interval between two adjacent peaks is one weaving period. The deformation pattern of the joint is angular deformation. The maximum deformation is observed in the weld toe of the top surface. The longitudinal residual stress in the weld and its vicinity is high tensile stress, and that in the upper part of the sleeve is mainly compressive stress. The transverse residual stress in the weld and its vicinity of the top surface is low tensile stress, and that in the bottom surface is compressive stress. Furthermore, the evolution of the welding deformation and residual stresses attributed to subsequent weld passes was elaborated, which provides a reference for developing control schemes.

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“…Liu et al (2021) delve into the mitigation of residual stress and deformation induced by Tungsten Inert Gas (TIG) welding in thin-walled pipes through external constraints, showcasing the contemporary relevance of welding techniques [24]. Yang (2021) [25] offers a glimpse into recent advances in predicting weld residual stress and distortion, underlining the role of predictive modeling in this evolving eld.The most recent addition to our narrative, Guo et al (2022) [26] explores the effect of post-weld heat treatment on microstructure and corrosion behavior in weld overlay cladding materials, accentuating the importance of material-speci c approaches in managing residual stresses.…”

Section: Introductionmentioning

confidence: 99%

Behavior, Failure Analysis, and Effectiveness of Mechanical Stress Improvement Process in Residual Stress Relaxations in Butt-Welded Austenitic Piping Using a Numerical Simulation Approach

Zeghida,

Guedri,

Allaoui

et al. 2024

Preprint

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The utilization of the Mechanical Stress Improvement Process (MSIP) is a widely employed technique to improve the behavior and the failure analysis in nuclear power plants. Its purpose is to effectively prevent stress corrosion cracking by eliminating residual tensile stresses present in weldments. This approach serves to impede the formation of cracks and decelerate the advancement of existing failures in piping systems. Consequently, favorable compressive stresses are created along the inner surface of the pipe near the weld, including molten and heat-affected metal zones. To assess the efficacy of MSIP in reducing stress concentrations and enhancing structural integrity, multiple cases were evaluated via numerical simulations in this study. Moreover, the dimensions and placement of the MSIP tool were discussed, with the optimal position and width of the clamp being determined to be 30 mm from the weld line (WL) and 75 mm, respectively. The results of this study indicate that the WL region manifests significantly high compressive stresses, which gradually diminish within a 10 mm distance on each side of the WL.

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Recent Advances in the Prediction of Weld Residual Stress and Distortion - Part 1

Cited by 15 publications

References 51 publications

How to avoid solidification cracking in arc welding of aluminum alloys: a review on weld metal grain refinement approaches

How to avoid solidification cracking in arc welding of aluminum alloys: a review on weld metal grain refinement approaches

Numerical simulation of welding deformation and residual stress in aluminum alloy plate-to-sleeve welded joints

Behavior, Failure Analysis, and Effectiveness of Mechanical Stress Improvement Process in Residual Stress Relaxations in Butt-Welded Austenitic Piping Using a Numerical Simulation Approach

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