Significance of Finite Element Models and Solid-State Phase Transformation on the Evaluation of Weld Induced Residual Stresses

Taraphdar, P.K.; Kumar, Rajiv; Pandey, Chandan; Mahapatra, Manas Mohan

doi:10.1007/s12540-020-00921-4

Cited by 58 publications

(17 citation statements)

References 33 publications

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“…Several measurement methods of residual stress have been examined. A deep hole drilling method is one of the typical destructive measurement methods [10]. The deep hole drilling method can measure not only surface stress but also through-thickness stress.…”

Section: Measurement Methodsmentioning

confidence: 99%

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An Investigation on the Features of Deformation and Residual Stress Generated by Patch Welding with Different Plate Sizes

2022

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Welding is widely used to manufacture and repair steel structures such as piping and pressure vessels. Welding induces deformation and residual stress, which influences the mechanical performance of the structural members. Noting patch welding, which is applied to repair steel structures, a series of patch welding experiments and numerical analyses were carried out. The features of out-of-plane deformation and residual stress by patch welding were examined by changing the patch size. The out-of-plane deformation showed different modes in the patch joints. The magnitude of the out-of-plane deformation depended on the patch size. The tensile residual stress at the weld toe increased with the enlargement of the patch size. The costs for the different sizes of patch welding were estimated for choosing the patch size reasonably. The patch size should be determined by considering the mechanical influences of welding and the economic viewpoints of the welding process.

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Section: Measurement Methodsmentioning

confidence: 99%

“…The features of welding residual stress have been investigated experimentally and analytically by the previous studies [10,11]. However, the joint type in these studies was not a patch welding but a groove welding of flat plates or pipes.…”

Section: Introductionmentioning

confidence: 99%

An Investigation on the Features of Deformation and Residual Stress Generated by Patch Welding with Different Plate Sizes

2022

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“…Their research provided a guidance on how to economically determine the reliable temperature-dependent yield strength for a given S960 steel. Taraphdar et al 13 developed a material model in which the change in volume and yield strength of weld metal due to Austenitic phase transformation were incorporated to investigate the effect of solid-state phase transformation on the residual stress in thick multi-pass butt-welded joint of SA516 Gr. 70 plates.…”

Section: Introductionmentioning

confidence: 99%

Microstructure analysis and hardness prediction based on microstructure evolution theory in multi-pass welded joint

Zhang

Zhuo

Zhou

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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During multi-pass butt-welding of high-strength steel (HSS) thick plate, it is difficult to estimate the hardness performance of thick weld since multi thermal cycles can drive complex microstructure evolution. In this study, butt-welded joint of 75 mm-thick Q690 HSS was prepared by multi-pass shielded metal arc welding (SMAW) in advance, meanwhile experiments were carried out to characterize microstructure and measure hardness distribution in butt-welded joint. Then the welding temperature history of butt-welded joint was numerically examined. Based on the irreversibility of Martensite and Bainite, the microstructure evolution model was modified to predict the complicated microstructure evolution in multi-pass welded joint. Compared with experimental data, the validity of modified microstructure evolution model was verified. With the application of simulated thermal cycles and material chemical compositions as input parameters, volume fraction distribution of each phase was obtained by modified microstructure evolution model and hardness value was calculated by hardenability algorithm. Both experimental and predicted results exhibited that microstructure in weld metal (WM) is mainly composed of granular Bainite with a small amount of Ferrite and Martensite, and heat-affected zone (HAZ) consists of predominantly lath Martensite. Hardness distribution in butt-welded joint obtained by the prediction method is in accordance with the measurement. Average hardness value in WM and BM is 290 VPN and 250 VPN. A sharp decrease in HAZ hardness can be found from the fusion line to base metal (BM). The maximal value is in the HAZ close to fusion line and the corresponding prediction deviation is 6%.

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“…In addition, the effects of the laser scanning path strategy [13,14], the laser-particle interaction [15], and the deposited materials [16] on the residual stress and residual distortion in DED AM products have all attracted more attention. Meanwhile, a lot of methods for controlling the residual stress in DED AM products were also proposed [17][18][19] based on achieved findings in welding [20,21]. As a few examples, Nie et al [17] stated that the application of a static magnetic field in the DED AM could greatly reduce the residual stress in a deposited Inconel 718 product.…”

Section: Introductionmentioning

confidence: 99%

Numerical Studies of the Effects of the Substrate Structure on the Residual Stress in Laser Directed Energy Additive Manufacturing of Thin-Walled Products

Jing

Zhang

et al. 2022

Metals

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A new method of controlling the residual stress in laser directed energy deposition additive manufacturing (DED AM) products proposed based on constraints used in manufacturing and the substrate design. The simulation results of the residual stress, which were validated with the experimental measured data, showed that weaker constraints on the substrate could greatly decrease the residual stress in the laser DED AM products. In addition, by designing local reduced thickness regions into the substrate, such as long strip holes or support legs, the residual stress in DED AM products could be further decreased. In this study, when long strip holes were designed in the substrate, the tensile residual stress was decreased by 28%. An even smaller amount of residual stress was achieved when the design structure was changed to support legs. The tensile residual stress decreased by more than 30%. The fewer support legs, the smaller the residual stress. The residual stress in DED AM products could be well-controlled by design, while the stiffness can be weakened with fewer constraints.

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Significance of Finite Element Models and Solid-State Phase Transformation on the Evaluation of Weld Induced Residual Stresses

Cited by 58 publications

References 33 publications

An Investigation on the Features of Deformation and Residual Stress Generated by Patch Welding with Different Plate Sizes

An Investigation on the Features of Deformation and Residual Stress Generated by Patch Welding with Different Plate Sizes

Microstructure analysis and hardness prediction based on microstructure evolution theory in multi-pass welded joint

Numerical Studies of the Effects of the Substrate Structure on the Residual Stress in Laser Directed Energy Additive Manufacturing of Thin-Walled Products

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