Erratum to “Effect of welding sequences on residual stresses” [Comput Struct 81 (2003) 273–86]

Teng, Tso–Liang; Chang, Peng-Hsiang; Tseng, Wen-Cheng

doi:10.1016/s0045-7949(03)00163-9

Cited by 4 publications

(4 citation statements)

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“…The randomness of the R fill was generated through data science tools and a MATLAB random function to ensure that every point in the layer (i.e., all~7500 points noted above) was melted once. The Dehoff strategy is a spot-melt mode that mimics the objective of separating thermal inputs somewhat analogously to back-step welding strategy [38] that is followed across an entire area. In the Dehoff strategy, the melting of all points in an area is ordered, but not continuous (Figure 1(b)).…”

Section: Introductionmentioning

confidence: 99%

Texture Analysis of Additively Manufactured Ti-6Al-4V Deposited Using Different Scanning Strategies

Quintana

Kenney

Collins

2020

Metall Mater Trans A

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A limited number of features that comprise the more wholistic materials state of electron beam, powder bed additively manufactured Ti-6Al-4V have been investigated. Coupling scanning electron microscopy and orientation microscopy, the microstructure and texture of samples produced using different AM scan strategies have been studied at various positions along the build height of the samples. Both the qualitative and quantitative results, including parent beta grain orientation, alpha lath texture, and predominant type of microstructure (colony vs basketweave), and their length scales are included. Both the scan strategy used for the build and the time between proximal molten pool passes have been shown to significantly influence the resulting microstructure and texture.

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Section: Introductionmentioning

confidence: 99%

Texture Analysis of Additively Manufactured Ti-6Al-4V Deposited Using Different Scanning Strategies

Quintana

Kenney

Collins

2020

Metall Mater Trans A

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“…52 The implications of welding distortion for manufacturing (aside from those related to other effects of residual stress) are of great practical concern, 53,54 and have led to the development of a host of techniques specifically to prevent distortion, without aiming to remediate the underlying residual stress. These include bending back of distorted weldments, presetting, 55 control of mechanical constraint, 56,57,58 control of weld sequencing, 53,59,60 and flame straightening. An example of the effects of varying mechanical constraint is shown in Fig.…”

Section: Distortionmentioning

confidence: 99%

Contemporary approaches to reducing weld induced residual stress

Coules

2013

Materials Science and Technology

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General rightsThis document is made available in accordance with publisher policies. Please cite only the published version using the reference above. AbstractSelf-equilibrating residual stresses may occur in materials in the absence of external loading due to internal strain inhomogeneity. While favourable distributions of residual stress can bestow an object with the appearance of superior material properties, most welding processes leave behind residual stresses in particularly unfavourable patterns, causing a greater susceptibility to fracture-based failure mechanisms and unintended deformation. Currently, heat treatment is the primary means of removing these stresses, but since the formation of residual stress is dependent upon many material and process factors, there are several other viable mechanisms (using thermal, mechanical or phase transformation effects) by which it may be modified. It is only now, using relevant advances in numerical and experimental methods, that these techniques are being fully explored. This article gives a brief introduction to weld-induced residual stresses and reviews the current state-of-the-art with regard to their reduction. Emphasis is placed on the recent development of unconventional techniques, and the mechanisms by which they act.

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“…The quality of welding influences the quality of the project directly. Therefore, in order to control the quality of the metal structure, a proper welding sequence is essential [4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Influence of a welding sequence on the welding residual stress of a thick plate

Fang

Liu

et al. 2005

Modelling Simul. Mater. Sci. Eng.

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The residual stress in one-groove welding using an ellipsoidal heat source is analysed. The results show that it can ameliorate the residual stress distribution and greatly decrease the peak value of residual stress after welding if the converse welding method is adopted between adjacent layers in a multi-layer weld, or between adjacent beads in every layer. Moreover, the numerical simulation results of the double V-groove thick plate welding model show that the residual tensile stress appears on the weld and nearby, the residual compressive stress appears on the area far away from the weld and the peak value of tensile stress appears on the surface of the weld. Differences in the welding sequence influence the value and the distribution of the welding residual stress greatly, and a more suitable welding sequence can be deduced. The reliability of the numerical simulation results is proved by the experimental results.

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Erratum to “Effect of welding sequences on residual stresses” [Comput Struct 81 (2003) 273–86]

Cited by 4 publications

References 0 publications

Texture Analysis of Additively Manufactured Ti-6Al-4V Deposited Using Different Scanning Strategies

Texture Analysis of Additively Manufactured Ti-6Al-4V Deposited Using Different Scanning Strategies

Contemporary approaches to reducing weld induced residual stress

Influence of a welding sequence on the welding residual stress of a thick plate

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