Theoretical and experimental analysis of thermo-mechanical phenomena during electron beam welding process

Lacki, P.; Adamus, K.; Wieczorek, P.

doi:10.1016/j.commatsci.2014.01.027

Cited by 24 publications

(10 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Deng et al [4] computed the welded stress in lowcarbon-alloyed steel by taking the effect of the solid-state phase transformations into account. Lacki et al [5] used FEM and experimental method to analyze the influence of parameters on geometry of fusion zone and distribution of residual stresses in EBW of high-strength steel, and the calculated residual stresses were compared with X-ray diffraction measurement results. Liu et al [6] used a three-dimensional (3D) thermal elastic-plastic finite element model to predict welded residual stresses induced by full-penetration laser welding of Ti-6Al-4V alloy (4 mm thick), and residual stress measurements by hole-drilling method were also performed to validate the simulated results.…”

Section: Introductionmentioning

confidence: 99%

Using Finite Element and Contour Method to Evaluate Residual Stress in Thick Ti-6Al-4V Alloy Welded by Electron Beam Welding

Xie

Zhao

et al. 2015

Acta Metall. Sin. (Engl. Lett.)

View full text Add to dashboard Cite

This work was to reveal the residual stress profile in electron beam welded Ti-6Al-4V alloy plates (50 mm thick) by using finite element and contour measurement methods. A three-dimensional finite element model of 50-mmthick titanium component was proposed, in which a column-cone combined heat source model was used to simulate the temperature field and a thermo-elastic-plastic model to analyze residual stress in a weld joint based on ABAQUS software. Considering the uncertainty of welding simulation, the computation was calibrated by experimental data of contour measurement method. Both test and simulated results show that residual stresses on the surface and inside the weld zone are significantly different and present a narrow and large gradient feature in the weld joint. The peak tensile stress exceeds the yield strength of base materials inside weld, which are distinctly different from residual stress of the thin Ti-6Al-4V alloy plates presented in references before.

show abstract

Section: Introductionmentioning

confidence: 99%

Using Finite Element and Contour Method to Evaluate Residual Stress in Thick Ti-6Al-4V Alloy Welded by Electron Beam Welding

Xie

Zhao

et al. 2015

Acta Metall. Sin. (Engl. Lett.)

View full text Add to dashboard Cite

show abstract

“…They also found good consistency with empirical data. In a more recent investigation, Laki et al [21], from a series of 49 weld experiments, created a Partial Least Square model of the FZ and subsequently defined the heat source utilizing mesh segments and constant power density on each segment. The phenomenological approach has been used by Palmer et al [22] when they simulated the EBW of 304L stainless steel.…”

Section: Introductionmentioning

confidence: 99%

A metallurgical and thermal analysis of Inconel 625 electron-beam welded joints

Romanin

Ferro²,

Fabrizi³

et al. 2019

Frattura Ed Integrità Strutturale

View full text Add to dashboard Cite

Inconel 625 is a nickel-based superalloy that finds application in many industrial sectors thanks to its high strength, excellent fabricability, and outstanding corrosion resistance. It is characterized by a good weldability and often used in the as-welded conditions. In the following, a metallurgical and thermal analysis of Inconel 625 Electron-Beam welded joints is described. The thermal analysis was supported by a numerical model that uses a superimposition of a spherical and a conical shape heat source with Gaussian power density distribution in order to reproduce the nail-shape of the fusion zone. The heat source parameters were calibrated by using experimental data coming from metallurgical observations and temperature measurements. Numerical and experimental results were found in good agreement.

show abstract

“…In order to improve the drawability of titanium sheets, superplastic forming is applied [13]. New welding technologies, such as electron and laser beam welding [14][15][16][17] or friction stir welding [18][19][20] allow for the development of new aviation designs as well as modification in existing ones and therefore also contribute to weight reduction. Current design criteria are very complicated, hence all the improvements would not be possible if not for new computation methods, advances in modelling and simulation both for material and process design.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of forming titanium drawn part

Adamus

Lacki

2015

Meccanica

Self Cite

View full text Add to dashboard Cite

Structure weight is a priority issue in the transport industry, especially in aviation, therefore the demand for drawn parts made of titanium has grown steadily. Titanium in comparison to steel and aluminium has a much more beneficial specific strength so it is used where high mechanical strength and low construction weight are especially essential. In view of its high melting temperature, titanium is also used for aircraft fire walls. Although titanium has excellent properties such as high strength, low weight and good corrosion resistance, it is very difficult in production and processing. There are many technological problems that have to be overcome in forming titanium sheets. Titanium, especially titanium alloy sheets have poor drawability, high springback and low tribological properties. In the paper, the numerical analysis of forming a titanium panel made of commercially pure Gr 2 titanium is presented. The numerical simulation has been performed using the PamStamp program, dedicated to sheet-metal forming, based on the finite element method. In addition to the stress and strain distribution being analysed, the influence of the holding-down force and frictional conditions on the forming process are examined. The quality of the obtained titanium drawn-part is assessed basing on the correctness of its shape and dimensions with the reference ones, as well as on material thinning.

show abstract

Theoretical and experimental analysis of thermo-mechanical phenomena during electron beam welding process

Cited by 24 publications

References 25 publications

Using Finite Element and Contour Method to Evaluate Residual Stress in Thick Ti-6Al-4V Alloy Welded by Electron Beam Welding

Using Finite Element and Contour Method to Evaluate Residual Stress in Thick Ti-6Al-4V Alloy Welded by Electron Beam Welding

A metallurgical and thermal analysis of Inconel 625 electron-beam welded joints

Numerical simulation of forming titanium drawn part

Contact Info

Product

Resources

About